Scottish Rock Garden Club Forum

Cultivation => Cultivation Problems => Topic started by: Great Moravian on February 11, 2011, 11:46:24 AM

Title: Trichoderma (& treatment of Botrytis galanthina)
Post by: Great Moravian on February 11, 2011, 11:46:24 AM
Common snowdrops are self-seeding in my two gardens for decades.
Three years ago, Botrytis galanthina appeared in one and
substantially reduced the stock, in particular of Galanthus elwesii.
Now it appeared in the other garden, again on Galanthus elwesii
and my hybrids. In the books, I found advice to remove the plants
and not cultivate in surroundings. A better advice would be welcome.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 11, 2011, 12:14:49 PM
I am fortunate enough to have been spared botrytis so far.  The advice to remove the plants and not cultivate in the surrounding area has got to be good advice which would apply to any form of infection on any plant.  But if you want to try to cure the affected plants then you have to try to remove them into "quarantine" and you may or may not have somewhere to do this.  And there is no point in quarantining the affected plants unless you have a form of treatment.  In the UK access to fungicides is very limited but maybe somebody else knows of a fungicide you can use that is actually obtainable?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 12, 2011, 10:57:33 PM
I don't have this problem but as always, prevention is better than cure and to that end may I suggest the application to the snowdrop areas, of the fungus Trichoderma. This genus has at least 200 species so far described and many are native to New Zealand where work has been done to make products containing the fungus, for various applications. As a granular product or as a water-on product, it totally controls botrytis, phytophthora, assorted damping off fungi, clematis wilt etc. It works by colonising very quickly to the extent that other, harmful fungi simply don't have the room to establish. It is also a parasite on some phytophthora species. As a dowl-shaped plug, it can be inserted into the trunk of a tree such as maple or prunus species and it will totally cure silverleaf (normally a fatal disease), over a period of two years, leaving a healthy tree.

While it started here, I have no doubt it is available through the hort world now and in my estimation is the best thing since - or even before - sliced bread. I use it in one way or another, weekly at least, whether sowing seed, planting out lettuce seedlings, taking cuttings - whatever. The only restriction on its usefulness is that it needs a relatively high percentage of humus matter to be effective, so no use in, say, a tray of cuttings in sand or grit. I would expect that if an area of snowdrops in grass or woodland or pots were to be treated with granules, there would be no problem with botrytis arising. It is also a great root booster and I've been using it very succussfully (granules) to establish tiny seedlings in troughs, the roots penetrating between crevices quickly and deeply so that the little plants are suffering no setbacks even though they are much smaller than I would normally dare plant out, especially in the middle of a NZ summer.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: KentGardener on February 13, 2011, 03:21:34 AM
Very interesting Lesley  -  I've not heard of this fungus before but will get googling.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 13, 2011, 08:22:28 PM
I'm sure you'll find it John, probably under different brand names in different countries.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 14, 2011, 06:57:33 AM
Would this be it, Lesley?

http://www.growell.co.uk/p/0972/Trichoderma-Powder-Tri-003.html
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 14, 2011, 11:41:04 AM
Would this be it, Lesley?

http://www.growell.co.uk/p/0972/Trichoderma-Powder-Tri-003.html
Goodness me... not cheap is it?  Though I see that 10gms should treat 300 pots  so it's not as bad as first glance suggests!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 14, 2011, 01:08:24 PM
Given the cost of some of the rarer snowdrops, if it works it is very cheap indeed!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: art600 on February 14, 2011, 01:10:01 PM
Given the cost of some of the rarer snowdrops, if it works it is very cheap indeed!

I agree and have ordered some on EBay - cheaper postage than the site Alan suggested.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 14, 2011, 02:43:18 PM
I wonder if it would also be effective against Stagonospora curtisii?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: wolfgang vorig on February 14, 2011, 03:40:23 PM
a good medium  to Botrytis fungus is Pilzfrei SAPROL . (price about 12 €)
Galanthus pour precaution in the autumn already. The same is repeated in the spring.


Pilzfrei SAPROL  from Callaflor
Online - Shop für Pflanzen   www.pflanzotheke.de

kind regards,             Wolfgang
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Hans J on February 14, 2011, 04:31:03 PM
I can also suggest this fungicid SAPROL -the active is also a kind of fungus : Azoxystrobin
This is not danger for humans - only for fungi
For professional gardeners is also possibly to use ORTIVA
Friend of me who works in botanical gardens use it with great succsess

Hans
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 14, 2011, 09:13:55 PM
Yes Alan, that's it. I've not seen it in a powder form, but as I said, it seems to have been developed for many different situations. We can easily get the granules (almost like fine ground bran such as would be used to make bran biscuits or muffins), a water on or as a dowl-like plug for trees. (You obviously have to drill the hole for it.) I use the granules most and while it says 1 tspful for each lettuce say, I never use more than a small pinch which is still fully effective so it goes a long way. We can buy it in small foil packets or in much larger commercial quantities.

I love all kinds of Clematis and up to 10 years ago I lost 2 or 3 of every 5 I planted because I'm sure the commercial source had Clematis wilt in their nursery. Since I started using Trichoderma I've not lost even 1 though I've planted about 40. Also getting some to root easily from cuttings which I didn't before.

Because the Trichoderma is a growing organism, it stays in the soil and doesn't need repeat applications yearly or whenever.

I should think it would be well worth trying against the Stagonospora, as a treatment as well as as a prevention. As mentioned above, it cures silverleaf in trees over a couple of years.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Sean Fox on February 14, 2011, 10:39:56 PM
As someone who grows a lot of Clematis it's good to know about it's effectiveness against wilt. Do you use it purely as a precautionary measure on your clematis Lesley or do you use it with good effect if wilt affects one of your vines?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Mavers on February 15, 2011, 09:30:23 AM
Lesley I only seem to be able to find Trichoderma in powder form in the UK, I believe granules would be more useful.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 15, 2011, 09:52:24 AM
You might be able to wet the powder and water it on, say onto planted out Galanthus.

Of the affected clematis early on, they died and that was that, and since using the Trichoderma none has been affected so not as a treatment as there's been nothing to treat. Having said that, since so many died BEFORE the Trichoderma and since I still use the same source (there was only the one specialist source in NZ for a long time, a couple more now) it's reasonable to suppose that new plants or some of them had the wilt fungus present, and it hasn't appeared, so if it was there, presumably it has been treated by the application of the granules into the planting hole. The silverleaf thing suggests that it is a treatment as well as a preventative.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Michael J Campbell on February 15, 2011, 10:10:17 AM
I tried to place an order with this company http://www.growell.co.uk/p/0972/Trichoderma-Powder-Tri-003.html

No way no how. One has to register to pay by credit card and it won't let me register because I don't have a postcode. I usually just enter a few 00 and it works but not this time.

What sort or genius sets up these web sites.?  >:( >:( >:(
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 15, 2011, 11:09:13 AM
I tried to place an order with this company http://www.growell.co.uk/p/0972/Trichoderma-Powder-Tri-003.html

No way no how. One has to register to pay by credit card and it won't let me register because I don't have a postcode. I usually just enter a few 00 and it works but not this time.

What sort or genius sets up these web sites.?  >:( >:( >:(

 Michael, looking at their delivery charges, perhaps you've had a lucky escape!


Standard postage
(per order):
£5.95
Surcharge on heavy items marked with H :
£5.00
Surcharge for Scottish Islands, Northern Ireland & Isle of Man:
£20.00
Surcharge for Eire:
£25.00      :o :o :o
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: chasw on February 15, 2011, 11:14:47 AM
Michael try this link to  ebay ,postage is a lot cheaper £1.49
http://cgi.ebay.co.uk/Canna-Aktrivator-TRICHODERMA-10g-/320651715240?pt=UK_HomeGarden_Garden_PlantsSeedsBulbs_JN&hash=item4aa854e2a8 (http://cgi.ebay.co.uk/Canna-Aktrivator-TRICHODERMA-10g-/320651715240?pt=UK_HomeGarden_Garden_PlantsSeedsBulbs_JN&hash=item4aa854e2a8)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Olga Bondareva on February 15, 2011, 02:35:11 PM
Lesley it's very interesting you are telling about Trichoderma. Here we have Trichoderma lignorum in granules. I've always thought it is something like placebo and never used it. I also have some wilt problems on clematis. And certainly I'll try Trichoderma on them next season.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Michael J Campbell on February 15, 2011, 02:37:57 PM
Thanks Chas.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 15, 2011, 07:51:09 PM
Olga, I use it on many different things now, especially anything tiny I want to establish quickly in our (usually) hot summer. I don't yet sprinkle it on my breakfast cereal but maybe it won't be long. ;D

Just in case anyone wondered, I DON'T have any financial interest in the products. ;D
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Great Moravian on February 16, 2011, 12:48:47 PM
Lesley,
I tried to identify a supplier of Trichoderma and browsed Czech web pages.
The results are surprising for me. It is known solely to illegal growers of
marihuana who use it in the pot culture of Cannabis plants.
Therefore the price is astronomic, as stated above.
You should write a detailed essay on its benefits in rock gardening in
a serious European journal in order to get it in normal distribution.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 16, 2011, 03:49:14 PM
Trichoderma .... is known solely to illegal growers of
marihuana who use it in the pot culture of Cannabis plants.

Aha.  I wondered why it was only on sale here from hydroponics specialists!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 16, 2011, 09:46:00 PM
Maybe Google NZ pages. There's a lot about how it is manufactured, uses and the assorted research done. I have a private email from a Forumist which I'll answer in a few minutes but will say the same thing here as to him, it needs to be used only once. I use granules when I pot anything at all tricky or anything which is prone to fungus attach and that once is all it needs. There's no need for an annual top up. For the same reason I think it would be worthwhile to recycle any mixture from old pots where it has been used as the fungus is still there and active, and would be beneficial in, say one's vegetable garden or recycled onto a woodland bed.

I sometimes still use the water on version but mostly not nowadays with nursery plants unless, again, they are something on the tricky side. The reason for this is that after the watering, plants in 90mm plastic pots grew so well and so quickly that they needed repotting within 3 months whereas they were actually stock for the full year ahead.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: loes on February 16, 2011, 10:27:58 PM
I use a similar product of 'friendly' fungus named Rootgrow
just bought it a few weeks ago and used it on newly planted/divided snowdrops
I`m gonna use it with all the planting this spring
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 16, 2011, 11:30:20 PM
Loes, if you read the fine print on the packet you will very likely find the active ingredient is Trichoderma fungus. It is available here in various Brand names, including Rootmate and Plantmate.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Hillview croconut on February 17, 2011, 02:33:28 AM
Hi,

At the risk of boring everyone with science. Here are two abstracts of studies into the use of two different species of trichoderma in inhibiting Fusarium oxysporum in commercial onion crops.

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6T5T-4P9036G-2&_user=10&_coverDate=05%2F31%2F2008&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_searchStrId=1644752059&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=ed115efe9b9863671c24f4c3e1712aba&searchtype=a

http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS.2004.88.3.287

It would appear that it has significant efficacy. I guess the question is: Are their limiting factors, i.e. soil temperature, re-inocculations, colonization pre-requisites, etc.

Marcus
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Hillview croconut on February 17, 2011, 02:45:54 AM
Postscript: The second study looked at white onion rot (sclerotinium). It would appear disease supression can also result from the production of anti-fungal compounds.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Olga Bondareva on February 17, 2011, 05:53:20 AM
I guess the question is: Are their limiting factors, i.e. soil temperature, re-inocculations, colonization pre-requisites, etc.

Marcus, as I know it works under 20C.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 17, 2011, 06:51:03 AM
I now have a tiny 10g container of "Canna Aktrivator" water-soluble Trichoderma which is supposed to be diluted 1g to 1 litre of water.  This is supposed to be enough to treat "30 plants", which would work out at 33 ml per plant.  1l is really too small a volume to be applied with a watering can so I am wondering what the best method of application is - particularly when it comes to my snowdrops in 3l pots where I imagine 33 ml per pot is more than is required. 
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Great Moravian on February 17, 2011, 01:39:58 PM
An interesting link for British gardeners. Plantmate source.
http://www.vinevax.com/plantmate.html
Happy Trichoderma gardening.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 17, 2011, 02:04:19 PM
Now all we need is for somebody to develop "Snowdropmate".
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Darren on February 17, 2011, 03:17:14 PM
This is a really interesting topic which I feel has wider applications than just for Galanthus and I wonder if it may be worth moving it to the cultivation problems section?

Alan - something like a turkey baster (basically a big pipette) might be a useful way of applying the right quantity to your pots.

Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: loes on February 17, 2011, 03:47:48 PM
Lesley,
it doesn`t say Trichoderma on the packet but ...with Mycorrhiza on clay and zeoliet particles

you can`t dilute this,just add to the roots.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 17, 2011, 09:36:27 PM
Thanks Loes. I guess the one Alan has found is a water-on.With that, I'd be inclined to use a watering can (in a confined tray maybe so that the spillovers can be soaked up) as a drenching of the pots would be appropriate.

Marcus regarding restricuions, the only one I've been able to find in the assorted literature is the requirement for a humus content of at least 25% for effective use.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 17, 2011, 09:37:44 PM
Now all we need is for somebody to develop "Snowdropmate".

What's a snowdrop, Mate? Sorry, I'm pretending to be Australian.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 17, 2011, 10:45:59 PM
Sorry, I'm pretending to be Australian.

I don't think you should go down that road as I have a suspicion some of the genuine Trichoderma products do not translate well into Australian.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on February 18, 2011, 08:22:09 AM
Is it safe to assume that if you use Trichoderma, that you shouldn't use a fungicide as well? That's a bit of a leap of faith.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 18, 2011, 09:13:10 AM
It's not a leap of faith for the amateur as they don't have access to these fungicides anyway.  I'm hoping Trichoderma will give me an advantage over those people who take an agricultural approach to snowdrops and routinely treat with fungicides.   
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: RichardW on February 18, 2011, 09:44:45 AM
I now have a tiny 10g container of "Canna Aktrivator" water-soluble Trichoderma which is supposed to be diluted 1g to 1 litre of water.  This is supposed to be enough to treat "30 plants", which would work out at 33 ml per plant.  1l is really too small a volume to be applied with a watering can so I am wondering what the best method of application is - particularly when it comes to my snowdrops in 3l pots where I imagine 33 ml per pot is more than is required.  

A large syringe (20ml) works well to apply a very small amount to a pot, I can get these from the farm & use them myself, it's not a quick method due to what ever you're using having to be applied slowly, have some spares if you want to pick one up on sunday.  
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Brian Ellis on February 18, 2011, 11:08:15 AM
Quote
A large syringe (20ml) works well to apply a very small amount to a pot

Well blow me down, I came to the same conclusion myself and ordered some from ebay yesterday along with some to measure 2ml  8)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: chasw on February 18, 2011, 11:10:31 AM
Brian,it may be worth mentioning this to Jane Ann,will you be at the CGS day tomorrow?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 18, 2011, 01:05:03 PM
A large syringe (20ml) works well to apply a very small amount to a pot

Thanks, I came to the same conclusion myself and I already had a few 10ml syringes around because I had ordered them to help me dilute my Citrox disinfectant concentrate.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 18, 2011, 01:23:23 PM
Folks, have moved this topic to the general Cultivation problems area, because of likely broader interest. :)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 18, 2011, 01:33:06 PM
Maggi, maybe you should also change the title because this has become a discussion on the use of Trichoderma?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 18, 2011, 01:41:28 PM
Maggi, maybe you should also change the title because this has become a discussion on the use of Trichoderma?
Good thinking!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 18, 2011, 01:42:54 PM
Renaming this thread to: Trichoderma  (& treatment of Botrytis galanthina)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Great Moravian on February 18, 2011, 03:16:34 PM
You can try the following for interesting general information if it works for you
http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2010.03614.x/pdf
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Heinie on February 18, 2011, 06:14:32 PM
I have been using the fungi spores Trichoderma harzianum for the past 5 plus years with huge success. This product is for the control of many root diseases and for plant growth stimulation. It controls diseases like Botrytis, Fusarium, Pythium etc. I buy this powdered product in a 450 gram pack for R74.00 in Cape Town. I grow Clivias which are prone to root rot if the roots are too wet and Trichoderma harzianum has looked after this part of the plants for me. I add the product on a monthly basis to the fertilizer when I feed the plants. I wrote an article on another forum about three years ago and have copied the article below for those who are interested. This was the complete article at the time.

On the 24 November 2006 I noticed a clivia plant that fell over towards the side of the pot amongst other clivias under large trees. A clivia plant that does not grow vertical anywhere in my yard or in the shade house is very easily noticed because I never tolerate a clivia plant to lean over towards a side because I simply do not like them growing horizontally and it looks untidy. I push them upright and support the plant at the base.

The plant and pot was removed from the others and was completely loose in the growing medium. I suspected Fusarium root rot but once the plant was removed from the pot the result was far worse than just root rot. There were 6 affected roots left and the bottom of the Pseudo stem was badly rotten away. I washed the soil off the plant in a corner of the yard on a sandy patch where no other growth of any kind is. I removed all the mushy roots and washed the plant in a SporeKill solution by brushing the stem with a old tooth brush. I then applied neat Bravo to the affected parts. The plant had 2 suckers with 4 and 6 leaves each. Their few roots were also starting to be affected by the Fusarium rot. There were so few roots that I decided to pot this plant into a 20cm pot which was much to big to accommodate the few roots of this mother plant with two suckers. The potting medium was fairly dry. I then watered the plant with Root Plus by BCP which consists of spores of carefully selected strains of the natural soil-borne fungi Trichoderma harzianum and Paecilomyces lilacinus and once a month thereafter. I also watered the plant with Microbial Biostart on a weekly basis. I continued this treatment for 3 months and then only watered the plant every 2 weeks because I mix a Haifa controlled release fertilizer into my growing medium.

I noticed that the roots were growing over the top of the 20cm pot yesterday. When I removed the plant peg and noticed my note about the Fusarium treatment. I looked up the plant stats on my database where I collected the history of 24 November 2006. I removed the plant from the pot and there was hardly a cup full of growing medium left in the pot. I washed the masses of healthy white roots and left it on the lawn in the rain overnight. I re-potted the plant into a 30cm pot because I did not remove the original 2 suckers which now have 8 and 9 leaves each. There are another 3 suckers appearing as well. Here is a photo of what the Pseudo stem looks like today with the previous damage clearly visible.

(http://i119.photobucket.com/albums/o149/loevenstein/IMG_1013.jpg)

This is the root ball today.

(http://i119.photobucket.com/albums/o149/loevenstein/IMG_1016.jpg)

This photo compares the 20cm pot from which the plant was removed yesterday and the re-potted plant in a 30cm pot to have sufficient space for the new suckers as well for the next 2 or 3 years and will look forward to experience a specimen plant pot with at least 3 umbels next year and perhaps 7 umbels in 2 years time.

(http://i119.photobucket.com/albums/o149/loevenstein/IMG_1020.jpg)

Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: majallison on February 18, 2011, 09:17:27 PM
I'm wondering if Trichoderma would be helpful with chipping or twinscaling bulbs ~ I'd really like to avoid using conventional fungicides. Does anyone have experience of using Trichoderma in this kind of propagation?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 19, 2011, 04:15:00 AM
Can't help with that one but well worth a go I should imagine, even on a trial-on-a-few basis at first.

Anne, what is hard for some people to get their heads around is that Trichoderma IS a fungus and not a fungicide. It would therefore seem likely that a fungicide should be avoided. It may be a leap of faith but in my case, I rarely use/used a fungicide anyway, it being one of those "when I get around to it" situations. I have not ever seen any sign - and actively looking - of any fungus disease or infestation, on any plant I've treated or planted with Trichoderma, including seedlings which for years have previously damped off regularly.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on February 19, 2011, 10:39:41 AM
Thanks, Lesley. That was the conclusion I'd come to. I was also wondering what Malcolm said above, and this was the leap of faith I was considering.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 19, 2011, 10:21:57 PM
Along similar lines, I knew a gardener (late) who sprayed his Pinguiculas with insecticide and was upset when they died. He couldn't see that an insect-digesting plant wouldn't welcome its food source being killed and chemically at that.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Heinie on February 20, 2011, 08:37:28 AM
Malcolm,
You can use Trichoderma with splitting of bulbs by dipping the pieces into Trichoderma for a few seconds. I split one of my Hippeastrum bulbs into 4 pieces last week as an experiment. This is a first time for me and I left the pieces for about 5 minutes in the Trichoderma solution while the pots and growing medium was prepared. I planted the 4 pieces in one pot and watered the medium with Trichoderma as well and placed a clear plastic over the pot. There is no sign of rotting material to be seen yet.

I found the mother bulb of one of my Ledeboria bulbs rotten a few months ago. There was only a very tiny piece of the basal plate left. I cleaned the basal plate and surroundings with a tooth brush and water. I took a chance to save the bulb although there were many smaller bulbs in the pot that grew on the mother bulb. I placed the bulb in growing medium with a lot of sand and watered the bulb with a Trichoderma solution every 6 or 7 days. The bulb continued to make new leaves and after two months I removed the bulb and it had a huge root ball from that tiny piece of basal plate. Pardon the long reply but it is important that you know how good a product this is.

Lesley,
There are certain fungicides and insecticides that work well with Trichoderma. I will try to find my list but two of the products I know works with Trichoderma because I use it is Confidor, Kohinor and Merit (Imidacloprid) and Bravo (Chlorothalonil). The only requirement is that the pesticide and fungicide be applied one week apart of Trichoderma.

Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on February 20, 2011, 10:00:04 AM
I think I shall have to give this a try; a controlled experiment with something I have a lot of. Also might try it for chipping a particular bulb which fails every time despite the fungicide I use.  Thank you to everybody for your experiences.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on February 20, 2011, 10:12:54 AM
I just ordered 10g from ebay, then realised I could have had 250g for only 5x more money!
http://cgi.ebay.co.uk/CANNA-Actrivator-250g-HYDROPONIC-TRICHODERMA-/370432352314?pt=UK_HomeGarden_Garden_PlantsSeedsBulbs_JN&hash=item563f7d203a#ht_500wt_922
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Heinie on February 20, 2011, 10:45:21 AM
Anne,
That Ebay item is hugely over priced if I look at what we pay here for a 450 gram pack at R74 which is just over £6 for double the amount.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on February 20, 2011, 12:05:03 PM
Even worse considering it is £12 for 10g!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: majallison on February 20, 2011, 06:59:54 PM
Well, I've paid my £12 & as I'm not planning on a commercial operation using Trichoderma, that should be ok in the first instance.  I'm going to have a go twinscaling Nerines & will let y'all know how I get on.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 21, 2011, 08:48:15 AM
Can anybody comment about this product, "Rootgrow"? http://www.rootgrow.co.uk/rootgrow_information.php  I presume this is not the same thing as Trichoderma but could you use both?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 21, 2011, 09:19:50 AM
Nothing I have seen about "Rootgrow" states any specific ingredient, though it does claim to have  "all UK origin species of fungi that are proven to benefit plants under UK soil conditions and climate."

My presumption is that one would use  either the Trichoderma product, or the Rootgrow, using both would be unnecessarily duplicating a treatment.
I have emailed "Rootgrow" to ask a few questions so I'll report back when I hear.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Great Moravian on February 21, 2011, 11:32:06 AM
I browsed German pages concerning Trichoderma. Useful information about its garden use
including acceptable fungicides can be found at
http://www.mykomax.de/Antagonisten.htm
Trichoderma in EU
BINAB TF.WP
Promot WP
Trianum
Trichostar
Trichodex
Vitalin T50 = Trichosan
Trichomax *
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Gerry Webster on February 21, 2011, 11:33:39 AM
Has anyone tried 'Viresco'?:

http://www.viresco-uk.com/information/about_viresco.asp

It is effective against fungal problems with pot-grown frits, though it's about 10 years since I last had cause to use it.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Heinie on February 21, 2011, 12:02:56 PM
Alan,

I checked the website and Rootgrow is a Mycorrhizal fungi which is something different to Trichoderma harzianum. I tried the Mycorrhizal fungi for 14 months on 10 experimental Clivia seedlings. Five seedlings were planted with Mycorrhiza mixed in the growing medium and five seedlings were planted without Mycorrhiza. After 14 months I took all the seedlings out of their pots and I could not notice any difference in root growth or leaf growth between the 10 plants.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 21, 2011, 12:59:42 PM
Interesting to hear your lack of success with the mycoorhizal mix, Heinie.

There are those inthe UK singing the praises of these perparations I know..... and you are right, the Trichoderma is different, being a mycopariste: a fungi which parasitises  other fungi - so perhaps that is more useful in certain applications but could still be used in conjuntion with the mycorrhizal mix.

We need forumists trialling these things  ::)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 21, 2011, 06:33:13 PM
Trialling is made more difficult by the lack of a standard product available worldwide.  I think there are quite a few forumists risking our precious snowdrops with the version of Trichoderma that is available in the UK, which is something called "Canna Aktrivator".  At www.canna.com Canna describe themselves thus: "We are the Dutch experts and internationally recognised world wide leader in intelligent plant technologies for cultivating your favourite plants in cocoponics, hydroponics and soil."  We don't know if this is the same formulation as the New Zealand product, "Rootmate" or the product sold in South Africa.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Heinie on February 21, 2011, 07:14:42 PM
Interesting thoughts Allen. The Trichoderma harzianum I use is a product cultivated in South Africa for our conditions as they would say.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 21, 2011, 09:34:15 PM
My original purchase of Trichoderma was a 10kg bag of granules, a commercial quantity and was simply labelled as Trichoderma. Since then it has come in various small home gardener guises, including Root Grow and more recently Rootmate and Plantmate. Of these, all have talked about Trichoderma by name, in the small print on the back of the packet.  

I'm sure there will be hundreds or maybe thousands of Trichoderma species around the world. When the technology was first being developed in New Zealand, there were some 200 species described, all native to New Zealand being used. It would be inconceivable that we had the lot. So probably many countries now have their particular versions of the original products. I'm not in a position to discuss those from other countries as I've never tried them. What I know for sure is that any plant, seed or other pot, trough or small garden area on/in which I've used Trichoderma, has flourished and shown no sign of any fungus condition which has needed any other treatment.

As the video ln Alan's link said, their fungus, and certainly my Trichoderma works for the life of the plant. It does not need yearly or otherwise repeated applications. In the video the product was sprinkled extensively into a planting hole. I don't use as much as that, except perhaps I might on a large plant such as a rose bush if I were planting one and my two recently acquired very large tree paeonies. For plants going into my troughs I sprinkle a mere pinch of granules around the root ball but over the planting hole so that any that fall off go into the hole, then place the plant and fill the hole as normally.

As I said above, I no longer use a water on version as it worked TOO well and there would be wastage of the solution which didn't fall on the plants/pots but in between or around them.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on February 21, 2011, 09:40:54 PM
Trichoderma is known to be parasitic on at least some Phytophthora species. I often think that if it had been around and usable at the time, there need never have been an Irish potato famine, and the course of the world's history would have been quite different.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Hillview croconut on February 21, 2011, 10:13:43 PM
There's a thesis there ;D. M
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Heinie on February 22, 2011, 11:04:34 AM
Lesley,

It is a specific strain of Trichoderma for various root diseases and that is Trichoderma harzianum which is cultivated locally. The 10kg bag of Trichoderma granules you refer to is back in the early days when it was originally released. When Trichoderma was released here in smaller quantities to be used for the hobbyist gardeners a few years ago we could buy it in 5kg bags of pink granules. I was the first person in our Clivia club to purchase a bag to experiment with. I went crazy about this good stuff from all the commercial references and followed the instructions applicable to domestic gardens. I first tackled about 50 pots planted with seedling Clivias and then continued with the mature plants. I was advised to remove about 40 to 50mm of the growing medium around the plant stem, place a teaspoon of granules around the stem and close up again and water the plant. I did this with a number of seedlings and mature plants over about 4 days.

After about one week I was devastated one morning to find a huge number of my seedlings with broken leaves and some small ones uprooted in my large shade house. A few mature plant pots were also disturbed with growing medium all over the show. I immediately blamed the Indian Minah birds we have around in summer that may have found a way into the shade house. I replanted the seedlings that I could save and the next morning I found the same thing. This procedure continued for a few days until I noticed a rat running across the shade house floor. I immediately changed my mind to who the culprits were and accepted that the rats were my problem digging into the medium after the granules. I called the company I purchased the product from and there I found the answer. The Trichoderma was attached to Sago granules as the host to enable spreading easier for commercial growers and farmers. The rats were after the sago. I was very lucky that they told me to return the bag and refunded me.

I was then offered the opportunity to purchase the Thrichoderma harzianum in a neat powder form in a 450 gram packet. I mix one teaspoon of the product with 10 liters water as per instruction and it has been very successful. The sago pellet form is still available.

Trichoderma spores can live for a long time and multiply as well if it is in the correct environment. The soil should never dry out because the spores will then die too because they need damp conditions to live. With the Clivia and bulbs I grow the product must be replenished monthly because there are a number of bulbs where the medium has to dry before watering again. Clivias also go very dry before watering again. The Trichoderma spores cannot survive in dry conditions.

After about 5 years I am still very happy with this product and can recommend it for any root problems.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on February 22, 2011, 11:04:55 AM
A couple of us wrote to Rootgrow and got this helpful reply today...

Dear Ian and Alan,

You both enquired about rootgrow and Trichoderma on the same day, which was very unusual for us so i hope you don't mind me combining your email response.

rootgrow contains UK origin mycorrhizal fungi, a combination of arbsucular mycorrhizal fungi and ectomycorrhizal fungi, it does not contain Trichoderma.

It is likely the two products are compatible, however i need to clarify that point.

With a Trichoderma product it maybe easier to think of it as a foliar fungicide, i.e. you spray it onto leaves and the soil surface.

Trichoderma is a myco-parasite, a parasite of fungi and has been known to help control damping off or pythium in seedlings and botrytis (Gray Mould) in some crops.

Mycorrhizal fungi exhibit a symbiotic relationship with their host plant, they exist attached to plant roots living underground where they source water and nutrients and feed them to the host plant.

As a rule of thumb, use Mycorrhiza when planting into soil on the plant roots on mature plants that have left propagation, use Trichoderma in container growing, including seed growing and propagation of young plants. You can try introducing Mycorrhiza in propagation but due to artificial substrates and restricted root development the benefits are usually small, mycorrhiza really benefit plants when planted into soil.

If you were to inoculate young plants with mycorrhiza and then do a deep soil drench of Trichoderma (not just a light foliar spray but soaking the compost, which would be very expensive) then there maybe some antagonism between Trichoderma and mycorrhiza i.e. the Trichoderma would start feeding off the Mycorrhiza.

I do know of some Dutch scientists that have however found no antagonism, in fact the two organisms work well together, that may have been down to a unique strain of Trichoderma. It is here that we are right on the edge of science and what we know, it will probably be a decade or so before we understand these interactions better. As far as I recall on my studies on Trichoderma we hadn't even properly identified Trichoderma to the Species level, they were known as Species Aggregates.

If you wish to try using the products in conjunction please follow the above advice, there should be no detrimental effects to the plants as the likely negative outcome would be the Trichoderma just consumes the Mycorrhiza, however initially and from a common sense point of view try it on a small number of low value plants and see how you get on.

Regards

Mark

--

Mark Mackie
Sales & Marketing Director

M 07834 515 313

PlantWorks UK
1-19 Innovation Buildings
Kent Science Park
Sittingbourne
Kent
ME9 8HL
T 01795 411527
F 01795 411529
E info@plantworksuk.co.uk
www.friendlyfungi.co.uk



Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Great Moravian on February 22, 2011, 03:24:48 PM
BINAB TF.WP http://www.algonet.se/~binab/english/tf.htm
Promot WP http://www.sw-duenger.de/en/produkte/staerkungsmittel/spezial-duenger_promt_wp.html
Trianum http://www.trianum.com/nl/news.html
Trichostar http://www.rasenpartner.de/?Aktuelles
Trichodex http://www.epa.gov/oppbppd1/biopesticides/ingredients/tech_docs/tech_119200.htm
Vitalin T50 = Trichosan http://www.nuetzlinge-shop.de/oxid.php/sid/54ba67086600cd82b19f91c2e4d5214a/cl/details/anid/f08481883207e8dc4.89459807/Trichosan-1.0-kg-Dose//listtype/search/searchparam/trichosan
Trichomax * http://biomanagement.de/download/InfoTrichoMax.DOC
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on March 06, 2011, 09:02:56 AM
I have been looking to see if I can find any of the products listed above for sale in the UK.  My one success so far has been with "Trianum", which appears to be on sale here: http://www.jfcmonro.co.uk/search.asp?types=yes&type=Biological+Control+%3E+Sprays
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: mark smyth on July 17, 2011, 09:53:53 PM
I missed all of this until I was speaking to Anne W today. What a fascinating topic.

What has happened in the last 4 months? Has anyone used it on twinscales?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on July 17, 2011, 10:27:21 PM
It wasn't until now Maggi that I read the response to your and Alan's query. It is all very interesting. from the information I was given some years ago when Trichoderma products first appeared in NZ, only native species were involved, of which some 200 had been described. How many were involved in making the products I don't know.

In the meantime, I have sprinkled a little granular Trichoderma (Rootmate) in my seed compost this year and the results are almost embarrassing. I haven't lost a single seedling (at the germinating stage or after) and will have to throw out hundreds, or else populate the entire country with primulas, dianthus, campanulas and so many other things. Frits and Narcissus pots look as if I'm growing thick lawn. In the past I've had quite a problem with frit seedlings damping off about 3 or 4 weeks after germinating but that problem seems thoroughly solved.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 17, 2011, 11:00:58 PM
After I spoke to Mark, I have put together a small controlled experiment with some snowdrops. I have chipped:
1. Trym, which is extremely slow to make bulbils
2. Sophie North, which I also find difficult to get from chips
3. Wendy's Gold - some bulbs that had been badly mauled by the severe winter and were also showing staining which I took to be infection by stagonospora
4. Blonde Inge - as 3
I cleaned away dead tissue as usual then halved each bulb, putting the chips from each half into either a fungicide solution, or a suspension of trichoderma spores. Each set were then put into boxes with moist perlite and incubated at 21C.
I will let you know the results later in the year.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Brian Ellis on July 18, 2011, 09:47:42 AM
An interesting experiment Anne, I am sure we will all be most interested to know the outcome.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 18, 2011, 12:42:38 PM
Just realised that it's not a proper controlled expt with out a control- I didn't do a set with just plain water on its own.  ::)

Here's some info from the manufacturer of one brand, and a UK source:

See: http://www.koppert.com/diseases/overview/products/detail/trianum-p-2/

also:
http://www.jfcmonro.co.uk/search.asp?types=yes&type=Biological+Control+%3E+Sprays
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: majallison on July 18, 2011, 10:41:29 PM
I didn't make a proper control but I had some twinscales from Nerine 'Zeal Purplestripe' which were rotting after 7 or 8 weeks, so I immersed them in a Trichoderma solution which arrested the rot & I now have a couple of very tiny bulbs.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 20, 2011, 10:12:05 AM
That's good to hear. Does anybody know what is the shelf-life of this stuff? If I buy 5kg, how long will I have to use it before it becomes inactive?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on July 20, 2011, 11:11:52 AM
I think the shelf life of the granules is quite long, Anne. It can even last up to six months when mixed in a paste, I'm told.
 A chum who is ( vaguely!) into hydroponics gave me this link....
http://urbangardenmagazine.com/2011/02/trichoderma-in-hydroponic-systems/ which you may find of interest.
Contains some notes about possible interactions/conflicts with other fungi, e.g. mycorhizzal.... no conclusive evidence one way or the other, it appears.  
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 20, 2011, 01:07:41 PM
Thanks, Maggi. It's just that the supplier said the pack had a sell-by date of November 2011. I'd have to go a bit if I was to use that quantity in just 4 months.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Martin Baxendale on July 20, 2011, 05:40:01 PM
From what I've been reading, it seems that Trichoderma is active above 10c, so the time to apply it would be in mid to late Summer as rooting starts. It also appears not to be harmed by carbendazim, the fungicide that's most effective against stagonospora (but only available to commercial growers).  So I guess a commercial snowdrop grower could use Trichoderma alongside carbendazim (though the advice seems to be not to apply both at the same time): http://side-effects.koppert.nl/#
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Martin Baxendale on July 20, 2011, 05:48:48 PM
The shelf life is said to be four months if stored correctly (below 10c apparently, so I guess you keep it in the fridge, especially once the aluminium storage bag has been opened). I'd guess that kept in a fridge it might keep longer than four months as the low temperature should prevent spores germinating. Maybe you could get two years use out of a bag.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Martin Baxendale on July 20, 2011, 05:57:30 PM
Anne, were you thinking of using the granular compost additive? I was thinking about the liquid form for watering into pots and watering onto snowdrop growing areas in the garden. Might be handy to have both, but a tad expensive.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 20, 2011, 07:48:18 PM
I am acquiring both, to give me some choice. I've only just realised that I can't add it to my daff-potting compost because it would be some time after application before it was watered in the September monsoon, and it would have gone off in the warm compost by then. So it would have to be applied as the powder actually in the 'storm' water. Hope you're following this  ::)
It would be fine for galanthus/trilliums etc though, because they are watered straight away after potting.
I will have too much for my own use so will be prepared to share with others, if they will pay the extra postage as well as a proportion of the cost.
Here is a summary of the application rates, but you might like to check my maths...

Trianum application rates
[/b]
1. Application and dose of trianum P

Apply 1.5 grams of TRIANUM-P per m² of cultivated area (suspended in 2.5 - 5 litres of water) immediately after sowing or planting cuttings (non-rooted or rooted).
 
Cultivation in soil at high crop density, with little space between plants (vegetables, herbs, bulbs, ornamentals, perennials and arboriculture)
      Apply TRIANUM-P directly after planting, at a dose of 3.0 grams per m² of cultivated area (suspended in 10 litres of water).
      Apply TRIANUM-P at half dose (1.5 grams per m²) if plants were treated during the propagation stage.
      Repeat the treatment with TRIANUM-P every 10-12 weeks or after re-potting into larger containers, also using half the dose.
 
Cultivation in soil and substrate in rows, or at lower crop density, where plants are more widely spaced (vegetables, soft fruit, ornamentals, perennials and arboriculture)
      Apply TRIANUM-P directly after planting, at a dose of 30 grams per 1,000 pots (suspended in 100 litres of water).
      Apply TRIANUM-P at half dose (15 grams per 1,000 pots) if plants were treated during the propagation stage.
      Repeat the treatment with TRIANUM-P every 10-12 weeks or after re-potting into larger containers, also using half the dose.
30g per 1000 pots = 3 g per 100 pots (doesn't specify pot size) suspended in 10L of water.
3g of powder will treat 1m² of planting or 100 pots
1 x 500g pack = 166 doses of 3g     (5 lots of 33 doses)
 
2. Application and dose of trianum G
Mix TRIANUM-G mechanically with the growing medium, sowing or potting of plants. Dosage:
      750 g/m3 of growing medium at first application
      375 g/m3 growing medium at following applications (repotting)
Make sure that the material is evenly distributed through the growing medium.

1 bag of JI is 25L
I add same quantity of other stuff to give 50L
1m3 = 10x10x10L = 1000L = 20 x 50L
I need to add 750÷50g = 15g
15g of granules will treat 50L of compost

1 pack of 5000g = 330 doses of 15g (5 lots of 66 doses)

 
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 20, 2011, 07:49:46 PM
If anyone is interested in a share, please pm me (UK only)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Martin Baxendale on July 20, 2011, 08:51:18 PM
It sounds like the granular form would be okay in the dry/dryish compost for a few  months before watering: http://www.trianum.com/en/products/trianum-g.html

Look at the bottom of the page in the above link, under shelf life.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on July 20, 2011, 10:54:28 PM
I think the granule shelf life is quite long - sorry, that means nothing really - so long as the packet remains unopened and in any case, I'd use up whatever I had left after planned uses, on something else. For a home gardener, 5kg is an enormous amount but the sharing of a bag would be ideal. I think the commercial garden centre packets we get here are maybe 200gms. (too frosty this morning to go and look!)

It's always worth considering that manufacturer's who want to sell more, will understate a shelf life for their own ends. Certainly that's true of the rooting stuff I use, Liba 10,000 which the bottle says should be replaced every year. At one stage I used the same lot for 5 years and it was still entirely effective.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 21, 2011, 09:11:52 AM
Thanks, Martin. I don't think my potted daffs would get to more than 20C if I plunged them straight back into the sand. Lesley, thanks also, but it was the viability of an opened packet I was concerned about, if I was only using a small amount at a time over an extended period. I think you're right about them over exaggerating a shelf life, but I also don't want to be paying for it and going to the trouble of treating things if I've let it go off.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on July 21, 2011, 09:31:06 PM
I still think you'd be OK Anne. I've used the same small packet when planting out lettuce seedlings over two years and no sign of that beastly sclerowhatnot thing that attacks lettuces.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 21, 2011, 10:38:53 PM
SSHHH! Don't let my lettuces know there's something nasty they can catch as well!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on July 21, 2011, 10:43:20 PM
SSHHH! Don't let my lettuces know there's something nasty they can catch as well!
Do you need to worry? I've never thought that lettuces were very bright? :-X ???
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 21, 2011, 10:49:37 PM
My lettuces are very well brought up and rather sensitive. In fact they are liable to bolt at the slightest thing.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on July 21, 2011, 10:55:23 PM
I imagine your lettuces would be well brought up, Anne, I never thought otherwise... but hysteria is not necessarily a sign of intelligence, y'know!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 21, 2011, 10:58:03 PM
Isn't that what you get by drinking unpasteurised milk?
I'm definitely off to bed now...
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Martin Baxendale on July 21, 2011, 11:01:46 PM
I think, like Anne, I might go for both the liquid and the granular. I do have a lot of snowdrops to treat. In fact so many that I guess I might as well just treat the whole garden.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on July 22, 2011, 02:32:53 PM
All shares now spoken for - we'll let you know of our experiences with it.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on October 04, 2011, 02:32:59 PM
First results: Diseased bulbs chipped and treated either with trichoderma or fungicide. These are photos of the chips recently planted.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on November 27, 2011, 11:48:50 AM
Maggi,

Thanks to have reoriented me on this very interesting topic.
Please, continue to feel free doing so whenever necessary, you are most welcome.

Let me thank you factually by adding informative connection between messages that will clarify or answer one point concerning the combinatorial use of mycorrhizae and Trichoderma.

In your message referenced "Reply #72 on: February 22, 2011, 11:04:55 AM" under this thread, Mark Mackie wrote "If you were to inoculate young plants with mycorrhiza and then do a deep soil drench of Trichoderma (not just a light foliar spray but soaking the compost, which would be very expensive) then there maybe some antagonism between Trichoderma and mycorrhiza i.e. the Trichoderma would start feeding off the Mycorrhiza." Here he refers to the fact that Trichoderma is a fungal parasite: why should he not attack mycorrhizal fungi?

And he continues: "I do know of some Dutch scientists that have however found no antagonism, in fact the two organisms work well together, that may have been down to a unique strain of Trichoderma. It is here that we are right on the edge of science and what we know, it will probably be a decade or so before we understand these interactions better." But his assertions were non factual and vague.

In one of your later posted message referenced "Reply #82 on: July 20, 2011, 10:11:52 AM" under the same thread, you added a link to an interesting on line article, which answers for sure, directly and indirectly (connections with scientific references), that mycorrhizae and Trichoderma can synergize their protective action on plants.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on December 01, 2011, 09:26:00 AM
Lesley,

I read somewhere in this forum and in various documents about some questions concerning the need to inoculate substrates multiple times vs. just once with Trichoderma.

I have just received a commercial product for either soil or hydroponics, and they write in the documentation (although a commercial brand !):

"In soil, it will reproduce itself easily" and "In hydroponics, use it with (...) a device that creates the necessary conditions for its reproduction (...) which will allow to keep it alive and healthy"

I have read somewhere that Trichoderma can gradually disappear and that it may be necessary to inoculate the substrate again.

But from what is written above, it also seems that if the conditions allow its population to sustain itself, there is no need for multiple applications.

Now, the whole question is to be able to manage these sustaining conditions, and to be able to detect that Trichoderma population has disappeared and inoculation is required again.

I hope that I could clarify a little more with that input.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 03, 2011, 09:47:24 PM
Thank you, Croquin. We want more scientific research, I think.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on December 03, 2011, 11:22:10 PM
This picture is for Michael in Ireland as I can't put it in a PM, already sent. This is rootmate but I also use plantmate - more for clematis etc where I'm planting out. I use this for potting and seed sowing. This one is twice the weight for the same price. ???


Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on December 03, 2011, 11:27:27 PM
I'm not sure if it has been mentioned before, but Trichoderma is pretty useless for cuttings if you are using a high or total grit content for the rooting material. The fungus, not un-naturally, needs quite a high humus content to be effective. I read somewhere that it should be not less than 25% but I think even that is rather sparse. I tend to use the fungus when the grit content is 25% or less.

But then, one is likely using a rooting hormone of some kind, or the excellent willow water for cuttings. :)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on December 04, 2011, 05:25:54 AM
Yes, it seems that it needs to have something to eat.

The commercial product I was mentioning in my last message under this thread...
It gives two different information about the microorganism perennity:

1) the information I already gave is in the instruction booklet
2) written on the packet is: to use every 6 to 8 weeks

héhéhé...
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 04, 2011, 06:36:24 PM
Me using it for chipping when the chips are incubated in perlite/vermiculite is giving it a hard time, then. But I suppose it only has the bad fungi to go for...
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on December 04, 2011, 07:31:21 PM
I'm not sure I've understood the situation  ???
chipping is too specific to find the correct meaning in the dictionary without cultural references, please give me more information.
then the relation between chipping and bad fungi.
sorry  :-[
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 05, 2011, 06:44:59 PM
Apologies, Croquin. "Chipping" is the process where bulbs are cut into pieces in order to force them to make small new bulbs on the pieces. This is a fast way to get more bulbs of a cultivar.  The pieces are stored in perlite or vermiculite until the new bulbs form. I hope I have explained - it is difficult without using too many words! Please ask if it is not clear.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 05, 2011, 06:46:04 PM
Also - a fungicide is usually used to prevent disease on the cut pieces. I tried trichoderma instead.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on December 05, 2011, 07:31:27 PM
For anyone new to the practice, it may be worth mentioning that chipping involves slicing the bulb lengthways, down the bulb so that a small section of the base is present on each new piece.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on December 05, 2011, 08:18:25 PM
Thanks Anne and Lesley, I understand the technique (I know about it but I was far away to get the reference to it from Anne's sentence, it is the type of situation where words have a very technical meaning and will bring confusion - associated meanings to the word "chipping", I had only computers and preparing compost, which was not making sense AT ALL !  :o )

Are you saying that Trichoderma is in a way or another digesting/attacking bulb chips ?
Or that it is having troubles developping as a fungicide replacement for protecting chips from other fungi ?

I guess without being 100% sure that you meant the second point.

If so, is it not due to the lack of organic matter in the environment, replaced by vermiculite ?
I would guess we are back to Lesley's message of December 3.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 06, 2011, 12:20:11 PM

Or that it is having troubles developping as a fungicide replacement for protecting chips from other fungi ?
If so, is it not due to the lack of organic matter in the environment, replaced by vermiculite ?

That is what I meant - but I hope that the trichoderma would still feed from the 'bad' fungi before it died of hunger.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 06, 2011, 12:27:44 PM
What is the name of the 'chipping' technique in your language, Croquin? (French?)
I wonder what it is called in German, Dutch etc?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lina Hesseling on December 06, 2011, 02:25:57 PM
In The Netherlands we also say chipping. I think in Germany they do too. As far as I know there is not a real dutch word for it.

Lina.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on December 06, 2011, 06:35:34 PM
Now is your chance to invent one!
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on December 06, 2011, 06:59:11 PM
it seems to be... cutting  :o
but most of the time people will be less technical and rather say "division" or "bouture", even though it really is a barbarian axe-slicing like procedure.
I guess the plant must hate its grower after that  ;D
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: gote on January 14, 2012, 01:38:34 PM

Or that it is having troubles developping as a fungicide replacement for protecting chips from other fungi ?
If so, is it not due to the lack of organic matter in the environment, replaced by vermiculite ?

That is what I meant - but I hope that the trichoderma would still feed from the 'bag' fungi before it died of hunger.
Anne,
I may be talking through my hat but as I understand it, the use of perlite is because perlite is sterile. What would happen if the scales/chips were placed in leafmould with trichoderma added?? As far as I know lily scales work well in normal soil with humus fungi and all as long as there is not too much Botrytis around (It has worked for me)
Perhaps even putting say five chips in high humus soil with trichoderma and just letting them grow "naturally"??
Interesting stuff this
Göte

Göte
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on January 15, 2012, 09:17:57 PM
I'll try and remember to do that next year. This year.  ::)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnw on February 23, 2012, 05:57:25 PM
What is the name of the 'chipping' technique in your language, Croquin? (French?)
I wonder what it is called in German, Dutch etc?

I'm surprised it isn't crisping in the UK.

Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 28, 2012, 08:24:19 AM
No, we call it French frying.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on May 20, 2012, 09:20:37 PM
Dear All !

I have tried Trichoderma on a potted Schlumbergera and on crocuses planted in the garden.
This was mainly a first experiment after being advised by Lesley about it on this forum.
I report some observations below.

1) Schlumbergera blooms for xmas and is therefore with flowers in december.
Trichoderma seems to have produced a weird effect on the biological cycle of the plant I tested : it started to bloom again in february, and continuously until now, with a set of gigantic flowers almost twice the usual size.
Because it has been flowering, it has not started to grow new "leaves" yet.
The negative side of the story is that the plant seems to rot from the compost, at least on those non-woody younger parts.
Replanting cuttings in the same pot results in the same phenomenon - I never had any issue having a schlumbergera cutting get rooted before !
Therefore I thought that Trichoderma was hungry and feeding of the plant, is that correct or possible ?

2) I also tried Trichoderma on a set of crocus plants that I knew to be infected with corm rot fungi (half rot corms planted last fall).
The new generation of corms has been apparently cleaned of the disease, which is indeed quite interesting.

Did those of you who have used Trichoderma before observed such positive and negative effects on their plants ?
How would you stop Trichoderma (kill it) when it starts attacking a potted plant ?
What other uses can we find for this fungus ?

Thanks for your answers.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on May 20, 2012, 10:07:55 PM
I treated some galanthus infected with stagonospora last year, and there was virtually no sign of disease this year.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Ezeiza on May 20, 2012, 10:22:46 PM
I have also tried Trichoderma following lovely Lesley enthusiastic advice and can confirm her mentioning that it does not work if the inorganic (mineral) content of the mix is high.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on May 21, 2012, 03:25:11 AM
I've not heard or read of any plant as such being attacked, only some other fungi. Since it is supposed to stop (bad) fungal attacks, maybe something other than the trichoderma caused the rot of your plant Croquin? It's not a plant I know so can't really comment
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on May 21, 2012, 09:11:44 AM
Thanks for your kind comments  :-*

Hello Ann,
it is a good news to know how efficient it can be - to the point to eradicate rot problems on bulbous plants (those ones you will usually keep in the infected soil as a pain in the back).
Do you know if Trichoderma can be used against leaves fungi ?
How would you do that, spraying a solution I guess ?
Have you or someone else tried ?

Hello Lesley, here is some Schlumbergera pics - I'm sure that you know this plant.
http://whatafy.com/storage//2012/05/2012/05/02/apartment-plants-schlumbergera/Schlumbergera.jpg (http://whatafy.com/storage//2012/05/2012/05/02/apartment-plants-schlumbergera/Schlumbergera.jpg)
http://www.flickr.com/photos/martoni/1854203161/#lightbox/ (http://www.flickr.com/photos/martoni/1854203161/#lightbox/)

I was not asking a specific answer for Schlumbergera though - maybe someone who tried this biocontrol agent observed side effects with other plants ?
I read somewhere that some species of Trichoderma can be bad plant fungi.
It is not supposed tot be the case with the commercial strain I used, selected for its beneficial actions on plants and for its horticultural applications.
However, in the current case, I was supposing that - maybe, the strain turned to be too strong and fed on any organic material it found ?
Furthermore, if anything caused a wound to the plant roots or to its soft tissues, it could have been an open door to the fungus ?
My speculations only.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Gerry Webster on May 21, 2012, 10:19:41 AM
A seller on EBay is offering 'TNC Trichoderma Capsules' at £8.95 for 10:

http://www.ebay.co.uk/itm/TNC-Trichoderma-Capsules-Beneficial-Fungi-/250859985213?_trksid=p3284.m263&_trkparms=algo%3DSIC%26its%3DI%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D21%26pmod%3D250859990500%26ps%3D54 (http://www.ebay.co.uk/itm/TNC-Trichoderma-Capsules-Beneficial-Fungi-/250859985213?_trksid=p3284.m263&_trkparms=algo%3DSIC%26its%3DI%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D21%26pmod%3D250859990500%26ps%3D54)

The instructions are:  one capsule  to be dissolved in 1 litre of dechlorinated water & the solution watered on.

Has anyone tried this?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on May 21, 2012, 01:19:40 PM
no, I tried a powder - you buy any amount you want but usually it is sold in small packet doses of 10 or 20 g.
same using principle : to be dissolved into the watering solution or to be added to the hydroponics solution.

previously as far as I remember, Lesley or someone else was also mentionning granules to be mixed with the compost.

I would guess that for a small amount of potted plants, the capsule is nice and makes it of easy use.
For bigger soil surface, especially outdoors, powder offers larger possibilities.

on the e-bay add you've provided, T22 specifies the Trichoderma strain, I do not know if it has any meaning for end users though.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Gerry Webster on May 21, 2012, 02:13:27 PM
I treated some galanthus infected with stagonospora last year, and there was virtually no sign of disease this year.
Anne - have you used it with Narcissus? This year I had Stagonospora infections on N. rupicola & N. asturiensis & wonder whether to try trichoderma rather than a fungicide - what remains of my carbendazim.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on May 21, 2012, 11:21:34 PM
Hi Gerry, yes I used it on all my bulbs as I potted them. I usually have a low-level infection in some narcissi. This year there was none.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on May 22, 2012, 12:10:59 AM
Oh yes Croquin, now you've sent the links, I know what you mean. We know them here as Christmas Cactus because they are in bloom then, through the summer. I've not grown them but my late mother-in-law had a nice collection.

Re leaf fungi, I've not had much of a problem with these but Trichoderma either watered into the planting hole or dug in as granules, totally solves the problem of wilt disease in clematis, quite a problem in commercial forms of large-flowered varieties here.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on May 22, 2012, 12:14:27 AM
I was sure !!  8)
You see, it has soft tissues that can be easily eaten by a fungi - athough it never happens usually.
That's why I speculated... as usual  :-X
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Ezeiza on May 22, 2012, 04:52:30 AM

".....it has soft tissues that can be easily eaten by a fungi ....................."

But, they have to rot first.

And Trichoderma can clean the soil/mix of disease but can not solve drainage problems.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Croquin on May 22, 2012, 08:55:56 AM
This is sound - supposing there was a drainage problem...
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Gerry Webster on May 22, 2012, 09:59:50 AM
Hi Gerry, yes I used it on all my bulbs as I potted them. I usually have a low-level infection in some narcissi. This year there was none.
Thanks Anne - I'll try it.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on January 04, 2013, 09:48:26 AM
In the UK you can now get Trichoderma harzianum as:
 
Canna AktTRIvator http://www.canna-uk.com/aktrivator (http://www.canna-uk.com/aktrivator)
Dragonfli Growboost http://www.dragonfli.co.uk/product/ps-02 (http://www.dragonfli.co.uk/product/ps-02) (T-22 strain)
The Nutrient Company TNC-Trichoderma http://www.thenutrientcompany.com/hydroponic/trichoderma_product/ (http://www.thenutrientcompany.com/hydroponic/trichoderma_product/)

The latter two suppliers seem to have arrived since I last looked about two years ago.

There is also a bulk (horticultural trade) product called Trianum http://www.trianum.com/en/home.html (http://www.trianum.com/en/home.html) (thanks to Anne for this)

There is detailed information on Trichoderma harzianum in this database http://sitem.herts.ac.uk/aeru/bpdb/index2.htm (http://sitem.herts.ac.uk/aeru/bpdb/index2.htm)

Edit:  Modified to correct the spelling of harzianum - thanks to John Aipassa for pointing out my error.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: John Aipassa on February 01, 2013, 10:54:37 PM
In The Netherlands we also say chipping. I think in Germany they do too. As far as I know there is not a real dutch word for it.

Lina.

I stumbled upon this older post about how chipping is called in Dutch. Since we use English words all the time in our Dutch language sometimes the English word is considered to be the Dutch word too, but in this case "chipping" is not the true Dutch word for chipping. The Dutch word is "parteren".
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Brian Ellis on February 02, 2013, 07:09:10 AM
I shared some of Anne's trichoderma last year and have added it to lots of snowdrops.  The most significant 'result' is that one quite sickly 'drop which was due for the bin this year if it didn't improve, looks really quite good.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: John Aipassa on February 02, 2013, 07:39:38 AM
In the UK you can now get Trichoderma Hazarium as:
......<snip>....

The species is actually Trichoderma harzianum instead of Hazarium and it is the T-22 strain that has been researched the most. The brand Trianum has the T-22 strain.

Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on February 02, 2013, 02:55:05 PM
As the temperatures rise again, I'll be watering on a solution of trichoderma so that it can recolonise the plants and compost. I've got very good control of stagonospora this season.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Gerry Webster on March 10, 2013, 08:39:45 PM
Last Autumn - thanks to AnneW - I treated all my potted Narcissus with Trichoderma. Last year N. asturiensis & N. cyclamineus showed low levels of Stag infection. This year they seem to be completely clear. On the other hand, N. rupicola - which I find a difficult species & which was badly infected last year - still seems infected, though not quite as badly.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnralphcarpenter on August 13, 2013, 12:43:16 PM
Does anyone know a supplier of Trichodowels in the UK? Or can they be imported from NZ?
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnralphcarpenter on September 20, 2013, 07:14:41 PM
To answer my own question, FAST, Farm Advisory Services Team Ltd at Brogdale Farm, Faversham, Kent have them: http://www.fastltd.co.uk/ (http://www.fastltd.co.uk/)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on February 20, 2014, 11:12:28 AM
Just a little update to day that Dragonfli have re-jigged their Trichoderma product from something that was intended to be watered-on to something that is intended to be mixed with soil or compost.  The new product is called 'Plant Boost' and is supposed to have a longer shelf life.  It still contains Trichoderma harzianum T-22. 
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnstephen29 on November 21, 2014, 04:44:04 PM
I am amazed how quickly botrytis can take hold, I checked my plants in the green house on Sunday, all ok. When I checked the plants again on my day off from work a number of my pelargoniums had it on there leaves, I've been checking all the plants in there hopefully I've got it sorted.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on November 21, 2014, 04:54:22 PM
Yes, it can develop and spread faster than runny jam on toast!  We are constantly checking our glass house plants - which are , as you might guess, mostly bulbs -  to remove any flowers going over. A crocus flower can be covered in botrytis before it even hits the ground.

Vigilance on such matters is important - and it does pay dividends for protecting your precious plants.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnstephen29 on November 22, 2014, 06:18:05 PM
I'll have to check the again tomorrow
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on November 23, 2014, 08:03:44 PM
Last Autumn - thanks to AnneW - I treated all my potted Narcissus with Trichoderma. Last year N. asturiensis & N. cyclamineus showed low levels of Stag infection. This year they seem to be completely clear. On the other hand, N. rupicola - which I find a difficult species & which was badly infected last year - still seems infected, though not quite as badly.

That's interesting Gerry, that you have difficulty with N rupicola I mean. For me, it is among the easiest, growing well yearly, seeding freely and flowering from seed in 2-3 years. It's one of my most popular plants for sale, 3 or 4 in a little pot, in flower in mid spring.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnstephen29 on December 03, 2014, 01:22:46 PM
Still having problems with botrytis, it's only on a few stock pelargoniums at the moment thank goodness, just wondering if it might be better to get rid of these and play it safe.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on December 21, 2014, 07:36:09 AM
There are many different strains of botrytis that are (as I understand it) specific to different plants.  If your pelargoniums are replaceable then getting rid of them is the safest course of action, particulalry if you have other pelargoniums that are as yet unaffected. 
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: johnstephen29 on February 01, 2015, 09:41:03 PM
Hi I have just been reading everyone's comments on trichoderma, it sounds amazing stuff. I have just ordered some from dragonfl, see how I get on with it.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Maggi Young on June 02, 2016, 05:16:15 PM
This report is rather depressing .....  http://odanews.wpengine.com/oda-finds-big-problems-with-little-organisms/ (http://odanews.wpengine.com/oda-finds-big-problems-with-little-organisms/)
 
Report  from Oregon Dept. of  Agriculture on products  claiming to contain mycorrhizal fungi.
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Lesley Cox on June 03, 2016, 12:48:43 AM
Thanks for this report Maggi, Yes, it does sound depressing because as small home gardeners we don't have the ability to do the testing for ourselves and as always, have to take on trust, the big firms and corporations who will always tell us what is to their own advantage.

There is no indication about whether the products tested were all of American origin as I suspect they were, but can't be sure of course. New Zealand firms probably have their own share of either fraudsters or incompetents (well I know they have; steel recently imported from China, for, and used to build new bridges has been found to be under strength and where already used has had to be reinforced with extra concrete (usually the other way around) while new steel has had to be ordered for the bridges yet to be built.)

I continue to use trichoderma products, always in small packets so not massively expensive and so far have every reason to believe the products are up to their claims. Newly planted clematis and those of up to three years old are all thriving, not the case BEFORE trichoderma. But I'll be writing to the manufacturers and asking for their regime for manufacture, citing the Oregon report.

We're told that "rust never sleeps." Obviously we as gardeners can not sleep either in that we need always to be aware that what seems to be fine could easily turn out to be a disaster in the making. I went to see G and S's HMS Pinafore recently and am reminded that "Things are seldom what they seem, Skim milk masquerades as cream, Storks turn out to be but logs, Bulls are but inflated frogs......."
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: Alan_b on January 23, 2019, 11:17:55 AM
In post #136 I cited several sources of Trichoderma harzanium.  It is getting harder to find these days except in large quantities for agricultural use.  But Dragonfli have just restocked https://www.dragonfli.co.uk/collections/trichoderma-harzianum/ (https://www.dragonfli.co.uk/collections/trichoderma-harzianum/)

The trend these days is to supply mixtures of fungi (and possibly bacteria also) rather than "pure" Trichoderma. 
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: annew on January 23, 2019, 07:17:31 PM
Thanks, Alan. I just sent a query to this company too:
https://thenutrientcompany.com (https://thenutrientcompany.com)
Title: Re: Trichoderma (& treatment of Botrytis galanthina)
Post by: pehe on January 24, 2019, 05:20:12 PM
Promot Plus which contains Trichoderma harzianum: 2x10E7 CFU/g and Trichoderma koningii: 3x10E7 CFU/ is available from several companies in Germany: https://www.re-natur.de/shop/promot-plus.html (https://www.re-natur.de/shop/promot-plus.html), http://www.eco-bio-systems.de/mshop/Promot-Plus (http://www.eco-bio-systems.de/mshop/Promot-Plus), https://www.fluegel-gmbh.de/de/produkte/promot-plus/ (https://www.fluegel-gmbh.de/de/produkte/promot-plus/)

Poul
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