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Was a very interesting read LariAnn. Have you been doing any research with T22 yourself? I have a research project that I am working on titled Biological Control Using Trichoderma harzianum as a Liquid Drench on Broccoli and Melon Seeds. (sorry don't know how to italize on here yet).
I am investigating the capabilities of Trichoderma harzianum Rifai 1295-22 (T-22) s a souble pre-seed drench on broccoli and melon seeds on field soil and greenhouse potting mix.
If you have an experimentation going on, I would be interested to learn some of your finds. I hope to have my paper finished in a few weeks. it has been an interesting experiment and am getting ready to start pulling plants and observing and photographing the roots soon.
I did do a research study last year using ten different Alocasia species, two replications and nine different treatments, plus a control. The work was done in conjunction with the University of Florida Tropical Research and Education Center, Homestead, Florida. This extensive study ran for four months but I had to terminate it due to adverse weather events. The results were not conclusive enough for a paper, but I did learn quite a bit from the data acquired from it.
My most important finding was that several biocontrol products used together were, statistically, more effective than products used individually. One of the best performing products used individually was the T-22 (RootShield).