Highly effective and multifunctional microbial compositions and uses
The disclosure generally describes the discovery of a train of Trichoderma gamsii (NRRL B-50520) that has multiple capabilities for various uses in plant agriculture and development of systems for its use. This patent application compares its abilities to enhance plant agriculture for a number of applications with a number of other microbial agents and that are contained within useful formulations. While other strains or mixtures have abilities to confer one trait or another, this strain appears to be uniquely versatile in its capabilities. It can be used in conventional or organic agriculture for the promotion of plant growth and increase in crop yields when applied topically as a foliar spray or as a seed coating. The highly active products also are expected to increase plant productivity and improve quality of fruits, vegetables, flowers or other plant products.
1. A composition consisting of:
a. a single microbial agent consisting of viable Trichoderma gamsii strain NRRL B50520, said strain possessing multifunctional capabilities selected from the group consisting of an increase in one or more beneficial plant attributes, said one or more beneficial plant attributes selected from the group consisting of plant growth, yield, root development, resistance to abiotic stresses, photosynthetic efficiency, reduction of foliar disease, controlling nematodes, inducing systemic changes in plant gene expression, remaining localized in the plant root system, protecting planted seeds from soil-borne pathogens, controlling populations of insect pests and combinations thereof, wherein the increase in the one or more beneficial plant attributes is as compared to a plant or plant system without the microbial agent;
b. an agronomic adjuvant mediator selected from the group consisting of humic acid, fulvic acid, a yeast extract, and mixtures thereof, wherein the agronomic adjuvant mediator does not naturally occur in combination with the microbial agent; and
c. the composition, optionally, further consisting of one or more microbial metabolites selected from the group consisting of 6-pentyl pyrone, harzianic acid, hydtra 1, harzinolide, 1-octen-3-ol, sufactin, iturin, fengycin, polyketides and mixtures thereof.
2. The composition of claim 1 , wherein the composition comprises the microbial metabolite 1-octen-3-ol.
3. The composition of claim 1 , wherein the abiotic stresses are selected from the group consisting of drought, osmotic stress, an increased salinity, a decreased salinity, flooding and combinations thereof.
4. The composition of claim 1 , wherein the increased photosynthetic efficiency increases more under stress conditions compared to unstressed conditions.
5. The composition of claim 1 , wherein the one or more beneficial plant attributes is selected from the group consisting of:
a. controlling nematodes wherein the nematode control comprises one or more of: an inhibition of egg laying, a reduction in root galling, and a reduction in nematode numbers in soil surrounding roots;
b. controlling populations of insect pests wherein the insect pests are selected from the group consisting of white flies, aphids and combinations thereof, and
c. protecting planted seeds from soil-borne pathogens wherein the soil-borne pathogens are selected from the group consisting of Fusarium, Pythium, Rhizoctonia solani and mixtures thereof.
6. The composition of claim 1 , further consisting of one or more microbial metabolites selected from the group consisting of 6-pentyl pyrone, harzianic acid, hydtra 1, harzinolide, 1-octen-3-ol, sufactin, iturin, fengycin, polyketides and mixtures thereof.