Non-toxic plant agent compositions and methods and uses thereof

1. A plant agent composition comprising a treated, fermented yeast supernatant including bio-nutrients, minerals and amino acids, and about 3% to about 20% of one or more nonionic surfactants, wherein the composition lacks any active enzymes due to the treatment, and wherein the composition has a pH below 5.0.

2. The plant agent composition according to claim 1 , wherein the plant agent composition comprises at least 35% by weight of the treated, fermented yeast supernatant.

3. The plant agent composition according to claim 1 , wherein the plant agent composition comprises at most 95% by weight of the treated, fermented yeast supernatant.

4. The plant agent composition according to claim 1 , wherein the one or more nonionic surfactants comprise a polyether nonionic surfactant, a polyhydroxyl nonionic surfactant, and/or a biosurfactant.

5. The plant agent composition according to claim 4 , wherein the polyhydroxyl nonionic surfactant comprises a sucrose ester, an ethoxylated sucrose ester, a sorbital ester, an ethoxylated sorbital ester, an alkyl glucoside, an ethoxylated alkyl glucoside, a polyglycerol ester, or an ethoxylated polyglycerol ester.

6. The plant agent composition according to claim 1 , wherein the one or more nonionic surfactants comprise an amine oxide, an ethoxylated alcohol, an ethoxylated aliphatic alcohol, an alkylamine, an ethoxylated alkylamine, an ethoxylated alkyl phenol, an alkyl polysaccharide, an ethoxylated alkyl polysaccharide, an ethoxylated fatty acid, an ethoxylated fatty alcohol, or an ethoxylated fatty amine, or a nonionic surfactant having the general formula of H(OCH 2 CH 2 ) x OC 6 H 4 R 1 , H(OCH 2 CH 2 ) x OR 2 , or H(OCH 2 CH 2 ) x OC(O)R 2 , wherein x represents the number of moles of ethylene oxide added to an alkyl phenol and/or a fatty alcohol or a fatty acid, R 1 represents a long chain alkyl group and, R 2 represents a long chain aliphatic group.

7. The plant agent composition according to claim 1 , wherein the one or more nonionic surfactants are an ethoxylated nonyl phenol, an ethoxylated octyl phenol, an ethoxylated ceto-oleyl alcohol, an ethoxylated ceto-stearyl alcohol, an ethoxylated decyl alcohol, an ethoxylated dodecyl alcohol, an ethoxylated tridecyl alcohol, or an ethoxylated castor oil.

8. The plant agent composition according to claim 1 , wherein the plant agent composition comprises from about 5% to about 15% by weight of the one or more nonionic surfactants.

9. The plant agent composition according to claim 8 , wherein the plant agent composition comprises from about 7% to about 13% by weight of the one or more nonionic surfactants.

10. The plant agent composition according to claim 9 , wherein the plant agent composition comprises from about 8% to about 12% by weight of the one or more nonionic surfactants.

11. The plant agent composition according to claim 1 , wherein the plant agent composition further comprises one or more anionic surfactants.

12. The plant agent composition according to claim 11 , wherein the plant agent composition comprises from about 0.5% to about 10% by weight of the one or more anionic surfactants.

13. The plant agent composition according to claim 12 , wherein the plant agent composition comprises from about 1% to about 8% by weight of the one or more anionic surfactants.

14. The plant agent composition according to claim 1 , wherein the pH is at most 4.5.

15. The plant agent composition according to claim 1 , wherein the plant agent composition further comprises an antimicrobial.

16. The plant agent composition according to claim 1 , wherein the treated, fermented yeast supernatant is from the genus Brettanomyces, Candida, Cyberlindnera, Cystofilobasidium, Debaryomvces, Dekkera, Fusarium, Geotrichum, Issatchenkia, Kazachstania, Kloeckera, Kluyveromyces, Lecanicillium, Mucor, Neurospora, Penicillium, Pichia, Rhizopus, Rhodosporidium, Rhodotorula, Saccharomyces, Schizosaccharomyces, Thrichosporon, Torulaspora, Torulopsis, Verticillium, Yarrowia, Zyvgosaccharomyces , or Zygotorulaspora.

17. A method of controlling a bacterial or fungal causal agent of a plant disease, the method comprising applying an effective amount of a plant agent composition as defined in claim 1 to one or more plants infested with a bacterial or fungal causal agent and/or applying an effective amount of a plant agent composition as defined in claim 1 to one or more locations in a manner where the causal agent will be exposed to the plant agent composition, wherein application of the plant agent composition results in an adverse effect on the bacterial or fungal causal agent sought to be controlled.

18. A method of increasing plant growth and/or crop production, the method comprising applying an effective amount of a plant agent composition as defined in claim 1 to one or more plants and/or applying an effective amount of a plant agent composition as defined in claim 1 to one or more locations where a plant agent composition will be exposed to the one or more plants, wherein application of the plant agent composition results in improved absorption by root hairs, improved xylem sap flow through xylem and improved photosynthate flow in phloem, increased uptake of water, minerals and other nutrients from the soil, increased capillary action and/or hydrostatic pressure in xylem, and/or increased synthesis of compounds and energy and/or disruption of one or more components blocking xylem sap flow and/or photosynthate flow.

19. A method of maintaining or improving the efficiency of an irrigation system, the method comprising applying an effective amount of a plant agent composition as defined in claim 1 to one or more pipes in a pipeline network of the irrigation system, wherein application of the plant agent composition dissolves, disperses, or otherwise removes biofilm blocking one or more pipes in the pipeline network of the irrigation system.