Biofertilizer formulation
Strains of psychrophilic bacteria isolated from the rizosphere of Deschampsia antarctica are characterized and biofertilizer compositions comprising one or more of these psychrophilic bacteria strains are disclosed.
1. A biofertilizer composition, comprising psychrophilic bacterial strains isolated from rhizosphere of Deschampsia antarctica , wherein the composition contains bacterial strains selected from the group consisting of Pseudomonas antarctica DaBact TI-9, Pseudomonas trivialis DaBact 2H and Arthrobacter ssp. DaBact MII-9.
2. The biofertilizer composition of claim 1 , wherein the composition contains Pseudomonas antarctica DaBact TI-9, Pseudomonas trivialis DaBact 2H and Arthrobacter ssp. DaBact MII-9 strains in equal concentrations.
3. The biofertilizer composition of claim 1 , wherein the fertilizer is prepared before use by combining a solution of bacterial suspension comprising the bacterial strains and a sun protecting product with a polysaccharide solution.
4. The biofertilizer composition of claim 3 , wherein the polysaccharide solution contains 1% w/v of a polysaccharide, and the polysaccharide is selected from the group consisting of guar gum, gelan gum, pectin, carboxymetil cellulose, agar, and xantan gum.
5. The biofertilizer composition of claim 1 , wherein the biofertilizer composition is for seed coating.
6. The biofertilizer composition of claim 5 , wherein the composition improves seed germination.
7. The biofertilizer composition of claim 5 , wherein the composition is compatible with any commercial fungicide.
8. The biofertilizer composition of claim 1 , wherein the bacterial strains are encapsulated in allignate beads.
9. The biofertilizer composition of claim 1 , wherein the biofertilizer is applicable to crop and forest plants.
10. The biofertilizer composition of claim 9 , wherein the crop plants are dicotyledonous plants.
11. The biofertilizer composition of claim 10 , wherein the crop plant is tomato or soy bean.
12. The biofertilizer composition of claim 9 , wherein the crop plants are monocotyledonous plants.
13. The biofertilizer composition of claim 12 , wherein the crop plant is wheat.
14. The biofertilizer composition of claim 9 , wherein the composition improves phosphorus solubilization in soil.
15. The biofertilizer composition of claim 1 , wherein the bacterial strains excrete indolacetic acid (IAA).
16. A method to improve phosphorus solubilization in soil by applying the biofertilizer composition of claim 1 to the plant.
17. A method to improve seed germination by coating the seed with the biofertilizer composition of claim 1 .
18. A method to improve seed germination by disinfecting the seed with commercial fungicide and thereafter coating the seed with the biofertilizer composition of claim 5 .
19. A method to improve plant growth in low temperatures by applying the biofertilizer composition of claim 1 .
20. A method to improve plant uptake of water and minerals by applying the biofertilizer composition of claim 1 to the plant.
21. A method to improve root growth of the plant by applying a biofertilizer of claim 1 to the plant.
22. A biofertilizer composition being prepared before use by combining a bacterial suspension and a polysaccharide solution, wherein said bacterial suspension consists of Pseudomonas antarctica DaBact TI-9, Pseudomonas trivialis DaBact 2H and Arthrobacter ssp. DaBact MII-9 strains each at concentration of 10 12 CFU and 1% (w/v) of sun protecting product, and said polysaccharide solution being 1% (w/v) solution of guar gum, gelan gum, pectin, xarboxymetil cellulose, agar, agar or xantan gum.
23. A biofertilizer composition for use in low temperatures, said biofertilizer composition comprising bacterial strains Psuedomonas antarctica DaBact TI-9, Pseudomonas trivialis DaBact 2H and Arthrobacter ssp. Dabact MII-9.