Chemistry: fertilizers – Processes and products – Bacterial
Patent
1995-06-15
1999-06-15
Lander, Ferris
Chemistry: fertilizers
Processes and products
Bacterial
71 6407, 71 6411, 71 6413, 4352625, C05F 1108, A01N 2500, B09B 300
Patent
active
059123982
ABSTRACT:
A composition is disclosed for providing phosphate fertilizer to the root zone of plants. The composition comprises a microorganism capable of producing and secreting a solubilization agent, a carbon source for providing raw material for the microorganism to convert into the solubilization agent, and rock phosphate ore for providing a source of insoluble phosphate that is solubilized by the solubilization agent and released as soluble phosphate. The composition is provided in a physical form, such as a granule, that retains the microorganism, carbon source, and rock phosphate ore, but permits water and soluble phosphate to diffuse into the soil. A method of using the composition for providing phosphate fertilizer to plants is also disclosed.
REFERENCES:
patent: 5256544 (1993-10-01), Rogers et al.
Sperber, J., "Solution of Mineral Phosphates by Soil Bacteria," Nature vol. 180, pp. 994-995 (1957) no month.
Halder, A. K., "Solubilization of Roc kPhosphate by Rhizobium and Bradyrhizobium," Journal of General Appl. Microbiology, vol. 36, pp. 81-92 (1990) no month.
Louw, H. A., "A Study of Soil Bacteria Dissolving Certain Mineral Phosphate Fertilizers and Related Compounds," Journal of Appl. Bact., vol. 22, pp. 227-233, 1959 no month.
Ancheng, "Effect of organic manure on the biological activities associated with insoluble phosphorus release in a blue purple paddy soil", Abstract, 121:107357, 1994, Commun. Soil Sci. Plant Anal. 25(13-14) no month.
Rogers et al, "Research and engineering assessment of biological solubilization of phosphate", 1993, Abstract 122:110025, Energy Res. Abstr, 1993, 18(9) Abstr #26522 no month.
Minhoni et al Effect of five types of organic matter on the microbial solubilization of rock phosphate, Abstract 115:255072, Rev. Bras. Cienc. Solo 1991, 15(1), 29-35 no month.
Goldstein Alan H.
Rogers Robert D.
Kirsch Alan D
Lander Ferris
Lockheed Idaho Technologies Company
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