Solubilization Of Inorganic Phosphates By Bacteria From Coconut Plantation Soils
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1986
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Studies on the distribution of phosphate-solubilizing bacteria in coconut plantation soils revealed that clayey soils harboured less population than laterite, alluvial and sandy soils. Pseudomonas sp., Micrococcus sp., Micrococcus roseus, Bacillus subtilis, Corynebacterium sp. and Alcaligenes sp. were the phosphate-solubilizing bacteria encountered in coconut soils. In vitro estimation of the phosphate-solubilizing ability of the isolates revealed solubilization of 19.S to 54 per cent of the insoluble phosphates supplied in the culture broth. Inoculation of soils with efficient phosphate-solubilizing bacteria after addition of farm yard manure and rock phosphate released more available P from insoluble P sources. , M. roseus and B. subtilis possessed better capacity to survive in unamended soils, as compared to the other phosphate-solubilizing bacteria tested and have a great potential as inoculants in crop plants for better utilization of insoluble P-sources.
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J.Plantn.Crops 1986 v-14 i-1 p-42-48