M. Pradhan, Shilpee Dhali, R. Sahoo, C. Pradhan, S. Mohanty
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Effect of P solubilizing bacteria and P fertilizer on inorganic P fractions of acid soil and its influence on P uptake in groundnut (Arachis hypogaea L)
The present study described the influence of Bacillus amyloliquefaciens CTC12 (KT633845) and Burkholderia cepacia KHD08 (KT717633) in combination with inorganic P fertilizer (SSP) on the inorganic P fractions (Ca-P and non occluded Al-P and Fe-P) in an acid agricultural soil. Though not significant but the highest available phosphorus was found with the combined application of 75 per cent P as SSP and inoculum KHD08 at 75 days after sowing (DAS) and harvest. Non-occluded Al-P and Fe-P accounted for maximum inorganic P fraction. Plots receiving 100 per cent single super phosphate (SSP) either sole or in combination with PSB recorded maximum non occluded Al-P and Fe-P and Ca-P. Sole application of Bacillus amyloliquefaciens CTC12 or Burkholderia cepacia KHD08 reduced the concentration of non occluded Al-P and Fe-P as well as Ca-P. The application of P solubilizing bacteria least influenced soil pH and organic carbon. However, combined application of P solubilizing bacteria and single super phosphate positively influenced pod yield and kernel P uptake. The beneficial effect of these rhizo-bacteria can be effectively used as bioinoculants combined with lower doses of inorganic P fertilizer in problematic acid agricultural soils in order to enhance crop productivity and soil available P.
期刊介绍:
Legume Research An International Journal. The Journal is an official publication of Agricultural Research Communication Centre. It is designed to bring out the original research articles on genetics, breeding, physiology, bacterial avtivity, production, quality, biochemistry and seeds of legumes crops. The objective of the journal is to serve as a forum for scientific community to publish their research findings on legumes ans to provide basis for new research. Journal is being scanned in the important indexing and abstracting services.