Abstract

A field experiment was conducted during 1995-96 and 1996-97 to study the effect of phosphorus, Rhizobium culture, phosphate-solubilizing bacteria (PSB) and micronutrients on uptake of nitrogen and phosphorus and their balance sheet in soil of chickpea (Cicer arietinum L.) crop in a rice (Oryza sativa L.) based cropping system under rainfed conditions. Uptake of N and P increased with the increasing levels of P and it was further increased with application of phosphate- solubilizing bacteria alone or in combination with rhizobium culture with each level of P. Use of phosphate-solubilizing bacteria and rhizobium culture along with inorganic phosphorus fertilizers increased the grain yield and uptake of N and P. This also solubilized the native and applied phosphorus and reduced phosphorus fixation.

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