Shivanand S.K., Shivakumar B.G., Patil S.L., Sridhar K. and Gundlur S.S.
Abstract
A field experiment was carried out during kharif 2024 at the farm of the ICAR-IGFRI, SRRS, Dharwad to study the effect of phosphorus application with biofertilizers like phosphate solubilizing bacteria (PSB) and vesicular arbuscular mycorrhiza (VAM) on grain yield and economics of cowpea varieties. The experiment was laid out in split-plot design with three varieties of cowpea in main plots, five phosphorus levels in sub plots and replicated thrice. The grain type cowpea variety âDC-15â recorded significantly higher grain yield (12.37 q ha-1), harvest index (33.97%), gross returns (100011 ha-1), net returns (66084 ha-1) and B:C ratio (2.94). Application of 100% RRP + PSB + VAM recorded higher grain yield (11.84 q ha-1), harvest index (29.17%), gross returns (97403 ha-1), net returns (62124 ha-1) and B:C ratio (2.75). There were no significant interaction effects among cowpea varieties and phosphorus levels on grain yield and economics of cowpea varieties.