Technical Bulletin : BIOFERTILIZER TECHNOLOGY FOR VEGETABLE CROPS

Abstract

Not AvailableEfficient N, P and K biofertilizer microorganisms were isolated from Kerala soils. The compatibility of these N, P and K biofertilizer microorganisms were studied and the most compatible organisms were selected. They include two nitrogen fixers (Azotobacter chroococcum, Azospirillum lipoferum), a phosphate solubilizing bacterium (Bacillus megaterium) and a potassium solubilizing bacterium (Bacillus sporothermodurans). In order to reduce the cost of production, a new medium (PGPR medium) was developed for the mass multiplication of these microorganisms. The technology for mass multiplication was standardized. Currently talc-based formulation of PGPR Mix – I is being produced for distribution to farmers throughout Kerala. When single inoculant biofertilizer technology give yield increase of 10 percent, PGPR Mix – I is found to give yield increase of 20 - 25 percent depending on the crop.Not Availabl