Validation of biointensive IPM practices against pest complex of organic black rice

Field Experiment to validate the Biointensive IPM (BIPM) package on black rice variety “Kola Chaul” revealed that BIPM package consisting seedlings root dip with Pseudomonas fluorescens @ 2% solution; application of organic manure MUKTA @ 2 t ha^-1; application of Beauveria bassiana @ 10¹³ spores ha^-1 against sucking pests, use of bird perch (10 ha^-1), 6 releases of Trichogramma japonicum @ 50,000 ha^-1 at 10 days interval starting from 30 days after treatment (DAT) for stem borer and leaf folder infestation along with need based application of botanicals NSKE 5% (5 l/ l^-1) could suppress the major rice pests and produce higher grain yield as compared to the farmer’s practice (FP). Maximum grain yield of 3124.8 kg ha^-1 and 3139.10 kg ha^-1 was recorded in BIPM field as compared to 2882.6 kg ha^-1 and 2897.20 kg ha^-1 in farmers practice plot during 2020-21 and 2021-22, respectively. Thus, BIPM practice was observed to be superior to FP with higher benefit: cost ratio.