Effect of black soldier fly digested organic manures on physico-chemical properties and nutrient status of soil in okra (Abelmoschus esculentus L.)

This study investigates the effect of black soldier fly digested organic manures on physico-chemical properties and nutrient status of soil in okra (Abelmoschus esculentus L.). The field experiment was laid out in factorial randomized block design (FRBD) included nine treatments and two varieties with 18 treatment combinations replicated thrice. The two varieties tested were Parbhani Kranti, Kashi Lalima and the organic manures used for testing were Aerobic decomposed poultry manure (@7.5 ton/acre, @ 5 ton/acre, @ 2.5 ton/acre) Black solider fly digested poultry manure (@ 7.5 ton/acre, @ 5 ton/acre, @ 2.5 ton/acre) FYM@10 ton/acre, Vermicompost @5 ton/acre, RDF (NPK) (48:24:24) and their combinations were investigated.+The application of Black solider fly digested poultry manure @ 7.5 ton/acre registered significantly reduced the pH (8.14), EC was significantly increased (0.57dS/m), decreased Bulk density (1.15g/cc) and increased organic carbon (0.53%). The application of Black solider fly digested poultry manure @ 7.5 ton/acre significantly increased available Nitrogen (223.36 kg/ha), available phosphorus (64.17 kg/ha) and available Potassium recorded (382.63 kg/ha). Among the varieties Parbhani Kranti was recorded with highest available Nitrogen (188.24 kg/ha), available phosphorus (51.69 kg/ha) and available Potassium (341.81 kg/ha). The interaction effect of Black solider fly digested poultry manure @ 7.5 ton/acre along with Parbhani Kranti was recorded maximum growth in okra and improved the physico-chemical properties and nutrient status of soil like highest available Nitrogen (235.20 kg/ha), available phosphorus (66.22 kg/ha) and available Potassium (381.93 kg/ha).