The study investigates the effects of organic manures, biofertilizers, and phosphorus on the growth, yield, quality, and soil nutrient status of black green gram. Bio compost applied at 2 t/ha (M2) significantly enhanced plant growth, yield, protein content, and nutrient uptake, along with the highest seed (909.00 kg/ha) and Stover (1771.56 kg/ha) yields. PSB inoculation (B1) improved growth attributes, seed yield (830.36 kg/ha), and nutrient uptake, while phosphorus application at 40 kg/ha (P2) resulted in superior growth, yield, and protein content. The combination of bio compost, PSB inoculation, and phosphorus (M2B1P2) delivered the highest net return (45851 /ha) and BCR (3.37). Organic manures and biofertilizers enhanced soil nutrient status, with bio compost improving N and P, while PSB inoculation increased available P.
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