Enhancing Productivity of Rajma (Phaseolus vulgaris L.) by Managing Soil Acidity and Organic Nutrient Management under Arunachal Hill Conditions

A study was conducted at farmers’ field of Tirap District of Arunachal Pradesh to test the effect of organic sources of soil nutrient management with Lime for soil acidity management and for yield improvement of Rajma (Phaseolus vulgaris L.) variety Chitra. The experiment was conducted by following 3 treatments: T1: (Lime @ 350 kg/ ha+ FYM @ 4 t/ha + Neem cake @300 kg/ha+ vermicompost @ 4 t/ha + Azospirillum 10kg/ha, T2: FYM @ 4 t/ha + Neem cake @ 300 kg/ha + vermicompost @ 4 t/ha + Azospirillum 10 kg/ha. T3: (Farmers’ Practice) -FYM + N: P2O5: K2O: 40:20:15 kg/ha (imbalance doses of fertilizers) with 5 replications following randomized block design during 2021-22. From the results it is revealed that T1: (Lime @ 350 kg/ ha+ FYM @ 4 t/ha + Neem cake @300 kg/ha+ vermicompost @ 4 t/ha + Azospirillum 10kg/ha, had showed significantly higher seed yield (10.2 q/ha), gross return (Rs 1,53,000/), net return (Rs 106,824) and B:C ratio (2.31), followed by T2 (FYM @ 4 t/ha + Neem cake @ 300 kg/ha + vermicompost @ 4 t/ha + Azospirillum 10 kg/ha), seed yield 9.3 q yield, Rs. 1,39,500/ gross return, Rs 95,620 net return and 2.17 B:C ratio. While, lowest yield and B:C ratio was recorded (7.1 q/ha, B: C ratio 1.84) with T3 (Farmer’s practice). Moreover, improved soil nutrient status was achieved in T1 followed by T2 and T3.