Integrated nutrient management in potato (Solanum tuberosum)-jute (Corchorus olitorius) sequence

Abstract

A field experiment was conducted during winter season of 1999-2000 and rainy season of 2002 at Mohanpur, West Bengal to evaluate the performance of potato (Solanum tuberosum L.)iijute (Corchorus olitorius L.) se- quence as influenced by two complex fertilizers, viz. NPK (10:26:26) and NPK (15:15:15) in conjunction with 25% N as farmyard manure. lntegrated use of complex fertilizers either NPK (10:26:26) or NPK (15:15:15) along with FYM (7.8 t/ha), recorded higher yield in comparison with the application of straight fertilizers + FYM (7.8 t/ha) in potato. A conjunctive use of NPK (10:26:26) and FYM in potato followed by an application of 40 kg N + 8.8 kg P + 16.6 kg Wha or only 40 kg Nlha in jute recorded the maximum yield of tuber (23.77 t/ha) and jute fibre (4.18 t/ha). lntegrated use of NPK (10:26:26) and FYM in potato with a fertilizer dose of 150 kg N + 44 kg P + 83 kg Wha had total uptake of N (160.2 kglha), P (30.8 kglha) and K (190.9 kglha) by the system (potato and jute crops) per an- num. After completion of three cropping sequences, it also improved the total N (10.2%), available P (6.3%) and available K (3.9%) status over the initial soil status. lntegrated nutrient management with NPK (10:26:26) + FYM in potato followed by application of 40 kg N + 8.8 kg P + 16.6 kg Wha in jute earned maximum net returns (Rs 48,580lha) and returns per Re invested (Rs 2.21).