Effect of nutrient management practices on soybean - chickpea cropping system for improving seed yield, quality and soil biological health under rainfed condition

Singh,A.B.; Saha,J.K.; Ghosh,P.K.

Indian Journal of Agricultural Sciences 78(6): 485-489

2008


ISSN/ISBN: 0019-5022
Accession: 031100715

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Abstract
Field experiments were conducted during 2001-03 on rainfed soyabean (Glycine max)-chickpea (Cicer arietinum)-based cropping system on farmers' fields at Bhopal district, Madhya Pradesh, India to evaluate nutrient management packages on yield and quality of seeds. Four nutrient management practices, farmers practice, 100%, recommended dose of fertilizer+farmyard manure (FYM) at 2 t/ha, 150% recommended dose of fertilizer+FYM at 2 t/ha were evaluated. Significantly higher seed yield of soyabean was recorded where 100% recommended dose of fertilizer+FYM at 2 t/ha was applied. Nutritionally important constituents, oil (19.61%), protein (37.09%), minerals (5.52%), methionine (1.74 g/16 g N) and cysteine (1.63 g/16 g N) contents, were also highest with this treatment. The lowest values of oil (16.46%), protein (34.93%), minerals (5.42%), methionine (1.59 g/16 g N) and cysteine (1.49 g/16 g N) were recorded in the farmers' practice of nutrient management. In the case of chickpea, maximum protein (19.7%), methionine (1.69 g/16 g N) and cysteine (1.68 g/16 g N) contents were recorded in chickpea where 50% recommended dose of fertilizer was applied to this crop and 100% recommended dose of fertilizer+FYM was applied to the previous crop. This treatment also resulted in significant improvement in postharvest soil quality as evidenced by increased organic matter content, N, P, K, as well as activities of soil enzymes, including dehydrogenase, and acid and alkaline phosphatases. Data indicated that integrated nutrient management treatment (100% recommended dose of fertilizer+FYM at 2 t/ha to soyabean and 50% recommended dose of fertilizer to chickpea) resulted the maximum net returns in cropping system (Rs. 14 263/ha). It is concluded that integrated nutrient management practices significantly augment yield, seed quality and biological health of soil as well as income over the farmers' practice.