Production potential, nutrient uptake and economics of Indian mustard (Brassica juncea) under integrated nutrient management practices

Abstract

A field experiment was conducted during the winter (rabi) seasons of 2009-10 and 2010-11 to study the production potential, nutrient uptake and economics of Indian mustard (Brassica juncea L.) under eight treatments of organic sources and three levels of inorganic nitrogen for integrated nutrient management practices. The organic sources comprising combined application of 5.0 tonnes/ha FYM along with PSM and Azospirillum or PSM being at par produced significantly higher yield attributes, yield, economics and nutrient uptake of mustard over sole application of 2.5 tonnes FYM/ha. Increasing application of inorganic nitrogen fertilizer from 0 to 80 kg N/ha significantly increased yield attributes, yield, economics and nutrient uptake of mustard. On an average, increase in seed yield due to the application of 80 kg N/ha was to the tune of 7.27 and 22.27 per cent over 40 and 0 kg N/ha, respectively. There was build up of available N, P, K and S in the soil after cropping. Integrated use of 5.0 tonnes FYM/ha along with PSM + Azospirillum and 80 kg N/ha is necessary for getting higher seed yield and is the most remunerative and effective integrated approach of Indian mustard after the completion of two years of experimentation.