Influence of Biomethanated Spentwash and Chemical Fertilizers on Productivity and Quality of Soybean-Wheat Cropping Sequence

Abstract

A field experiment was conducted on effect of one time controlled application of primary treated biomethanated spentwash (PBSW) and chemical fertilizers on yield and quality of soybean -wheat cropping sequence on Inceptisol. The field experiment was though initiated during 2007–08 observations were recorded during third (2009–10) and fourth years (2010–11) of experimentation. The experiment was laid out in a RBD with five treatments viz., recommended dose (RD)-NPK, 100% RD of N through PBSW without P chemical fertilizer, 100% RD of N through PBSW+remaining P through chemical fertilizer, 50% RD of N through PBSW+remaining N and P through chemical fertilizers and 25% RD of N through PBSW+remaining N and P through chemical fertilizers with four replications. The higher oil and protein yield of soybean was observed in 100% RD-NPK and 25% RD of N through PBSW+remaining N and P through chemical fertilizers, respectively. Lower doses of PBSW @ 25% RD of N through PBSW+remaining N and P through chemical fertilizers improved the lysine, methionine and tryptophan content of soybean and protein, dry gluten, carbohydrate and net protein utilization of wheat. Application of 25% RD N-through PBSW well before sowing for soybean and wheat+remaining N and P through chemical fertilizers was increased grain yield and improved the quality parameters of soybean and wheat.