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.