Effects of Biomethanated Spentwash on Soil Properties, Nutrient Availability, Uptake, and Yield of Soybean-Wheat Sequence on Inceptisol

摘要

The research aimed to study the effect of presown application of primary biomethanated spentwash (PBSW) on soil properties, nutrient availability, uptake and yield of soybean-wheat sequence on Inceptisol. The field experiment with randomised block design was initiated during 2007-8 and present observation was recorded during 2009-10 and 2010-11.The five treatments were, recommended dose (RD) of NPK (T-1), 100% RD of N through PBSW without (T-2) and with P chemical fertilizer (T-3), 50 and 25% RD of N through PBSW + remaining N and P through chemical fertilizers (T-4,T-5), respectively. The results revealed that the soil physical properties and microbial populations were improved in T-2 and T-3. The lowest soil pH and pHs were observed in T-2. The soil electrical conductivity, organic carbon, exchangeable sodium percentage and sodium adsorption ratio of soil extracts and available K were increased with the increase in PBSW as compared to RD-NPK. The soil available N and P were decreased as PBSW increased at all the soil depths. The greatest yields and total N,P,K uptake of soybean and wheat were observed in T-5.