Influence of Long Term Fertilization on Yield and Active Pools of Soil Organic Carbon in an Typic Haplustepts under Groundnut-Wheat Cropping Sequence

Soil microbial properties influenced with long term application of manures and fertilizers

“…However, in organic manures treatments, the peak stage of organic matter decomposition was not achieved during crop season due to lack of mineral N and P. Higher decomposition rate of organic matter was still going on and thus the DHA was higher at the end of cropping season as compared to combined application of organic manures and NP fertilizers. This type of results are in conformity with the outcomes of several studies (Basak et al 2017, Jia et al 2018, Tripura et al 2018.…”

“…Therefore, a significant increase in MBC and MBN content in soil was observed with the application of organic manures compared to the application of chemical fertilizers. The supply of readily hydrolysable C and additional supply of N due to organic manure application resulted in higher microbial activity and their biomass C and N (Tripura et al 2018). As MBC is controlled by availability of C content, addition of manures could have provided more labile C substances needed for maintenance of the larger MBC (Dhram Prakash et al 2016).…”

“…The integrated application of manures and fertilizers (INM) enhanced the MBC and MBN content over organic manures applied alone. The higher MBC content under INM might be due to presence of steady source of readily metabolizable C and better crop yield resulted in higher root biomass and exudates (Liu et al 2016, Ge et al 2017, Tripura et al 2018). Among the organic manures, the MBC content in soil followed the order pressmud>poultry manure> FYM, while MBN content in soil followed the order pressmud>FYM>poultry manure.…”