Yield trends, and changes in soil organic-C and available NPK in a long-term rice–wheat system under integrated use of manures and fertilisers

Effect of INM on Soil Carbon Pools, Soil Quality and Sustainability in Rice-Brown Sarson Cropping System of Kashmir Valley

“…However, application of fertilizers and manures resulted in significant improvement in the buildup of the available N content of subsurface soil. So, it is clear that application of organic manures in conjunction with chemical fertilizers increased the available N in soil is attributed to the increase in total SOC that might have been partially due to a slow release of N from straw and manure as suggested by Yadav et al, (2000), Gami et al, (2001) and Bhandari et al, (2002). Farmyard manure and straw is known to stimulate biological N 2 fixation in the soil, which may also have been responsible for the increase in soil N (Ladha et al, 1989) over NPK treatment, apart from FYM's own N contribution.…”

Effect of Mixed Cultivation with Green Manure Crops and Liquid Pig Manure on Rice Growth

“…함유하고 있고, 토양의 물리․화학적 개선효과 및 토양 중 생 물상의 활성증진에 효과가 있다고 여러 차례 보고된 바 있다 (Choudhary et al, 1996;Jeon et al, 2003;Kwon et al, 2010;Park et al, 2001;Yadav et al, 2000).…”

Effect of Integrated Nutrient Management on Growth and Development Stages of Rice under Rice – Wheat Ecosystem

“…The combination of poor soil fertility and inadequate, unbalanced, and inefficient use of fertilizers contributes much to this problem (Yadav et al, 2000;Dwivedi et al, 2001). …”