An avenue for replacement of chemical fertilization under rice-rice cropping pattern: Sustaining soil health and organic C pool via MSW-based vermicomposts     

Banashree Sahariah  Subhasish Das  Linee Goswami  Sarmistha Paul  Pradip Bhattacharyya 《Archives of Agronomy and Soil Science》2020,66(10):1449-1465

ABSTRACT

The impacts of Municipal solid wastes (MSW) vermicompost (VC) on soil-crop interface have rarely been studied. Hence, the influence of vermicompost on soil health and soil organic C (SOC) dynamics was assessed under intensive rice–rice cropping system. A 20–40% of the recommended N-fertilization was substituted by MSW-vermicompost for the crop. SOC storage, degree of humification, humic acid C, and fulvic acid C in soil gradually increased by 55–60% under NPK₆₀ + VC and NPK₈₀ + VC treatments in 2 years. The improvement in N-mineralization was spectacular in NPK₆₀ + VC (2.79 folds) and NPK₈₀ + VC (2.25 folds) treated soil. The carbon pool management index in soil was greatest under NPK₆₀ + VC (2.1) treatment followed by NPK₁₀₀ + VC (1.96) and NPK₈₀ + VC (1.87) treatments. Moreover, the crop biomass and grain yield increased under VC treatments. The correlation and regression statistics revealed that rice production was enhanced due to improvement of SOC pool and humified carbon fractions in soil. Finally, we recorded highest benefit-cost ratio under NPK₆₀ + VC (benefit/cost 5.55) followed by NPK₈₀ + VC (benefit/cost 5.44). The study indicated that MSW-vermicompost sustained soil microbial health and SOC balance, which significantly correlated with rice production.  相似文献   

A simple apparatus for measuring degradation of¹⁴C-labelled pesticides in soil     

K.P. Goswami  B.L. Koch 《Soil biology & biochemistry》1976,8(6):527-528

  相似文献   

Increasing trend of extreme rain events over India in a warming environment   总被引：7，自引：0，他引：7  

Goswami BN  Venugopal V  Sengupta D  Madhusoodanan MS  Xavier PK 《Science (New York, N.Y.)》2006,314(5804):1442-1445

Against a backdrop of rising global surface temperature, the stability of the Indian monsoon rainfall over the past century has been a puzzle. By using a daily rainfall data set, we show (i) significant rising trends in the frequency and the magnitude of extreme rain events and (ii) a significant decreasing trend in the frequency of moderate events over central India during the monsoon seasons from 1951 to 2000. The seasonal mean rainfall does not show a significant trend, because the contribution from increasing heavy events is offset by decreasing moderate events. A substantial increase in hazards related to heavy rain is expected over central India in the future.  相似文献