Crop productivity,soil health,and energy dynamics of Indian Himalayan intensified organic maize-based systems
作者机构：ICAR-National Organic Farming Research InstituteGangtokSikkim737102India Division of AgronomyICAR-Indian Agricultural Research InstituteNew Delhi110012India ICAR Research Complex for NEH RegionTripura CentreLembucherraTripura799210India ICAR-National Bureau of Plant Genetic ResourcesNew Delhi110012India
出 版 物：《International Soil and Water Conservation Research》 (国际水土保持研究（英文）)
年 卷 期：2021年第9卷第2期
页 面：260-270页
核心收录：
学科分类：09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 090301[农学-土壤学]
基 金：ICAR Research Complex for North Eastern Hill Region Umiam Meghalaya
主 题：Crop intensification Energy productivity Gross return Soil health Water productivity
摘 要：The sustainability of prevailing maize-fallow system in rainfed ecosystems of the Eastern Himalayan region(EHR)of India is often questioned due to poor economic return and negative impact on soil ***,the six cropping systems,maize-fallow(M-F),maize t cowpea-rapeseed(M t C-Rs),maize t cowpea-buckwheat(M t C-Bw),maize t cowpea-barley(M t CeB),maize t cowpea-garden pea(M t C-GP)and maize t cowpeaerajmash(M t C-R)in the main plot and three soil moisture conservation measures,no-mulch(NM),maize stover mulch(MSM)and maize stover t weed biomass mulch(MSM t WBM)in sub-plot were evaluated for four consecutive years(2014-18)at a Research Farm in fixed plot *** indicated that cowpea co-culture with maize and inclusion of winter crop increased maize yield by 6.2e23.5%over *** the systems,the M t C-GP recorded the highest crop *** residual effect of MSM t WBM increased maize grain yield by 19.1%over *** of maize t cowpea-winter crops significantly improved the available N(3.2e12.9%),P(3.6 e12.7%),K(1.9e26.3%),organic carbon(9.2e16.8%),microbial biomass carbon-MBC(15.2e43.9%)and dehydrogenases-DHA(17.2e42.3%)in soil at 0e15 cm depth as compared to *** M t C-GP also recorded maximum net return(US$2460 ha1),benefit:cost(B:C)ratio(2.86)and energy use efficiency(7.9%).The MSM t WBM recorded higher net return(US$1680 ha1)and B:C ratio(2.46)over ***,cowpea t maize-garden pea(M t C-GP)along with the application of MSM t WBM is a sustainable production practice to intensify the organically managed maize-fallow system in rainfed regions of the EHR of India and other similar ecosystems.
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