干旱区生态环境知识资源中心(Arid): Reducing energy and carbon footprint in semi-arid irrigated cropping systems through crop diversification

Arid

DOI	10.1016/j.heliyon.2024.e27904
	Reducing energy and carbon footprint in semi-arid irrigated cropping systems through crop diversification
	Bista, Dabit; Sapkota, Sushil; Acharya, Pramod; Acharya, Ram; Ghimire, Rajan
通讯作者	Ghimire, R
来源期刊	HELIYON
EISSN	2405-8440
出版年	2024
卷号	10 期号:6
英文摘要	Energy and carbon (C) footprints of agricultural production practices have garnered high attention due to rising energy costs and increasing global warming. However, the contribution of conservation and regenerative farming practices, including cover cropping, on energy and C footprints have not yet been documented for cropping systems in arid and semi -arid regions. This study evaluated the energy and C footprint of cover crop integrated silage maize ( Zea mays L.) and sorghum ( Sorghum bicolor L. Moench) production systems in the semi -arid region of the southwestern US. The treatments were mixtures of winter cover crops: i) grasses and legumes (GL), ii) grasses, brassicas, and legumes (GBL), iii) grasses and brassicas (GB), and iv) no cover crops (NCC) control for each crop production system. Results showed cover crops had 24.1 - 24.5% greater energy input than NCC. In silage maize rotation, energy output was 17 - 22% greater in GBL and GL than in NCC. In silage sorghum rotation, the energy output was 15 - 24% greater in all cover crops than in NCC. The resulting net energy was 16 - 21% greater in GBL and GL than in NCC under silage maize, while it was 18 - 24% greater in GBL and GB than in NCC under silage sorghum. In the silage maize system, the C-footprint per kg yield was not different among treatments, whereas in silage sorghum, it was 58% greater in GBL than in NCC. The benefit-to-cost ratio was greater than one for all treatments, but the additional revenue through C credit programs could make cover cropping a more feasible and beneficial approach, improving economic and environmental sustainability while producing silage crops. While the C footprint was crop rotation specific, cover cropping should be encouraged over crop-fallow systems to producers in semi -arid environments to reduce energy usage and increase C-credit benefits. Clear national and state policy on the C credit program will also enhance economic and environmental benefits by adopting cover cropping and other regenerative farming practices.
英文关键词	Net energy efficiency Carbon footprint Cover cropping Cost-benefit ratio Carbon credit
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:001258337800001
WOS关键词	GREENHOUSE-GAS EMISSIONS ; COVER CROPS ; USE EFFICIENCY ; CORN-SILAGE ; SOIL ; TILLAGE ; NITROGEN ; CONSERVATION ; MITIGATION ; ROTATION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404019
推荐引用方式 GB/T 7714	Bista, Dabit,Sapkota, Sushil,Acharya, Pramod,et al. Reducing energy and carbon footprint in semi-arid irrigated cropping systems through crop diversification[J],2024,10(6).
APA	Bista, Dabit,Sapkota, Sushil,Acharya, Pramod,Acharya, Ram,&Ghimire, Rajan.(2024).Reducing energy and carbon footprint in semi-arid irrigated cropping systems through crop diversification.HELIYON,10(6).
MLA	Bista, Dabit,et al."Reducing energy and carbon footprint in semi-arid irrigated cropping systems through crop diversification".HELIYON 10.6(2024).