干旱区生态环境知识资源中心(Arid): Cover Crops for Resilience of a Limited-Irrigation Winter Wheat-Sorghum-Fallow Rotation: Soil Carbon, Nitrogen, and Sorghum Yield Responses

Arid

DOI	10.3390/agronomy11040762
	Cover Crops for Resilience of a Limited-Irrigation Winter Wheat-Sorghum-Fallow Rotation: Soil Carbon, Nitrogen, and Sorghum Yield Responses
	Thapa, Vesh R.; Ghimire, Rajan; Marsalis, Mark A.
通讯作者	Ghimire, R (corresponding author), New Mexico State Univ, Dept Plant & Environm Sci, Las Cruces, NM 80003 USA. ; Ghimire, R (corresponding author), New Mexico State Univ, Agr Sci Ctr, Clovis, NM 88101 USA.
来源期刊	AGRONOMY-BASEL
EISSN	2073-4395
出版年	2021
卷号	11 期号:4
英文摘要	Cover crops can improve soil health by maintaining soil organic carbon (SOC) and nitrogen (N) contents, yet their dynamics in relation to crop yield in a semi-arid cropping system are poorly understood. The main objective of this study was to evaluate the response of diverse winter cover crop species and their mixture on SOC and N fractions and their relationship with sorghum (Sorghum bicolor L. Moench) yield in a winter wheat (Triticum aestivum L.)-sorghum-fallow rotation with limited irrigation management. Cover cropping treatments included pea (Pisum sativum L.), oat (Avena sativa L.), canola (Brassica napus L.), and mixtures of pea+oat (POM), pea+canola (PCM), peat+oat+canola (POCM), and a six-species mixture (SSM) of pea+oat+canola+hairy vetch (Vicia villosa Roth)+forage radish (Raphanus sativus L.)+barley (Hordeum vulgare L.) as cover crops and a fallow. Soil samples were analyzed for residual inorganic N, potentially mineralizable carbon (PMC) and nitrogen (PMN), SOC, and total N. Response of labile inorganic N, PMC, and PMN varied with cover crop treatments. The SOC and total N contents did not differ among treatments but were 20% and 35% higher in 2020 than in 2019, respectively. Sorghum grain yield was 25% and 40% greater with oats than with PCM and canola cover crops in 2019, while it was 33-97% greater with fallow and oats than other treatments in 2020. Oat as a cover crop could improve the resilience of limited-irrigation cropping systems by increasing SOC, soil N, and crop yield in semi-arid regions.
英文关键词	soil health transition cover crops sorghum grain yield
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000642668900001
WOS类目	Agronomy ; Plant Sciences
WOS研究方向	Agriculture ; Plant Sciences
来源机构	New Mexico State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349398
作者单位	[Thapa, Vesh R.; Ghimire, Rajan] New Mexico State Univ, Dept Plant & Environm Sci, Las Cruces, NM 80003 USA; [Ghimire, Rajan] New Mexico State Univ, Agr Sci Ctr, Clovis, NM 88101 USA; [Marsalis, Mark A.] New Mexico State Univ, Agr Sci Ctr, Los Lunas, NM 87031 USA; [Marsalis, Mark A.] New Mexico State Univ, Dept Extens Plant Sci, Las Cruces, NM 80003 USA
推荐引用方式 GB/T 7714	Thapa, Vesh R.,Ghimire, Rajan,Marsalis, Mark A.. Cover Crops for Resilience of a Limited-Irrigation Winter Wheat-Sorghum-Fallow Rotation: Soil Carbon, Nitrogen, and Sorghum Yield Responses[J]. New Mexico State University,2021,11(4).
APA	Thapa, Vesh R.,Ghimire, Rajan,&Marsalis, Mark A..(2021).Cover Crops for Resilience of a Limited-Irrigation Winter Wheat-Sorghum-Fallow Rotation: Soil Carbon, Nitrogen, and Sorghum Yield Responses.AGRONOMY-BASEL,11(4).
MLA	Thapa, Vesh R.,et al."Cover Crops for Resilience of a Limited-Irrigation Winter Wheat-Sorghum-Fallow Rotation: Soil Carbon, Nitrogen, and Sorghum Yield Responses".AGRONOMY-BASEL 11.4(2021).