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DOI	10.1007/s10705-022-10198-1
	Soil profile carbon, nitrogen, and crop yields affected by cover crops in semiarid regions
	Acharya, Pramod; Ghimire, Rajan; Cho, Youngkoo; Thapa, Vesh R.; Sainju, Upendra M.
通讯作者	Ghimire, R (corresponding author)，New Mexico State Univ, Agr Sci Ctr, 2346 State Rd 288, Clovis, NM 88101 USA.
来源期刊	NUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN	1385-1314
EISSN	1573-0867
出版年	2022-02
英文摘要	Cover crops are increasingly adopted to improve soil health in arid and semiarid regions, yet their effects on soil profile organic carbon (C) and nitrogen (N) and crop yield are inconsistent. We evaluated the cover crop effect on soil organic C (SOC) and N (SON) contents and water-filled pore space to a depth of 0.8 m and crop yield in a winter wheat (Triticum aestivum L.)-sorghum (Sorghum bicolor L. Moench)-fallow rotation under limited-irrigation conditions. Cover crop treatments were fallow (no cover crop), pea (Pisum sativum L.), oat (Avena sativa L.), canola (Brassica napus L.), pea-canola mixture, oat-pea mixture, pea-oat-canola mixture, and a six-species mixture including pea, oat, canola, hairy vetch (Vicia villosa Roth), forage radish (Raphanus sativus L.), and barley (Hordeum vulgare L.). Five years of cover cropping (2016-2020) did not affect SOC storage. Soil organic N at equivalent soil mass (ESM) layer 0-2500 Mg ha(-1) was 8-14% greater in fallow than other treatments, except pea and oat-pea mixture. The fallow treatment also had 54-156% and 11-72% higher inorganic N content than cover crop treatments at ESM layers of 2500-5000 and 5000-7500 Mg ha(-1), respectively. Sorghum grain yield was 33-97% higher following fallow and oat as cover crop than other treatments in 2020. Although there was a variation in crop yield responses, cover cropping largely did not affect soil profile C and N contents under a limited-irrigation semiarid cropping system.
英文关键词	Limited irrigation No-tillage Soil organic matter Equivalent soil mass Semiarid soils Winter wheat-sorghum-fallow
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000750698200001
WOS关键词	ORGANIC-CARBON ; LONG-TERM ; IRRIGATION ; SEQUESTRATION ; CONSERVATION ; IMPACTS ; FALLOW ; HEALTH ; MATTER
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377346
作者单位	[Acharya, Pramod; Ghimire, Rajan; Thapa, Vesh R.] New Mexico State Univ, Dept Plant & Environm Sci, MSC 3Q,POB 30003, Las Cruces, NM 88003 USA; [Ghimire, Rajan] New Mexico State Univ, Agr Sci Ctr, 2346 State Rd 288, Clovis, NM 88101 USA; [Cho, Youngkoo] Eastern New Mexico Univ, Dept Biol, 1500 S Ave K, Portales, NM 88130 USA; [Sainju, Upendra M.] ARS, Northern Plains Agr Res Lab, USDA, 1500 North Cent Ave, Sidney, MT 59270 USA
推荐引用方式 GB/T 7714	Acharya, Pramod,Ghimire, Rajan,Cho, Youngkoo,et al. Soil profile carbon, nitrogen, and crop yields affected by cover crops in semiarid regions[J],2022.
APA	Acharya, Pramod,Ghimire, Rajan,Cho, Youngkoo,Thapa, Vesh R.,&Sainju, Upendra M..(2022).Soil profile carbon, nitrogen, and crop yields affected by cover crops in semiarid regions.NUTRIENT CYCLING IN AGROECOSYSTEMS.
MLA	Acharya, Pramod,et al."Soil profile carbon, nitrogen, and crop yields affected by cover crops in semiarid regions".NUTRIENT CYCLING IN AGROECOSYSTEMS (2022).