干旱区生态环境知识资源中心(Arid): Implications of cover crop planting and termination timing on rainfed maize production in semi-arid cropping systems

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DOI	10.1016/j.fcr.2021.108251
	Implications of cover crop planting and termination timing on rainfed maize production in semi-arid cropping systems
	Rosa, Alexandre T.; Creech, Cody F.; Elmore, Roger W.; Rudnick, Daran R.; Lindquist, John L.; Fudolig, Miguel; Butts, Liberty; Werle, Rodrigo
通讯作者	Rosa, AT (corresponding author), Univ Nebraska, Dept Agron & Hort, 202 Keim Hall, Lincoln, NE 68583 USA.
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2021
卷号	271
英文摘要	Despite the potential to increase soil organic matter, cycle soil nutrients, and suppress weeds, there is a concern that cover crops (CCs) soil water use negatively impacts subsequent crops in water-limited environments. Cover crop management practices such as planting and termination timing may mitigate the detrimental impacts of CCs in semi-arid cropping systems. To determine the effects of CCs under water-limited environments, we evaluated the total CC biomass produced in the fall and spring, soil water content during the subsequent maize growing season, weed density and biomass, crop residue, and soil nutrients at the maize V6 development stage, and maize productivity. The experiment was conducted under a wheat-maize-fallow rotation at two sites (Grant and North Platte, NE) during 2016-2017 and 2017-2018. Treatments consisted of three planting timings after winter wheat harvest and three CC termination timings and fallow (no CCs) before maize establishment. Planting CCs shortly after winter wheat harvest increased CC biomass in the fall and early spring compared to late planting. Cover crops terminated early in the spring reduced weed biomass (-70 %), while CCs terminated late in the spring reduced both weed density (-56 %) and biomass (-82 %) compared to fallow. Due to above-normal precipitation during the experiment, soil water measured at 0-20 cm soil depth was impacted by CCs only at Grant 2016-2017. Cover crops terminated late in the spring increased crop residue biomass but decreased total nitrogen at 0-10 cm soil depth by 17 %, and decreased soil nitrate at the 10-20 cm soil depth up to 26 % compared to fallow. Cover crops planted late in the summer (August) and terminated late in the spring (May) had the most detrimental impact on maize grain yield. Late termination of CCs in the spring reduced corn grain yield by up to 20 % compared to fallow. Despite enhanced weed suppression and crop residue, CCs decreased soil nitrogen and maize grain yield, especially when terminated late in the spring. Producers in semi-arid regions of the Great Plains willing to incorporate CCs should use caution when selecting management strategies for their CCs to minimize maize grain yield and economic losses.
英文关键词	Cover crops Semi-arid Maize Soil water Haney test Multivariate analysis
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000687699100008
WOS关键词	SOIL-WATER CONTENT ; WEED EMERGENCE ; MANAGEMENT ; FALLOW ; ALLELOPATHY ; MIXTURES ; TILLAGE ; CARBON ; YIELD ; MULCH
WOS类目	Agronomy
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/2XILL650/363234
作者单位	[Rosa, Alexandre T.; Creech, Cody F.; Elmore, Roger W.; Lindquist, John L.; Butts, Liberty] Univ Nebraska, Dept Agron & Hort, 202 Keim Hall, Lincoln, NE 68583 USA; [Rudnick, Daran R.] Univ Nebraska, Biol Syst Engn Dept, 247 LW Chase Hall, Lincoln, NE 68583 USA; [Fudolig, Miguel] Univ Nebraska, Dept Stat, 340 Hardin Hall North Wing, Lincoln, NE 68583 USA; [Werle, Rodrigo] Univ Wisconsin, Dept Agron, 356 Moore Hall, Madison, WI 53706 USA
推荐引用方式 GB/T 7714	Rosa, Alexandre T.,Creech, Cody F.,Elmore, Roger W.,et al. Implications of cover crop planting and termination timing on rainfed maize production in semi-arid cropping systems[J],2021,271.
APA	Rosa, Alexandre T..,Creech, Cody F..,Elmore, Roger W..,Rudnick, Daran R..,Lindquist, John L..,...&Werle, Rodrigo.(2021).Implications of cover crop planting and termination timing on rainfed maize production in semi-arid cropping systems.FIELD CROPS RESEARCH,271.
MLA	Rosa, Alexandre T.,et al."Implications of cover crop planting and termination timing on rainfed maize production in semi-arid cropping systems".FIELD CROPS RESEARCH 271(2021).