干旱区生态环境知识资源中心(Arid): Effect of mineral N fertilizer and organic input on maize yield and soil water content for assessing optimal N and irrigation rates in Central Kenya

Arid

DOI	10.1016/j.fcr.2021.108420
	Effect of mineral N fertilizer and organic input on maize yield and soil water content for assessing optimal N and irrigation rates in Central Kenya
	Aluoch, Stephen Okoth; Li, Zhuoting; Li, Xiaoxin; Hu, Chunsheng; Mburu, David M.; Yang, Jingyi; Xu, Qiangsheng; Yang, Yuanzheng; Su, Hongxin
通讯作者	Li, ZT (corresponding author)，Nanning Normal Univ, Key Lab Environm Change & Resources Use Beibu Gul, Minist Educ, 175 East Mingxiu Rd, Nanning 530001, Peoples R China.
来源期刊	FIELD CROPS RESEARCH
ISSN	0378-4290
EISSN	1872-6852
出版年	2022
卷号	277
英文摘要	Maize (Zea mays L.) is an important food crop in Kenya, while low and erratic rainfall, and low nutrient input mainly result in low maize yield. This study were to assess optimal nutrient and irrigation management practice for maize in central Kenya based on field experiment combined with modeling simulation. On-farm experiment with four treatments including no fertilizer (N0), N applied at dose of 100 kg ha(-1) only in the form of a chemical fertilizer (N100) or combined with animal manure (N100M) or straw (N100S) has been conducting since 2013 in central Kenya. The Decision Support System for Agro-technology Transfer-Cropping System Model (DSSAT-CSM) was firstly calibrated under the relative optimal treatment N100M, and it was then evaluated for the rest three treatments for 6 maize growing seasons from 2014 to 2018. The responses of grain yield to different irrigation and fertilizer regimes were simulated using the calibrated DSSAT-CSM. The combination of fertilizer and manure (N100M) resulted in the highest yield and that of fertilizer and straw (N100S), in the highest level of soil water content in each soil layer. The model (DSSAT-CSM) successfully predicted both grain yield (normalized root mean square error, or nRMSE, of 21-37% and the index of agreement, or d, of 0.89-0.93) and changes in water content of each soil layer (nRMSE < 20% and d > 0.70) in all treatments except N100S. The yield was most sensitive to any deficit in soil water content (dry spells) at the beginning of grain-filling stage, and the best regime for high yield, high water-use efficiency, and high agronomic efficiency comprised irrigation at 50-70 mm during that stage combined with fertilizer N at 100-120 kg ha(-1). The estimated magnitude yield gain with respect to optimal nutrition and irrigation ranged from 2 to 4 t ha(-1) in different crop seasons. Optimal application of irrigation at the sensitive stage, fertilizer N, animal manure, and straw mulching holds great potential as an integrated farming practice for high grain yield and for efficient use of resources in maize cultivation in semi-arid parts of Kenya.
英文关键词	Maize grain yield Soil water content Fertilizer regime DSSAT-CSM Irrigation strategy
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000742734300007
WOS关键词	USE EFFICIENCY ; AGRICULTURAL SYSTEMS ; NITROGEN MANAGEMENT ; SEMIARID REGION ; SOUTHERN AFRICA ; CROP MODELS ; DSSAT-CSM ; WHEAT ; PRODUCTIVITY ; PERFORMANCE
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/2XILL650/376262
作者单位	[Aluoch, Stephen Okoth; Li, Xiaoxin; Hu, Chunsheng] Chinese Acad Sci, Ctr Agr Resources Res, Inst Genet & Dev Biol, Key Lab Agr Water Resources, 286 Huaizhong Rd, Shijiazhuang 050021, Hebei, Peoples R China; [Li, Zhuoting; Xu, Qiangsheng; Yang, Yuanzheng; Su, Hongxin] Nanning Normal Univ, Key Lab Environm Change & Resources Use Beibu Gul, Minist Educ, 175 East Mingxiu Rd, Nanning 530001, Peoples R China; [Li, Zhuoting; Xu, Qiangsheng; Yang, Yuanzheng; Su, Hongxin] Nanning Normal Univ, Guangxi Key Lab Earth Surface Proc & Intelligent, 175 East Mingxiu Rd, Nanning 530001, Peoples R China; [Mburu, David M.] Jomo Kenyatta Univ Agr & Technol, Nairobi 6200000100, Kenya; [Yang, Jingyi] Agr & Agri Food Canada, Harrow Res & Dev Ctr, 2585 Cty Rd 20, Harrow, ON N0R 1G0, Canada
推荐引用方式 GB/T 7714	Aluoch, Stephen Okoth,Li, Zhuoting,Li, Xiaoxin,et al. Effect of mineral N fertilizer and organic input on maize yield and soil water content for assessing optimal N and irrigation rates in Central Kenya[J],2022,277.
APA	Aluoch, Stephen Okoth.,Li, Zhuoting.,Li, Xiaoxin.,Hu, Chunsheng.,Mburu, David M..,...&Su, Hongxin.(2022).Effect of mineral N fertilizer and organic input on maize yield and soil water content for assessing optimal N and irrigation rates in Central Kenya.FIELD CROPS RESEARCH,277.
MLA	Aluoch, Stephen Okoth,et al."Effect of mineral N fertilizer and organic input on maize yield and soil water content for assessing optimal N and irrigation rates in Central Kenya".FIELD CROPS RESEARCH 277(2022).