干旱区生态环境知识资源中心(Arid): Balancing crop water requirements through supplemental irrigation under rainfed agriculture in a semi-arid environment

Arid

DOI	10.1016/j.heliyon.2023.e18727
	Balancing crop water requirements through supplemental irrigation under rainfed agriculture in a semi-arid environment
	Gebremedhin, Teferi; Haile, Gebremedhin Gebremeskel; Gebremicael, T. G.; Libsekal, Hintsa; Reda, Kidane Welde
通讯作者	Haile, GG
来源期刊	HELIYON
EISSN	2405-8440
出版年	2023
卷号	9 期号:8
英文摘要	Rainfed farming is a dominant agricultural system in Tigray, Ethiopia. However, rainfall is characterized by short duration, intense and erratic subjected to late-onset and early cessation, suggesting a pressing need for Supplemental Irrigation (SI) to fill the crop water demand. Understanding the effects of SI during rainfall late-onset, early cessation, or both, along with their underlying causes, is a critical knowledge gap globally. Although wheat is one of the principal food crops in Tigray, it is subjected to moisture stress during critical growth stages, limiting its potential productivity. Studies specifically related to impacts due to the late-onset of rainfall on wheat are non-existent. Here, we investigated the agrometeorological characteristics of rainfall variability, onset, cessation, and length of the growing season to evaluate the use of SI for balancing the moisture stress in rainfed farming. Meanwhile, using an on-farm experiment, we also evaluated double-season (2017 and 2018) SI application during late-onset (Pre), early cessation (Post), and its combined effects (Pre + Post) on yield and water productivity (WP) of wheat. Yield and WP were significantly (P < 0.05) affected by SI application with higher grain yield (3298 kg/ha) and WP (0.538 kg/m3) obtained from applying Pre + Post. Applying Pre + Post has increased grain yield, biomass, and WP of wheat by 45.6, 27.7, and 21.5% over Rain-fed farming, respectively. Thus, balancing crop water requirements using SI during inadequate rainfall distribution is key for improving WP and wheat production in semi-arid environments. Particularly, the application of SI both during the late-onset and early cessation of rainfall is suggested for greater wheat productivity in semi-arid regions.
英文关键词	Early cessation Late-onset Rainfed agriculture Supplemental irrigation Ethiopia
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:001051636900001
WOS关键词	USE EFFICIENCY ; WINTER-WHEAT ; YIELD ; PRODUCTIVITY ; SENESCENCE ; SEASON ; ONSET ; AREAS ; ONION ; SOIL
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/2XILL650/396823
推荐引用方式 GB/T 7714	Gebremedhin, Teferi,Haile, Gebremedhin Gebremeskel,Gebremicael, T. G.,et al. Balancing crop water requirements through supplemental irrigation under rainfed agriculture in a semi-arid environment[J],2023,9(8).
APA	Gebremedhin, Teferi,Haile, Gebremedhin Gebremeskel,Gebremicael, T. G.,Libsekal, Hintsa,&Reda, Kidane Welde.(2023).Balancing crop water requirements through supplemental irrigation under rainfed agriculture in a semi-arid environment.HELIYON,9(8).
MLA	Gebremedhin, Teferi,et al."Balancing crop water requirements through supplemental irrigation under rainfed agriculture in a semi-arid environment".HELIYON 9.8(2023).