干旱区生态环境知识资源中心(Arid): Water distribution analysis of a linear move irrigator by aerial survey and RTK-GNSS monitors

Arid

DOI	10.1007/s11119-021-09866-z
	Water distribution analysis of a linear move irrigator by aerial survey and RTK-GNSS monitors
	Meron, Moshe; Chen, Assaf; Rabinovitz, Onn; Traub, Eliezer; Levine-Orlov, Valerie; Marchaim, Uri
通讯作者	Meron, M (corresponding author), MIGAL Galilee Res Inst, POB 831, IL-11016 Kiryat Shmona, Israel.
来源期刊	PRECISION AGRICULTURE
ISSN	1385-2256
EISSN	1573-1618
出版年	2021-11
英文摘要	Irrigation uniformity in a semi-arid climate remains one of the main factors of water use efficiency (WUE) regardless of the level of agronomic advance, since over- and under-watered parts of the field represent wasted water or wasted yield at a given irrigation dose. The aim of this study was to analyze the underlying reasons for low WUE of linear move irrigators (LMI), detected by remotely sensed crop biomass maps in the Hula Valley, Israel. Head and tail towers were equipped with high-accuracy GNSS devices, recording their movements at 0.015 m accuracy. Periodic aerial surveys, run with multi-copter mounted visible and thermal cameras, showed stable and persistent over- and under-irrigation spatial patterns. Tower movement analysis revealed a zigzag pattern, where each tower lags behind and then catches up intermittently; over-irrigating during lags, under-irrigating during runs at the same spatial pattern over time, explaining the biomass variability. Deviations from the average at head and tail edge towers were in the 45-50% range of over-watering and the - 30% range of under-watering, and around +/- 13%, at the mid part of the field. Yield sampling found 15% (pF > 0.069) yield loss. Sunken and winding wheel tracks observed in the field may have caused that movement pattern. Low WUE means waste of water that has a severe economic impact, especially in water scarce regions. Since water shortages are expected with climate change in many agricultural regions around the world, it is imperative to improve LMI machine movement uniformity, or to enable compensating irrigation control in order to solve water waste issues.
英文关键词	Water use efficiency Irrigation uniformity Variable rate irrigation
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000717948000001
WOS关键词	THERMAL IMAGERY ; UNIFORMITY ; PERFORMANCE ; SYSTEM ; RED
WOS类目	Agriculture, Multidisciplinary
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/2XILL650/367672
作者单位	[Meron, Moshe; Chen, Assaf; Levine-Orlov, Valerie; Marchaim, Uri] MIGAL Galilee Res Inst, POB 831, IL-11016 Kiryat Shmona, Israel; [Rabinovitz, Onn] Northern R&D, POB 831, IL-11016 Kiryat Shmona, Israel; [Traub, Eliezer] E Traub Co, Ramat Gan, Israel
推荐引用方式 GB/T 7714	Meron, Moshe,Chen, Assaf,Rabinovitz, Onn,et al. Water distribution analysis of a linear move irrigator by aerial survey and RTK-GNSS monitors[J],2021.
APA	Meron, Moshe,Chen, Assaf,Rabinovitz, Onn,Traub, Eliezer,Levine-Orlov, Valerie,&Marchaim, Uri.(2021).Water distribution analysis of a linear move irrigator by aerial survey and RTK-GNSS monitors.PRECISION AGRICULTURE.
MLA	Meron, Moshe,et al."Water distribution analysis of a linear move irrigator by aerial survey and RTK-GNSS monitors".PRECISION AGRICULTURE (2021).