Arid
DOI10.1007/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
Corresponding AuthorMeron, M (corresponding author), MIGAL Galilee Res Inst, POB 831, IL-11016 Kiryat Shmona, Israel.
JournalPRECISION AGRICULTURE
ISSN1385-2256
EISSN1573-1618
Year Published2021-11
Abstract in EnglishIrrigation 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.
Keyword in EnglishWater use efficiency Irrigation uniformity Variable rate irrigation
SubtypeArticle ; Early Access
Language英语
Indexed BySCI-E
WOS IDWOS:000717948000001
WOS KeywordTHERMAL IMAGERY ; UNIFORMITY ; PERFORMANCE ; SYSTEM ; RED
WOS SubjectAgriculture, Multidisciplinary
WOS Research AreaAgriculture
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/367672
Affiliation[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
Recommended Citation
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).
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