English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/165194
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Low-pressure sprinkler irrigation in maize: Differences in water distribution above and below the crop canopy

AuthorsZapata Ruiz, Nery ; Robles Rovelo, Octavio; Playán Jubillar, Enrique ; Paniagua Antón, Pilar ; Romano González, César; Salvador Esteban, Raquel ; Montoya Sevilla, Francisco
Irrigation uniformity
Wind drift and evaporation losses
Issue DateApr-2018
CitationZapata N, Robles O, Playán E, Paniagua P, Romano C, Salvador R, Montoya F. Low-pressure sprinkler irrigation in maize: Differences in water distribution above and below the crop canopy. Agricultural Water Management 203: 353-365 (2018)
AbstractReducing the working pressure at the sprinkler nozzles is one of the alternatives to reduce energy requirements in solid-set sprinkler irrigation systems. Previous studies reported ≈10% lower seasonal Christiansen uniformity coefficient (CUC) for low-pressure treatments than for standard treatments, but no differences in maize yield. This research analyses the effect of maize canopy water partitioning on irrigation performance indexes (CUC and wind drift and evaporation losses, WDEL). Three irrigation treatments were considered, based on the working pressure: 1) A standard brass impact sprinkler operating at a pressure of 300 kPa (CIS300); 2) A standard brass impact sprinkler operating at a pressure of 200 kPa (CIS200); and 3) A modified plastic impact sprinkler (with a deflecting plate attached to the drive arm) operating at a pressure of 200 kPa (DPIS200). Irrigation performance was measured using a catch-can network located above the maize canopy (CUCac, WDELac) along the whole crop season and using stemflow and throughfall devices below the maize canopy (CUCbc, WDELbc) in eight irrigation events. Maize growth, yield and its components were measured. Under low-wind and fully developed canopy conditions (a frequent situation for maize irrigation), CUCbc resulted higher than CUCac for the low-pressure treatments, while the opposite was observed for the standard pressure treatment. Maize canopy partitioning reduces the differences in irrigation performance indexes between pressure treatments, explaining why there are no differences in grain yield between them. Caution should be used when measuring sprinkler irrigation performance above tall canopies, since the elevation of the catch-cans and the crop canopy partitioning affect performance estimations.
Description51 Pags.- 4 Tabls.- 12 Figs. The definitive version is available at: https://www.sciencedirect.com/science/journal/03783774
Publisher version (URL)https://doi.org/10.1016/j.agwat.2018.03.025
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
ZapataN_AgricWatManag2_2018.pdf1,12 MBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.