Irrigation-Advisor—A Decision Support System for Irrigation of Vegetable Crops
Climate change will intensify water scarcity, and therefore irrigation must be adapted to save water. Operational tools that provide watering recommendations to end-users are needed. This work presents a new tool, Irrigation-Advisor (IA), which is based on weather forecasts and is able to separat...
| Autores principales: | , , , , |
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| Formato: | article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2020
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.11939/6401 https://www.mdpi.com/2073-4441/11/11/2245 |
| Sumario: | Climate change will intensify water scarcity, and therefore irrigation must be adapted
to save water. Operational tools that provide watering recommendations to end-users are needed.
This work presents a new tool, Irrigation-Advisor (IA), which is based on weather forecasts and is
able to separately determine soil evaporation and crop transpiration, and thus is adaptable to a broad
range of agricultural situations. By calculating several statistical indicators, IA was tested against the
FAO-56 crop evapotranspiration (ETcFAO) methodology using local crop coe cients. Additionally,
IA recommendations were compared with current standard practices by experienced farmers (F).
Six field experiments with four widely cultivated species (endive, lettuce, muskmelon and potato)
were performed in Southeast Spain. Irrigation water applied, crop yield, aboveground biomass and
water productivity were determined. Crop water needs underestimations (5%–20%) were detected
when comparing IA against ETcFAO, although the index of agreement proved reasonable adjustments.
The IA recommendations led to water savings up to 13% when compared to F, except for lettuce, with a
31% surplus in irrigation when using IA. Crop yield was not compromised and water productivity
was increased by IA. Therefore, IA mimicked the farmers0 irrigation strategies fairly well without
deploying sensors on-site. Nevertheless, improvements are needed for increasing the accuracy of
IA estimations. |
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