RESUMENEl cable de fibra óptica y la técnica Distributed Temperature Sensing puede ser una opción en la programación del riego de jardines para mejorar, no sólo la eficiencia en el uso del agua, sino también, por ende, el de fertilizantes y ahorrar energía. Esta metodología permite estimar en continuo la temperatura hasta 12,5 cm y temporal de 1 s. Posteriormente, se relaciona la temperatura con el contenido de agua en el suelo obteniéndose errores de hasta ± 2 %. En este trabajo se aplicó esta técnica al riego por aspersión de un área ajardinada de la ETSI de Agrónomos de Madrid. Los resultados son prometedores dado que permiten conocer la variabilidad espacial de la distribución del agua en el suelo y relacionarla con la distribución del agua por la unidad de riego para elaborar criterios de riego que mejoren la eficiencia de todos los recursos. ABSTRACTThe fiber optic cable and the technique Distribute Temperature Sensing show potential to be used for the irrigation programming in green areas, not only to improve the water use efficiency but, the use of fertilizers and saving energy as well. This methodology can measure temperature along the cable, every 12.5 cm, and every second. Then, temperature is correlated with soil water content with up to ± 2 % accuracy. This study was performed in a green area located at the ETSI de Agrónomos de Madrid that was irrigated by sprinkler irrigation. The results are promising since the water spatial variability within the soil is known and it can be correlated with the water distribution in the irrigation unit to elaborate better irrigation strategies in the garden.
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