Use of RPAS for precision evapotranspiration in rice fields to reduce water consumption
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| المؤلفون: | , , , , |
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| التنسيق: | artículo original |
| الحالة: | Versión publicada |
| تاريخ النشر: | 2024 |
| الوصف: | Introduction. The estimation of crop evapotranspiration (ETc) allows knowing the water requirements of the crop, which helps to propose water-saving irrigation techniques. Aim. Use Remotely Piloted Aircraft System (RPAs) for greater precision of evapotranspiration in rice fields to reduce water consumption, Materials and methods. The distribution of plots followed a completely randomized block design with a factorial structure of two experiments, flooded irrigation (E1) and controlled dry irrigation (E2), with three varieties of rice (IR43, IR71706, Sahod Ulan 12) in the Area. Experimental Irrigation (AER) of the Unalm. Eight flights of an RPAS were carried out, distributed between the tillering and cotton knitting stages, in January and February 2019. Results. The combined analysis of treatments with analysis of variance and Duncan's test with p < 0.05 revealed a significant difference in ETc between E1 and E2; However, no significant difference was found between rice varieties. Maximum values of ETc and yield were obtained for E1 of 4.50 (mm/d), 10389 (Kg/ha) and for E2 of 3.7 (mm/d), 9710 Kg/ha), respectively. Conclusions. The use of a remotely piloted aircraft system allowed for improved temporal and spatial resolution of multispectral and thermal images to achieve greater precision in crop evapotranspiration (ETc) under two irrigation regimes. A 24% reduction in ETc was achieved under deficit irrigation, resulting in a water saving of 855 m3/ha. |
| البلد: | Portal de Revistas UCR |
| المؤسسة: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| اللغة: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/56529 |
| الوصول للمادة أونلاين: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/56529 |
| Access Level: | acceso abierto |
| كلمة مفتاحية: | rice paddies energy balance drone controlled dry irrigation arrozales balance de energía riego con secas controladas |