Use of RPAS for precision evapotranspiration in rice fields to reduce water consumption

 

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Библиографические подробности
Авторы: Quispe-Tito, David Junior, Ramos-Fernández, Lia, Pino-Vargas, Edwin, Quille-Mamani, Javier, Torres-Rua, Alfonso
Формат: artículo original
Статус:Versión publicada
Дата публикации:2024
Описание: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.
Страна:Portal de Revistas UCR
Институт:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Язык:Español
OAI Identifier:oai:portal.ucr.ac.cr:article/56529
Online-ссылка:https://revistas.ucr.ac.cr/index.php/agromeso/article/view/56529
Access Level:acceso abierto
Ключевое слово:rice paddies
energy balance
drone
controlled dry irrigation
arrozales
balance de energía
riego con secas controladas