Autonomous tomato irrigation management using Irrigás® soil sensors

• Autor(a) principal: Wamser, Anderson Fernando
• Data de Publicação: 2021
• Outros Autores: Feltrim, Anderson Luiz, Valmorbida, Janice, Pereira Monteiro, Fernando, Lins Junior, Juracy Caldeira, Hahn, Leandro, Mallmann, Guilherme, Serafni, Tamara Fátima
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Agropecuária Catarinense (Online)
• Texto Completo: https://publicacoes.epagri.sc.gov.br/rac/article/view/1090
• topic: Solanum lycopersicum L.; tensiometria gasosa; déficit hídrico

The objective of this study was to evaluate and validate the use of the Irrigas® soil sensor in the autonomous management of tomato irrigation, in the region of Caçador, SC. In the 2016/17 harvest, an experiment was conducted in a protected environment, evaluating five soil moisture stresses (20, 30, 40, 50 and 60 kPa) for the start of irrigation. In the 2017/18 harvest, a field experiment was conducted evaluating three irrigation managements (autonomous irrigation management based on Irrigás® sensors; irrigation management based on conventional tensiometry; and irrigation management without technical criteria). In the 2018/19 crop the same irrigation management as in the previous harvest, with the exception of irrigation management without technical criteria. Finally, in the 2019/2020 harvest a validation unit was conducted in a protected environment, evaluating the autonomous management of tomato irrigation based on the Irrigás® sensor. In the 2016/17 harvest the highest production of marketable fruits (10.9 kg / plant) was obtained at the estimated soil moisture tension of -44 kPa. In the 2017/18 harvest, there were no differences between the irrigation management evaluated, whereas in the 2018/19 harvest, irrigation management based on the Irrigás® sensor obtained marketable fruit yields 18% higher than management based on conventional tensiometry. Irrigás® sensors allowed the autonomous management of tomato irrigation grown in a protected environment during the entire cycle.