Evaluación del rendimiento y calibración de sensores de humedad de bajo costo a múltiples profundidades de Oxisol

Autores/as

DOI:

https://doi.org/10.33448/rsd-v11i4.27420

Palabras clave:

Función de calibración; Sensores electromagnéticos; Sensor HFM2030; Contenido de humedad del suelo; Contenido volumétrico de agua.

Resumen

El control de la humedad del suelo es un componente clave en la gestión del riego y se puede llevar a cabo con la ayuda de sensores electromagnéticos de bajo costo. Este estudio tuvo como objetivo desarrollar ecuaciones de calibración para el sensor HFM2030 a diferentes profundidades (0-20; 20-40; 40-60; 60-80; 100 cm) de Oxisoles y evaluar los niveles de precisión de las ecuaciones de calibración utilizadas en el monitoreo continuo. de la humedad del suelo. Los valores de referencia del contenido de humedad del suelo se midieron mediante un método gravimétrico estándar, se convirtieron en humedad volumétrica y luego se compararon con las lecturas del sensor para desarrollar ecuaciones de calibración. El ajuste de la función de regresión se evaluó con base en el coeficiente de determinación (R2). Los resultados indicaron que las ecuaciones de calibración eran lineales a diferentes profundidades del suelo. La calibración del sensor HFM2030 mejoró la estimación del contenido volumétrico de agua en 31,21%, 23,46%, 24,93%, 31,93% y 41,18% en las capas de 0-20, 20-40, 40-60, 60-80 y 80-100 cm, respectivamente. Aquí, se demuestra que la correcta calibración del HFM2030 debe preceder a la instalación y uso de estos sensores en el campo. Los resultados de este estudio representan un paso más hacia el desarrollo de criterios que apuntan a una mayor precisión en el uso de sensores en la gestión del riego. Las ecuaciones de calibración desarrolladas en este estudio pueden ser aplicables y útiles para agricultores e investigadores que trabajan con sensores HFM2030 en condiciones de suelo similares en otras regiones de Brasil y a nivel mundial.

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Publicado

20/03/2022

Cómo citar

PEREIRA, E. D.; CASTRO FILHO, M. N. de .; BUENO, D. A. S. .; CABALLERO, R. I. C. .; CHAGAS, R. R. .; GOMES, R. S. .; SILVA, D. J. H. da . Evaluación del rendimiento y calibración de sensores de humedad de bajo costo a múltiples profundidades de Oxisol. Research, Society and Development, [S. l.], v. 11, n. 4, p. e35211427420, 2022. DOI: 10.33448/rsd-v11i4.27420. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/27420. Acesso em: 30 jun. 2024.

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Sección

Ciencias Agrarias y Biológicas