Relación entre el coeficiente de cultivo y su caracterización fenológica de Solanum lycopersicum y Beta vulgaris a través de su cobertura de canopia
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Date
2025
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Universidad de Concepción
Abstract
Este estudio evaluó la relación entre el coeficiente de cultivo (Kc) y la cobertura de canopia (CC) en Solanum lycopersicum (tomate industrial) y Beta vulgaris (remolacha azucarera), a partir del seguimiento fenológico de los cultivos en zonas representativas y no representativas. Para ello, se tomaron fotografías para CC y se utilizaron imágenes satelitales para estimar Kc. Se ajustaron modelos polinómicos para describir la relación entre Kc y CC, con coeficientes de determinación de R2 = 0,98 para remolacha y R2 = 0,94 para tomate. El ajuste se validó mediante el error cuadrático medio (RMSE), lo que confirmó la precisión de los modelos al tener un RMSE de 0,03 y un 0,08 en remolacha, y tomate respectivamente. Los resultados permiten estimar el Kc en función del desarrollo fenológico y la cobertura vegetal, lo cual representa una herramienta útil para la agricultura familiar campesina, debido a que les puede resultar difícil conseguir valores de Kc, ya sea por temas técnicos o económicos.
This study evaluated the relationship between the crop coefficient (Kc) and the canopy cover (CC) in Solanum lycopersicum (processing tomato) and Beta vulgaris (sugar beet), based on the phenological monitoring of the crops in representative and non-representative zones. For this purpose, photographs were taken for CC and satellite images were used to estimate Kc. Polynomial models were fitted to describe the relationship between Kc and CC, with coefficients of determination of R² = 0.98 for sugar beet and R² = 0.94 for processing tomato. The fit was validated using the Root Mean Square Error (RMSE), which confirmed the accuracy of the models, yielding an RMSE of 0.03 and 0.08 for sugar beet and processing tomato, respectively. The results allow for the estimation of Kc based on phenological development and vegetation cover, which represents a useful tool for small-scale family farming, as they may find it difficult to obtain Kc values due to technical or economic issues.
This study evaluated the relationship between the crop coefficient (Kc) and the canopy cover (CC) in Solanum lycopersicum (processing tomato) and Beta vulgaris (sugar beet), based on the phenological monitoring of the crops in representative and non-representative zones. For this purpose, photographs were taken for CC and satellite images were used to estimate Kc. Polynomial models were fitted to describe the relationship between Kc and CC, with coefficients of determination of R² = 0.98 for sugar beet and R² = 0.94 for processing tomato. The fit was validated using the Root Mean Square Error (RMSE), which confirmed the accuracy of the models, yielding an RMSE of 0.03 and 0.08 for sugar beet and processing tomato, respectively. The results allow for the estimation of Kc based on phenological development and vegetation cover, which represents a useful tool for small-scale family farming, as they may find it difficult to obtain Kc values due to technical or economic issues.
Description
Tesis presentada para optar al título de Ingeniero Agrónomo
Keywords
Cobertura vegetal, Evapotranspiración, Tomate (planta) - Calidad, Remolacha azucarera