Fitting a logistic growth model to yield traits in lettuce cultivars growing in summer

The objective of this study was to fit a logistic model to leaf fresh and dry matter and shoot fresh and dry matter in four lettuce cultivars to describe growth in summer. The cultivars Crocantela, Elisa, Rubinela, and Vera were evaluated in the summers of 2017 and 2018 in soil in a protected environment and in a soilless system. Seven days after transplanting, the leaf fresh and dry matter and shoot fresh and dry matter of 8 plants were weighed every 4 days. The model parameters were estimated using R software with the least squares method and iterative process of Gauss-Newton. This study also estimated the confidence intervals of the parameters, verified the assumptions of the models, calculated the goodness-of-fit measures and the critical points, and quantified the parametric and intrinsic nonlinearities. The logistic growth model fit well to the fresh and dry matter in the leaves and shoots in the cultivars Crocantela, Elisa, Rubinela, and Vera and described the growth of lettuce.

• Tipo de recurso: http://purl.org/coar/resource_type/c_6798
• Fecha de publicación: 2020
• Institución: Universidad Pedagógica y Tecnológica de Colombia
• Repositorio: RiUPTC: Repositorio Institucional UPTC
• Idioma: eng
• OAI Identifier: oai:repositorio.uptc.edu.co:001/16870
• Acceso en línea: https://revistas.uptc.edu.co/index.php/ciencias_horticolas/article/view/8955; https://repositorio.uptc.edu.co/handle/001/16870
• Palabra clave: Lactuca sativa; Plant models; Crop modelling; Non-linear models; Vegetable crop; Vegetables; Lactuca sativa; Modelos vegetales; Modelación de cultivos; Modelos no lineales; Cultivo de hortalizas; Hortalizas
• License: Copyright (c) 2020 Revista Colombiana de Ciencias Hortícolas