Estimación del Área Foliar del Tomate Chonto Roble Solanum lycopersicum L. Usando un Modelo de Regresión. Cultivos del Municipio de San José de Miranda (Santander, Colombia).

Abstract

Leaf area calculation contributes to the management of production predictions and to the proposals for solving crop problems, being the basis for estimating the water and nutrient needs of crops, bioenergetic efficiency and potential damage to crops. The general objective of this study was to estimate the leaf area for the chonto roble tomato S. lycopersicum, grown on the Los Pitos farm (San José de Miranda, Santander) with an appropriate regression model. For this, a quantitative methodology of observational design is used in which eight samples of 50 leaves each were taken and, with a manual method of drawing silhouettes on sugar paper, these samples are taken to the laboratory to measure length, width and weight. These and other morphophysiological variables are exported from Microsoft Excel matrices to the SPPS 23 statistical program to be processed, discarding the linear regression model because it did not meet the assumptions and moving on to test curvilinear regression models until obtaining an equation from the growth model that had a determination coefficient of 0.992 (R2 = 0.992). This degree of precision of the model will allow growers to determine the leaf area of the plants of this tomato variety by non-destructive methods from measurements based on the silhouette of the leaf, which will result in data to determine the best possible management of the plantation, guaranteeing fruit quality and sufficient production.