Modelos para estimativa de área foliar de Physalis peruviana

Abstract

The leaf area is one of the main growth parameters of the plants, being directly related to the productivity of the crop. Based on this, there are several methods to determine the leaf area, among them the non-destructive ones that are easy to perform and precise, because they allow the monitoring of the crop throughout its cycle and development. Therefore, the objective of this work was to obtain mathematical models to determine the leaf area by measuring the length and width of leaves of Physalis peruviana. The experiment was carried out in the experimental area of the Federal University of Fronteira Sul, Campus Cerro Largo from July 24, 2017 to February 21, 2018. To determine the leaf area was used the direct method where the measurement of the length of the leaf from the beginning of the petiole to the end of the central vein and the largest width of the leaf perpendicular to the central vein. In order to obtain the regressions, the destructive method was used, where the leaves were cut in circles, concluding that the best model is the one that uses the width measurement of the leaves.