Riego deficitario y densidad de siembra en indicadores morfofisiológicos y productivos de híbrido de maíz

The rapid increase in the world's population has made efficient use of water an urgent necessity. The objective of the research was to evaluate the effect of deficit irrigation and planting density on morphophysiological and productive indicators of the hybrid Py 4039 corn crop with drip irrigation. A bifactorial experiment was developed with a 4x3 arrangement with 12 treatments, four percentages of the raw sheet and three planting densities were evaluated. The calculation of the gross sheets was carried out by making the irrigation programming with the Cropwat 8.0 software. An experiment was developed in divided plots. In the main plots the effect of the percentages of the raw sheets was evaluated, which were 120%, 100%, 90% and 80% with respect to the total gross sheet, in the secondary plots the effect of the sowing density was evaluated determined by the distance between rows that was one meter and the distance between plants that was 0.15m (A); 0.20m (B); 0.25m (C), obtaining 66 666; 50,000 and 40,000 plants per ha. The morphophysiological variables measured were plant height, stem diameter, number of leaves and ear insertion height, and the productive variables: average grain weight and estimated yield. The efficient water use ratio was calculated, from the volume of water consumed, against the corn production obtained. The morphophysiological and productive variables were evaluated by means of a bifactorial analysis of variance, with the statistical program (STATGRAPHICS) Statistical Analysis System, applying the Tukey test, for the comparison of the mean, for a significance level of (P