Influence of populational density of sorghum on flag leaf area and on grain production.

Abstract

With the objective of studying the populational density on grain production of sorghum (Sorghum bicolor L. Moench) cv. EA-955, an essay was conducted, from August/84 to January/85, using six plant/linear meter densifies (5; 10; 15; 20; 25; and 30). The space between lines was 0,75 m. The essay followed the experimental design of randomized complete blocks with six treatments and four replications. The parameters considered for evaluation were: flag leaf area, panicle size, number of grains/panicle, weight of 1.000 grains, and grain production. It was evidenced that the populational densities of ten to fifteen plants per linear meter presented the best performance in terms of yield. In respect to the other parameters, it was observed that they were markedly affected by the populational density variation.