Densidade de plantas e época de semeadura na cultura da soja na região de Dourados - MS

Abstract

The objective of this work was to evaluate the influence of plant density and sowing season on soybean production and yield components in Dourados - MS. An assay was conducted in the agricultural year of 2016/2017. The experimental design was a randomized complete block design in a 5 x 2 factorial scheme with 4 replicates, totaling 40 experimental units. The cultivar used was M6410 IPRO and the treatments were composed of five plant densities per meter (10, 12, 14, 16 and 18) at two sowing dates (09/21/2016 and 10/09/2016). The characteristics of plant height, height of first pod insertion, number of productive branches, number of pods per plant, number of grains per pod, mass of one thousand grains and grain yield were evaluated. It can be observed that the density of plants showed effect on almost all the characteristics, except mass of thousand grains and productivity. Regarding sowing time, there was influence on plant height, number of productive branches, number of pods per plant and number of grains per pod. Grain productivity did not differ among treatments.