DESEMPENHO AGRONÔMICO DA CULTIVAR DE SOJA 96Y90 EM FUNÇÃO DE DIFERENTES POPULAÇÕES DE PLANTAS

Abstract

Soy is a crop of extreme economic importance in the world, being the most planted oleaginous in the world. This grain has an essential role both in human nutrition and in animal feed. Therefore, the choice of the soybean cultivar and the ideal plant population in the area are essential factors to be observed by the producer during the planting period, and the population density is a variable that directly influences crop productivity. The objective of this study was to evaluate the performance of soybean cultivar 96Y90 as a function of different plant populations. The experiment was carried out between 2016/2017 in the municipality of Boa Vereda, in the southern region of Goiás. The experiment was set up in a randomized complete block design with four treatments and six replicates (4 x 6), totalizing twenty four experimental units . Treatments were tested with four different populations: 350,000, 400,000, 450,000 and 500,000 plants per hectare. The parameters evaluated in the work were: SPAD (Soil Plant Analysis Development), first pod insertion, average length of plant, pods per plant, grains per plant, weight of one thousand seeds and productivity. Through the data analyzed in the statistical program Sisvar 5.6 lnk, it was possible to conclude that the different population densities obtained significant difference only on the variables SPAD lower third and average length of plants. Since there was no significant difference according to the statistical analysis for productivity, it is recommended that the producer uses the smallest populations, aiming at the reduction in the costs for the soybean crop implantation.