COMPONENTES DE PRODUÇÃO DE SOJA EM DIFERENTES ÉPOCAS NO NOROESTE DO RIO GRANDE DO SUL

The soybean crop (Glycine Max (L.) Merrill) is one of the most important cultures in the world economy. The sowing season is a problematic, affecting architecture, development and productivity. Therefore, this work aimed to evaluate the yield components of two soybean cultivars. With different degrees of maturation, submitted to three sowing dates. The experiment was carried out in the agricultural year 2018/2019, using the randomized blocks design in a 3x2 bifactorial scheme. Being three sowing dates EP1 (23/09/2018), EP2 (29/10/2018) and EP3 (25/11/2018), and two cultivars Brasmax (Spear 58I60 RSF IPRO and Elite 5855 RSF IPRO), with Three repetitions. The variables analyzed were: plant height, total number of fertile pods, total number of infertile pods, one thousand seed weight, grain yield and number of infertile pods. There was significant difference only between soybean sowing dates. The smaller number of seeds per pod positively influenced the weight of one thousand seeds.. Sowing performed in the seasons (EP1 23/09/2018) and (EP2 29/10/2018) showed higher grain yield in soybean crop.