Efeito dos arranjos espaciais de plantas nas características agronômicas da cultivar de soja BG 4781 IPRO

Abstract

Soy is the Brazilian agricultural crop that has expanded the most in the last three decades, and is still the most consumed legume in the world. The market for this legume remains in high demand, so in recent years several alternatives have been used to optimize production potential, but many of the tested alternatives require a high cost to implement. Changing the spatial arrangements of plants is an alternative to reach the maximum productive potential of soybean, with a production cost similar to the conventional cost. The present work aimed to evaluate the influence of different spacing and sowing densities on the soybean cultivar BG 4781 IPRO, when subjected to different spatial arrangements. The experiment was conducted in the 2019/2020 harvest, in the experimental area of Pastorello Consultoria Agronômica e Pesquisa EIRELI, in the municipality of Sinop-MT. The design used was completely randomized (DIC), with 5 treatments and 4 replications. The variables evaluated in the experiment were: plant height, number of branches, number of nodes,, number of pods with one, two, three and four grains, weight of a thousand seeds and yield. Treatment 5, with row spacing of 50 cm and final population of 148,000 ha-1, presented the highest means for the variables number of branches and number of pods per plant. Treatment 5 and 3 presented the highest means for the variable number of nodes per plant. Treatment 2 with row spacing of 25 cm and final population of 296,000 ha-1, presented the highest means for the variables productivity and plant height. The variable weight of one thousand seeds did not show significant difference for any of the treatments.