Agronomic evaluation of soybean cultivars under irrigation in semiarid region of Minas Gerais State

Abstract

To reach soybean maximum yields, we should start from an appropriate cultivars choice according to the edaphoclimatic conditions of the growing region. This study aimed to evaluate the agronomic aspects of soybean cultivars under irrigated conditions in semiarid region of Minas Gerais. The experiment was carried out at Instituto Federal do Norte de Minas Gerais (Federal Institute of Northern of Minas Gerais), Campus Januária. The treatments consisted of eight soybean cultivars, M-SOY 9350, M-SOY 8787 RR, M-SOY 8352 RR, CD 219 RR, P98Y51, P98Y70, P99R01, P99R91. We adopted the randomized block design with four replications. Each plot consisted of four rows of 10 m. The center two line, less 50 cm from the ends, was the usable area. The used culture installation and cultural practices were the standard for soybean cultivation. The conventional sprinkler was used in the experiment. The height of first pod insertion and plant, number of pods per plant, cycle, weight of hundred seeds and grains yield characteristics were evaluated. The M-SOY 8352 RR cultivar did not reach the proper height for mechanical harvesting. All evaluated cultivars showed unfavorable height of first pod insertion to the mechanized harvesting. The later cultivar was P99R01. The more productive cultivars were P98Y70 and P99R01.