Introdução de novas cultivares de soja em Alagoas

Abstract

The soybean (Glycine max), is one of the main agricultural commodities in Brazil and it is a good alternative for cultivation in lands that were previously occupied by sugar cane, since many plants closed their doors because of the crisis that the country has been facing and also as an option for crop rotation for cane sugar. There is a need in the state of Alagoas for studies on soybean culture, especially in relation to the choice of ripening groups, which best suits the Coastal Boards region. The objective of the present work was to evaluate the growth and productivity of 6 soybean cultivars. The experiment was carried out at the Engineering and Agricultural Sciences Campus (CECA-UFAL), from November 14, 2018 to April 13, 2019. The experimental design was in randomized blocks, with five replications and six treatments, soybean cultivars: AS 3730, BMX-Power, BRS-9383, M 6210, M 8349 and M 6410. The planting density adopted was 350,000 plants per hectare with a spacing of 0.50 m x 0.04 m, based on the results obtained by Cruz et al. (2016). The harvest was carried out 90 days for short cycle cultivars and 140 days for long cycle cultivars after sowing, when reaching the R8 stage and the grains with 13% humidity. The following variables were evaluated: Agrometeorological variables, leaf area index, productivity and harvest index. All were submitted to the Tukey test at 5%. The cultivars that obtained the highest yields were AS3730 and M 8349, with 6.19 t ha-1 (103 bags) and 5.90 t ha-1 (98 bags).