FEIJOEIRO COMUM IRRIGADO SUBMETIDO À DIFERENTES DOSES DE MANGANÊS E ÉPOCAS DE APLICAÇÃO

Abstract

Brazil is the largest producer of beans and this legume is one of the largest sources of vegetable proteins. Some minerals, such as manganese, are extremely important for the development of this crop. Knowing the socioeconomic importance of the bean culture, the objective was to evaluate the agronomic performance of the irrigated common bean, grown under different doses of manganese and two application times. The experiment was carried out in the experimental área of the Federal Institute of Goiás, Campus Ceres (GO), adopting a 2x4 factorial design with four replications, with two application periods (V4 and R5) and four doses of Mn (0, 150, 300, 450 g ha-1). The foliar application of Mn was carried out in the phenological stages V4 (07/06/2019) and R5 (17/06/2019). The variable sanalyzed were: plant height (m), number of pods per plant (NPP), number of grains per pod, mass of a thousand grains (g) and productivity (kg ha-1). The data were submitted to ANOVA and their means were compared using the Tukey test (5%). Regression equations of the variables as a function of mixed mineral doses were adjusted using software R. The dose of 450 g ha-1of Mn provided greater productivity regardless of the time of application. The highest NPP was obtained with the dose of 150 g ha-1, in V4. Also in V4, the dose of 450 g ha-1of Mn provided a greater weight of a thous and grains.