Desenvolvimento da cultura da soja sob fornecimento de fertilizante foliar

Abstract

Soybean (Glycine max L. Merril) is one of the most grain producing crops in the world being grown almost all over the Brazilian territory, so the search for new ways to increase soybean productivity has been constantly object of study by researchers, the foliar fertilization allows to complement in a balanced way the fertilization of the soil or even for situations of stress when a quick response of the crop in case of nutrient deficiency is desired. The objective of this work was to evaluate soybean crop development, yield and total biomass under management of micronutrient foliar fertilizers. The experiment was carried out from October 24, 2017 to February 26, 2018 (17/18 harvest), in the field at Fazenda Pindaíbas, Montividiu-GO. A completely randomized block design with four treatments and four replications was used. Within each plot, representative areas were randomly delimited with 20 mx 20 m, totaling 400 m², the treatments were named CESB BioSoja, Alternative CESB, Alternative Farm, BioSoja Farm which consisted of several applications of micronutrient foliar fertilizers in successive applications along In the developmental stages, respecting their recommendations of doses, application stage and best time of use of the plants, the cultivars used in the experiment was DESAFIO and POWER / SYN 16173, the statistical analyzes were made by the F test with the aid of SISVAR software. ®, being the means for these variables compared between treatments by the Skott Knott test at 5% probability. Analyzing the variables 1,2, 3 and 4 grains per pod and total pods, there was a significant difference, except for the variable 1 grain per pod, which was not significant, it was also observed that there was no significant difference in stem length, seed weight. pod and leaf, only in the weight of the branch, which had significant difference, whereas the grain yield in sc/ha obtained statistically significant results for the treatments BioSoja and CESB BioSoja, followed by the treatments CESB Alternativa and Fazenda Alternativa, the biomass variable. There was no difference between treatments. Thus, it can be concluded that foliar fertilization with micronutrients can promote an increase in grain yield, provided that it follows the application, dose and timing recommendations.