Avaliação da produtividade de soja, em resposta a utilização de fertilizantes foliares

Abstract

The present work aims to evaluate the productivity increase under the use of the micronutrients Manganese and Boron via application of foliar fertilizers in the cultivation of transgenic soybean in commercial crops in the city of Mangueirinha located in the Southwest of the State of Paraná with Temperate and Altitude of 921 and in the cities of Xanxerê, Ouro Verde and São Domingos located in the West of the State of Santa Catarina with subtropical humid climate (Cfa) and Altitude of 800, 710 and 650 meters respectively. The soils of the experimental areas are classified as Dystrophic Red Latosol, with predominantly clayey texture (STRECK, 2008). The commercial products used in the implementation of the experiment were the basis of Mn phosphite with its formulation Manganese 45.63 g / ha, Nitrogen 20.28 g / ha, Sulfur 27.87 g / ha, Boron 9.36 g / ha Phosphorus 81.12 g / ha, Aminoacids 10.86 g / ha, Phosphite 91.68 g / ha, and another product based on copper phosphite in its formulation Nitrogen 20.4 g / ha, Phosphorus 47.6 g / ha, Copper 27, g / ha, Boron 12.65 g / ha, Sulfur 7.4 g / ha, Amino acids 10.86 g / ha, Phosphite 104.4 g / ha. Two evaluations were carried out, the first one being 15 days after the application of the foliar fertilizers and the second one in full maturation, collecting at random 5 plants from each stand, being evaluated as number of pods and pod mass, of leaves per plant and mass of leaves per plant and final yield of treatments. The results obtained show that the application of foliar fertilizers based on: N, P, S, Mn, B and Cu and amino acids from the vegetative phase until the reproductive phase positively influences the development of the crop, besides improving sanity and nutrition presenting a final increase in soybean yield in the area treated with foliar fertilizers.