Efeito da aplicação de manganês no rendimento e na qualidade de sementes de soja

Abstract

The nutritional unbalance, mainly with micronutrients, has contributed for losses in seeds yields. These nutrients are carrying out in biochemistry paths responsible for metabolism of lipids, proteins, and structure in cells membranes. The objective of this work was to evaluate the influence of Mn application (leaf or soil) on yield and seed quality of two soybean cultivars, Garimpo and Conquista. Seed quality was assessed through germination test, accelerated ageing, electrical conductivity, emergence speed, protein and oil content. The application of Mn in the soil or sprayed on the leaves increased its content in plant tissue, improved seed quality by increasing its protein and oil content as well as its germination and vigor. The Mn sprayed on the leaves was more efficient than when this nutrient was applied in the soil.