Eficiência agronômica e qualidade de sementes de amendoim sob irrigação na região de Dourados – MS

Abstract

Peanuts is an oilseed that has good adaptation in different climatic conditions, however the production and seeds quality can be affected by environmental factors, including water availability. The objective of this work was to evaluate the agronomic efficiency, through yield components, seeds quality and economic viability of peanut cultivation, under different water blades, in the region of Dourados, Mato Grosso do Sul. The experiment was carried out in the irrigation and drainage area of UFGD, Dourados-MS, whose soil and climate are classified as distroferic Red Latosol and Cwa - wet mesothermal, respectively. The experimental design used was randomized blocks with split plots with four replications. In the plot, six irrigation blades were placed, which consisted of irrigation blades based on the reference evapotranspiration (ETo), which are: 0, 25%, 50%, 75%, 100% and 125% of ETo. In the subplots two peanut cultivars were used, IAC TATU and IAC 503. Irrigation was drip, with a drip line for each planting line. After harvesting, the seeds went through a drying period. Yield components and physiological seed were evaluated, and production costs, revenue and profitability index determined. In the climatic conditions of Dourados, the peanuts cultivation is economically viable, producing quality seeds, and irrigation with blades between 75% to 100% of ETo is recommended, aiming at higher yields and quality.