Effects of gypsum application and fertilization with boron on the yield components of peanut

Abstract

The cultivation of peanut is usually carried out in sugarcane renovation area, where soils commonly present depleted after successive sugarcane cultivation and the exhaust is more intense in tropical sandy soils, resulting in low basic cations (Ca) and micronutrients (B). In this context, the aim of this study was to evaluate the effects of gypsum and fertilization with boron on yield components of peanut. The experimental design was a randomized block, with treatments arranged in split-plot, the plots were made gypsum surface in the amount of 0; 0.5; 1.0 and 2.0 ton ha^-1, and the subplot foliar applications of boron, in doses of 0; 0.5; 1.0 and 2.0 kg ha^-1. At 122 days after sowing in the physiological maturity of the grains were evaluated pod yield and grain yield, percentage of yield, number of pods per plant, number of seeds per pod and weight of 100 grains. There were no significant effects of the application of gypsum surface on peanut yield components, already borated fertilization promoted increases on the number of pods per plant, pod yield and grain yield, and the best productive performance of peanut was given at doses between 1.0 and 1.1 kg ha^-1 B.