Tatiane Melo de Lima
Abstract:
Peanut (Arachis hypogaea L.) is the fourth most cultivated oilseed in the world, occupying about 22 million hectares. Peanut cultivation is an excellent diversification alternative for family farmers, as it has multiple uses. However, southwest of Goiás is not a traditional peanut producing region, and little is known about the performance of this crop in this region. Therefore, the objective of this research was to evaluate the productive performance of peanut cultivation submitted to increasing doses of phosphate and potassium fertilization in soils with different textures, in two growing seasons (crop and safrinha). The experiments were carried out on a clayey red dystroferric latosol (LVdf) and a medium texture red-yellow dystrophic latosol (LVAd). In this study we used the peanut cultivar BRS Havana. It was evidenced that the phosphorus doses, the soil type and the planting time have an effect on the peanut crop leaf cover factor. Thus, the peanut leaf cover factors were higher in the LVdf crops in the crop period, proportional to the phosphorus doses. Phosphate fertilization significantly influenced peanut yield, while potassium did not affect peanut yield. The environmental conditions of the harvest season favor the better development of peanuts, which, in turn, presents higher productivity when compared to peanuts grown in the off-season. The productivity of peanuts grown in LVdf is higher than in LVAd.
