Phosphate fertilization in ‘sabiá’ (<i>Mimosa caesalpiniifolia</i> Benth.) implantation in crop-forest system in semiarid region

Abstract

The use of fertilizers can increase the production of Forest species, which can be used for the extraction of wood in monocultures or in agroforestry systems. Thus, the objective was to evaluate the application of phosphorus doses in the implantation of Mimosa caesalpiniaefolia in a degraded area. The experimental design was a randomized complete block design with four blocks, with treatments at the following doses: 0, 12.5, 25.0, 50.0 and 100.0 g plant^-1 of P₂O₅ (source: triple superphosphate), whose quantities used were folded the following year and applied in the projection of the crown. The variables measured were biometric attributes (height, stem diameter in base and in breast height), biomass, nutrient accumulation (whole plant) and soil fertility. There was an increase in height and diameter of the plant, biomass, accumulation of phosphorus in the plant and increase of phosphorus concentrations in the soil. The application of 29 g of P₂O₅ in the pit and after implantation, it is recommended to apply 47 g of P₂O₅ per plant in the projection of saplings seedlings in low phosphorus soils, after first year.