ADUBAÇÃO FOSFATADA NO CRESCIMENTO E NA QUALIDADE DE FRUTOS DE MARACUJAZEIRO AMARELO

Abstract

Passionflower (Passiflora edulis) is a tropical plant species widespread in the world, Brazil being the largest producer of fruit in the world. However, phosphate fertilization limits production both by the unavailability of the nutrient in the soil and by the outdated manuals for the new cultivars currently used. The objective of this work was to evaluate the vegetative development and quality of yellow passion fruit with different P2O5 doses. The work was carried out in a commercial orchard in the municipality of Curral de Cima-PB, in a soil classified as Yellow Red Argissolo. A randomized complete block design with five treatments and four replications was used. The treatments were increasing doses of P2O5 with the source as the simple superphosphate, as follows: 0 (control); 75; 150; 225; 300 g of P2O5 / pit together with 20L of bovine manure and 300g of dolomitic limestone. (Total diameter of the fruit, longitudinal and transverse diameter of fruits, bark thickness, pulp mass, length-width ratio, yield, total soluble solids (sst), pH and titratable acidity). It was observed the phosphate fertilization promoted a higher production of tertiary branches and an increase in stem diameters and secondary branches