Utilização de fertilizações química e orgânica no maracujazeiro amarelo (passiflora edulis sims) cultivado em solo do Cariri Paraibano.

Abstract

Irrigation and fertilization, both organic and chemical, are important techniques for achieving good indexes in passion fruit cultivation, especially in regions where precipitation is irregular and insufficient throughout the year. In this context, the objective of this work was to study the agronomic characteristics and economic viability of passion fruit (Passifloraedulis SIMS) cultivated under different sources of organic and chemical fertilization. The experiment was carried out in SitioSalgadinho, located in the municipality of Amparo-PB. The experimental design was a randomized block design, composed of five (05) treatments: control (C), NPK fertilization (AQ), bovine manure (EB), goat manure (EC) and green manuring (lab. four (04) replicates (blocks), totaling twenty (20) plots. The variables evaluated were the absolute growth rate, number of fruits per plant, productivity per plant, productivity per hectare. From 15 to 90 days after planting, a linear increase in plant diameter and height growth was observed, but these variables, in relation to the control, did not present significant differences as a function of fertilization. During the five evaluations, from 180 to 255 days after planting, there was an increase in number, mass, diameter, length and fruit yield. The number of fruits was higher with the application of chemical fertilization, goat manure and bovine manure. The fruit mass was higher with NPK application, not differing from goat manure, but higher than the use of cattle manure, lablab and the control. Fruit diameter and length showed the same trend.