Fenologia de pitangueira em condição de pomar no município de Dois Vizinhos ­- PR

Abstract

Phenological and production aspects are important when one wants to evaluate the adaptation condition of any fruit crop, especially when related to species little used commercially. The objective of this work was to evaluate whether the way of obtaining the seedling and the plant formation system influence the phenological aspects of the pitangueira under field conditions. The present work was carried out in the Fruit Native Orchard experimental area of the Federal Technological University of Paraná (UTFPR) ­ Campus Dois Vizinhos ­ Paraná, between December 2017 and December 2021. The experiment was conducted using Surinam cherry trees (Eugenia uniflora), four years old, from sexual and asexual propagation using the mini­cutting technique and diferente shading conditions. The plants were subjected to three training systems in the field: free form, central leader and cup training. In 2020 and 2021, the dates of flowering (beginning, full and final), fruit set and harvesting, and the density of flower buds and fruits, yield and productivity were evaluated. Regarding the phenology, it was concluded that the period and time of flowering and fruit harvest were different among the conduction systems and light intensities in which the seedlings were formed. The production and productivity of the plants, during their formation that remained in an environment with a light intensity of 50% and in the field conducted in a free way, had the best performance. The cherry trees of sexual and asexual origin have shown to adapt to the adopted conduction systems, so the experiment should continue in order to analyze whether the growth, development and production of the species will maintain the same behavior and quality, and whether the plants will present a fast decline in production when managed in conduction systems.