PRODUCTIVITY COMPARISON BETWEEN DIFFERENT HIGHEST PRODUCTION GRAPE VARIETIES IN THE “EL ESPAVEY” VINEYARD IN ACOSTA DISTRICT, COSTA RICA

Abstract

This article summarizes the productivity evaluation results of five grape varieties in El Espavey vineyard in Acosta (San José, Costa Rica), considering their growing conditions (i.e. sow on grill and trellis). A random sampling of 277 plants was carried out in the areas called Alto Espavey and Bajo Espavey. Data analysis is based on average clusters, average maximum leaf area, trellis length of each sample variety (i.e. sow on grill and trellis), and correlation tests between the number of clusters in the estimated maximum leaf area and the growth variable. The results show that the Labrusca varieties have the highest yield and are in Alto Espavey with trellis plantation. This is where the greatest production of the Labrusca grape is developed, and they are named Isabella for the purposes of this study. This project began as a university-society initiative thanks to the relationship between research and social projects stablished on university policies.