Efeitos do volume do recipiente na formação de mudas e de hidrogel na implantação de Jatropha curcas L.

Abstract

This study aimed to compare containers for seedling production and to test the addition of hydrogel at planting of physic nut in West of Paraná. In the first experiment seedlings were produced with different volumes of containers, which were measured twice a month for height of the seedlings, collar diameter and percentage of survival. Them the seedlings were taken to field where they were measured every three months for seedling height, collar diameter, percentage of survival, number of branches, number of junctions, number of leaves and leaf area index. In a second test seedlings were produced from three different provenances, and had been added hydrogel at planting. This study showed the best results to the tubettes of 120 cm3, it also showed higher averages in percentage of survival (84,38%) while the mean in height increases did not differ statistically in treatment bags, which showed the highest average for this variable increments (1,48 cm). In field developing there was no significance differences in any of the variables. In the second test were not significant differences between the provenances, and between the use of hydrogel or not. Thus the use of hidrorretentor was not necessary to the seedlings of physic nut planted during spring in Paraná