Irrigation and fertirrigation in the Eucalyptus development

Abstract

The objective of this study was to evaluate the influence of in-ground irrigation and fertirrigation on the development of hybrid eucalyptus Grancam, in the fourth year after its implementation. The experimental design was a randomized block with split plots. The plots were two trickle irrigation systems (drip and micro sprinkler) and no irrigation treatment and the subplots, the conventional fertilization and fertirrigation. It was evaluated: plant height, diameter at breast height and wood volume. The results were submitted to analysis of variance and Tukey test at 5% of significance. The plant height was 13% higher in the drip irrigation and 11% in system micro-sprinkler system, in relation the area without irrigation. The Irrigation showed higher values of diameter at breast height, resulting in a 19.8% increase in the volume production of wood when irrigated by micro and 17.7% when irrigated by drip over the area without irrigation. The irrigation increases volumetric timber production. The drip irrigation increases the efficiency of water use in volume production of wood. The fertirrigation can replace conventional fertilization in irrigated forests.

Keywords:
Grancam; In-ground irrigation; Management forest; Volume of wood