Biometric analysis of eucalyptus forests in the five initial years of development

This research is aimed at evaluating the effects of irrigation and mineral nutrition on the growth and production of eucalyptus (Eucalyptus grandis) cultivated in the region of Triangulo Mineiro. The experiment was conducted at the Farm School of Universidade de Uberaba, which has 850 m of altitude, in red-yellowish Latosoil. Irrigated treatments and non-irrigated treatments with different nutritional conditions (25%, 50% and 100% of the recommended doses) were compared. It was evaluated the parameters of diameter at breast height and growth in a period of five years of conducted experiment; the final productivity of wood was also determined at the end of that period. Even though results were statistically different throughout the years, at the end of the analyzed period it was observed that irrigated treatments showed the biggest biometric values as well as the biggest rates of annual medium increment. Proximity of values may have occurred due to excessive rainfall at the local, making water more available to the non-irrigated treatments.