Seasonal growth dynamics of clonal eucalyptus plantations under different water regimes and mineral fertilization

• Grant number: 13/24919-3
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: April 01, 2014
• End date: February 28, 2015
• Field of knowledge: Agronomical Sciences - Forestry Resources and Forestry Engineering - Forestry
• Principal Investigator: José Leonardo de Moraes Gonçalves
• Grantee: Andréa Virginia Athayde Wenzel
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The produtividae a plantation forest that linked the features of your site, taking beyond the fertility of the soil, water regime and temperature as main limiting. Such factors influence the rate of growth of the species throughout the year, with reflected in the variation of stem diameter and leaf area index. In this context, the work aims to analyze the growth rate biweekly clonal eucalyptus plantations under different regimes of mineral fertilizers and climatic conditions. The test will be conducted at two sites florestias with five randomized treatments in four replications. The omission of each nutrient will be tested primary (NPK) alone, total failure and complete mineral fertilization with these nutrients for the evaluation of the response of each of the growth rate of trees. The evaluation of the influence of seasonality and mineral fertilization will be performed bythrough dendrometric tracks, seleciaonadas 15 trees per treatment were distributed in classes according to the circumference at breast height (CBH) average for each treatment obtained after previous inventories. The leaf area index is obtained by the method of hemispherical photographs from six images per share, in line with three photos and three between rows of planting. These results will be correlated to rainfall and average temperature through statistical analyzes with SAS software (Statistical Analysis System) in order to better understanding of the influence of soil and climatic variations in tree growth and mineral fertilization.