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MODELING THE GROWTH OF EUCALYPTUS PLANTS BASED ON THE THERMAL SUM

Authors :
Aline Santana de Oliveira
Aristides Ribeiro
Carla Raphaela Araújo Silva
Aloísio Xavier
Alex Ferreira de Freitas
Source :
Revista Árvore, Vol 41, Iss 2
Publisher :
Sociedade de Investigações Florestais.

Abstract

ABSTRACT Among the environmental variables that affect the growth and development of plants, the air temperature is of great importance. In this context, the objectives of this work were to model the growth of eucalyptus seedlings in terms of accumulated degree-days during the production process and model validation. The study was conducted in the forest research nursery of the Department of Forestry, located in Viçosa (MG), during the periods of 08/02/2011 to 28/04/2011 and 03/08/2012 to 01/11/2012, making it possible to contemplate seasonal variations in the production cycle. The monitored variables were shoot height, stem diameter, leaf area, root length and fresh and dry biomass. Results showed that it took 1065 degree-days for the production of seedlings and sigmoidal models obtained showed high correlation and Willmott coefficients, indicating good performance for estimating the growth and development of eucalyptus seedlings. This tool has great potential for planning and monitoring the production of eucalyptus seedlings in nurseries.

Details

Language :
English, Spanish; Castilian, Portuguese
ISSN :
18069088
Volume :
41
Database :
Directory of Open Access Journals
Journal :
Revista Árvore
Publication Type :
Academic Journal
Accession number :
edsdoj.02b8cb50a13d42888ae37cade3f6236d
Document Type :
article
Full Text :
https://doi.org/10.1590/1806-90882017000200012