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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Pedro Henrique Lopes Santana1, Leidivan Almeida Frazão2, Leonardo David Tuffi Santos2, Luiz Arnaldo Fernandes2 and Regynaldo Arruda Sampaio2
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DOI:10.17265/2161-6264/2016.06.001
Affiliation(s)
1. Centro de Ciências Agrárias e Engenharias, Universidadade Federal do Espírito Santo, Alegre, Espírito Santo, 29500000, Brazil
2. Instituto de Ciências Agrárias, Universidade Federal de Minas Gerais, Montes Claros, Minas Gerais, 39404547, Brazil
ABSTRACT
The objective of this study was to evaluate the chemical and physical attributes of soil, and
the productivity of Eucalyptus cultivated
in monoculture and silvopastoral systems. The
experiment started in 2009 and evaluated the following four systems: native vegetation system (Cerrado), a
degraded pasture, a Eucalyptus urograndis monoculture (E. urophylla × E. grandis) and a silvopastoral system (E. urograndis combined with Brachiaria brizantha cv. “Marandu”). The experimental
design used was completely randomized. In each system, four soil samples were
collected from the 0-20 cm depth layer, and the chemical and physical
attributes of the soil were evaluated. The diameters of all Eucalyptus trees at 1.30 m above the
ground as well as the total height were measured. Subsequently, the trees
dimensions were measured and their individual volumes obtained by applying the
Smalian formula. The correlation between the parameters for Eucalyptus production and soil attributes was established using
the Pearson’s correlation
coefficient method. The planting of Eucalyptus in monoculture and silvopastoral systems contributed to the improvement of the
soil’s chemical and physical attributes, which indicates the potential of these
systems for recovery of degraded pastures. The silvopastoral system yielded the
highest average volume of wood per tree (0.2228 m3), with a productivity of 111.4 m3/ha. The Eucalyptus monoculture yielded 0.1895 m3 per tree and 315.71
m3/ha due to the higher
density of the crop. The growth and productivity of Eucalyptus showed highly correlation with the soil attributes, thus suggesting that
well-managed crops are an indicator of the soil quality recovery.
KEYWORDS
Diameter at breast weight, forest-livestock integration system, forest production, soil quality.
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