Performance and quality of wood in a clone of Eucalyptus in monoculture and silvipastoral system Arthur Faganello Teodoro dos ANJOS 1 , Wyllian Winckler SARTORI 1 , Helio TONINI 2* , Marina Moura MORALES 3 , Vanderley Porfírio daSILVA 3 1 Instituto de Ciências Agrárias e Ambientais, Universidade Federal de Mato Grosso, Sinop, Mato Grosso, Brasil. 2 Embrapa Agrossilvipastoril, Sinop, Mato Grosso, Brasil. 3 Embrapa Florestas, Colombo, Paraná, Brasil. * E-mail: helio.tonini@embrapa.br Nativa, Sinop, v.4, n.2, p.77-81, mar./abr. 2016. Pesquisas Agrárias e Ambientais DOI: 10.14583/2318-7670.v04n02a04 http://www.ufmt.br/nativa ISSN: 2318-7670 ABSTRACT: This work was carried out with the purpose to evaluate and compare the performance and the variations in the quality of the wood of eucalyptus trees planted in silvopastoral system and in monoculture. Data were collected from 13 trees sampled at the age of 36 months, selected according to conidence interval of the mean diameter at breast height (DBH) and according to the position of the trees in the planting strip in the silvopastoral system, with south, north and central-facing exposure slopes. The variables DBH, total height and commercial height, volume and conicity of the trunk, basic density and displacement of the pith were evaluated. Results led to the conclusion that trees in the silvopastoral system had higher DBH, lower overall height and increased conicity of the trunk than in monocultures. DBH did not vary according to the position in the planting strip, but trees with north-facing exposure were lower and more conic. Basic density and displacement of the pith were not inluenced by cropping system. Keywords: hybrid clone Eucalyptus grandis x Eucalyptus urophylla, integrated production systems, Mato Grosso. Desempenho e qualidade da madeira de um clone de eucalipto em monocultivo e sistema silvipastoril RESUMO: Este trabalho foi desenvolvido com o objetivo de avaliar e comparar o desempenho e as variações na qualidade da madeirade árvores de eucalipto implantadas em sistema silvipastoril e em monocultivo. Os dados foram coletados em 13 árvores amostras aos 36 meses de idade, selecionadas em função do intervalo de coniança da média dos diâmetros a altura do peito (DAP), e da posição das árvores na faixa de plantio no sistema silvipastoril, com face de exposição sul, norte e central. Foram avaliadas as variáveis DAP, altura total e altura comercial, volume e conicidade do tronco, densidade básica e deslocamento da medula. Concluiu-se que no sistema silvipastoril as árvores apresentaram maior DAP, menor altura total e maior conicidade do tronco que no monocultivo. O DAP não diferiu em relação à posição na faixa de plantio, porém as árvores com face de exposição norte foram mais baixas e cônicas. A densidade básica e o deslocamento da medula não foram inluenciados pelo sistema de cultivo. Palavras-chave: clone de híbrido Eucalyptus grandis x Eucalyptus urophylla, sistemas integrados de produção, Mato Grosso. Recebido em outubro/2015; Aceito em março/2016. 1. INTRODUCTION One of the great national challenges today is to turn degraded land into productive areas with the introduction of trees in agricultural systems such as integrated crop livestock forest (iCLF) or agrosilvopastoral systems. The presence of trees in agricultural systems can add several beneits such as improved thermal comfort indices, increased forage supply throughout the year, reduced erosion, optimized use of solar energy and optimized nutrient cycling (SALTON, 2015). The integration of production systems has been adopted in Brazil and currently totals approximately 2 million hectares. The expectation is that in the next 20 years these are implemented in more than 20 million hectares (BEHLING et al., 2013). In Mato Grosso, the area with integration systems has increased and currently encompasses 500,000 hectares distributed in 41 municipalities. However, in only 11% of this area, the forest component is present (GIL, 2013). The low utilization of the forest component in integration systems is due in large part to the lack of information on the environmental beneits and proitability brought about by the inclusion of trees in agricultural systems. It is still necessary to generate technologies and information in order to enable the handling, quantiication, assess and prediction of forest