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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 22, No. 3, 2012, pp. 617-624
Bioline Code: cf12057
Full paper language: English
Document type: Note
Document available free of charge

Ciência Florestal, Vol. 22, No. 3, 2012, pp. 617-624

 pt EFICIÊNCIA DOS ÓLEOS DE NIM ( Azadirachta indica check for this species in other resources A. Juss.) E MAMONA ( Ricinus communis check for this species in other resources L.) NA RESISTÊNCIA DA MADEIRA DE SUMAÚMA ( Ceiba pentandra check for this species in other resources (L.) Gaerth.) A FUNGOS XILÓFAGOS EM SIMULADORES DE CAMPO
Paes, Juarez Benigno; de Souza, Ademilson Daniel; de Lima, Carlos Roberto & de Souza, Pierre Farias

Resumo

A pesquisa objetivou avaliar a efici ência dos óleos de nim ( Azadirachta indica check for this species in other resources ) e de mamona ( Ricinus communis check for this species in other resources ) na melhoria da resistência da madeira de sumaúma ( Ceiba pentandra check for this species in other resources ) a fungos xilófagos em simulador de campo. Os óleos de nim e de mamona foram extraídos com álcool et ílico absoluto e empregados no preparo das soluções preservativas. Amostras de madeira com dimensões de 1,5 x 0,5 x 15 cm (radial x tangencial x longitudinal) foram tratadas para atingir uma retenção nominal de 10 a 16 kg de solução/m³ de madeira. As amostras permaneceram por 180 dias sob ação da microflora natural existente em três tipos de solos: de floresta, de uso agr ícola e de pastagem natural. Entre os solos testados, o de uso agr ícola apresentou maior atividade biológica, deteriorando mais as amostras. Dentre as soluções testadas, o óleo de nim puro proporcionou maior proteção à madeira. As soluções preparadas com os óleos de nim e mamona não protegeram bem a madeira do ataque de fungos xilófagos naturalmente existentes no solo de uso agrícola.

Palavras-chave
óleos de nim e mamona; tratamento da madeira; simulador de campo

 
 en EFFICIENCY OF NEEM ( Azadirachta indica check for this species in other resources A. Juss.) AND CASTOR OIL PLANT ( Ricinus communis check for this species in other resources L.) OILS FOR THE IMPROVEMENT OF Ceiba pentandra check for this species in other resources (L.) Gaerth. WOOD RESISTANCE TO XILOPHAGOUS FUNGI IN SOIL BED TEST
Paes, Juarez Benigno; de Souza, Ademilson Daniel; de Lima, Carlos Roberto & de Souza, Pierre Farias

Abstract

The research aimed to evaluate the efficiency of neem ( Azadirachta indica check for this species in other resources ) and castor oil plant ( Ricinus communis check for this species in other resources ) oils for the improvement of Ceiba pentandra check for this species in other resources wood resistance to xilophagous fungi in soil bed condition (field simulator). The neem and castor oil plant oils were extracted with absolute ethyl alcohol and employed in the preparation of oil solutions. Wood samples with dimensions of 1.5 x 0.5 x 15 cm (radial x tangential x longitudinal) were treated to reach a nominal retention of 10 to 16 kg of solution/m³ of wood. The samples were submitted to the action of natural micro-flora of three soils; forest, agricultural use and natural pasture soils, for 180 days. Among the tested soils, the agricultural presented greater biological activity, which damaged the samples even more. Among the tested solutions, the pure neem oil provided increased protection to samples. The prepared solutions using neem and castor oil plant oils did not protect the wood from the attack of xylophagous fungi existing in the ground.

Keywords
neem and castor oil plant oils; wood treatment; soil bed assay

 
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Alternative site location: http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/index

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