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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. 19, No. 3, 2009, pp. 267-278
Bioline Code: cf09026
Full paper language: Portuguese
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 19, No. 3, 2009, pp. 267-278

 pt Inoculação de Fusarium oxysporum check for this species in other resources e Fusarium solani check for this species in other resources e níveis de sombreamento na erva-mate: influência na severidade da podridão-de-raízes
Poletto, Igor; Muniz, Marlove Fátima Brião; Ceconi, Denise Ester; Araujo, Maristela Machado; Rodrigues, Johnathan & Mezzomo, Ricardo

Resumo

A erva-mate ( Ilex paraguariensis check for this species in other resources A. St.-Hill) é uma espécie amplamente cultivada na Região Sul do Brasil. Com o aumento da área plantada, sobretudo na última década, os problemas fitossanitários causados por pragas e doenças aumentaram e, dentre estes, a podridão-de-raízes vem se tornando um dos principais. Dentre os patógenos causadores dessa doença, Fusarium oxysporum check for this species in other resources Schlecht. e Fusarium solani check for this species in other resources (Mart.) Sacc são os principais. Esses fungos provocam sérios danos decorrentes da destruição do sistema radicular, ocasionando, nos casos mais graves, a morte da planta. Suspeita-se que a incidência e a severidade da doença são influenciadas pelo cultivo de ervais em diferentes níveis de sombreamento ou a pleno sol. Assim, foram instalados experimentos na área do Viveiro Florestal pertencente ao Departamento de Ciências Florestais/CCR/UFSM com o objetivo de confirmar tal hipótese. O experimento foi conduzido em um esquema fatorial (2 x 5), composto pela inoculação de Fusarium oxysporum e Fusarium solani e por níveis de sombreamento. Verificou-se que as plantas submetidas aos menores níveis de sombreamento ou a pleno sol ficaram predispostas à doença.

Palavras-chave
estresse ambiental; fungos; luminosidade; patógenos de solo

 
 en Fusarium oxysporum check for this species in other resources and Fusarium solani check for this species in other resources inoculation and shading levels in the erva-mate: severity influence of the root-rot
Poletto, Igor; Muniz, Marlove Fátima Brião; Ceconi, Denise Ester; Araujo, Maristela Machado; Rodrigues, Johnathan & Mezzomo, Ricardo

Abstract

Ilex paraguariensis check for this species in other resources A. St.-Hill is a broadly cultivated species in the South of Brazil. With the increasing planted area, mainly in the last decade, fitosanitary problems caused by pest and diseases have increased in this crop, and the root-rot is becoming one of the main problems. Among the pathogens, Fusarium oxysporum check for this species in other resources Schlecht. and Fusarium solani check for this species in other resources (Mart.) Sacc are the main ones. These fungi provoke severe damages resulting in the destruction of the root system and, in the most serious cases, they cause the death of the plant. It is suspected that the incidence and severity of disease are influenced by cultivation of Ilex paraguariensis in different levels of shading or full sun. Therefore, experiments were conducted in the Forest Nursery area belonging to Forest Sciences Department/CCR/UFSM with the objective of confirming this assumption. The experiment was conducted in a factorial design (2 x 5), composed by Fusarium oxysporum and Fusarium solani inoculation and by shading levels. It was verified that the plants submitted to lower shading levels or full sun had their predisposed to the disease.

Keywords
stresses environmental; fungi; luminosity; soil pathogens

 
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