Abstract
ABSTRACT Jatropha curcas L. has been studied with the aim of attending the bioenergy demand in Brazil. In this study, the time of occurrence, the severity, and the control of powdery mildew and rust in a commercial crop were investigated. During the evaluation period, powdery mildew was first observed soon after the onset of the raining period in October. Rust was first observed in April. Metarhizium anisopliae. Azadirachta indica oil, J. curcas oil, and the fungicide triadimenol were efficient in controlling powdery mildew. None of these products nor potassium silicate did control rust.
Highlights
Jatropha curcas L. tem sido estudada com o objetivo de atender a demanda por bioenergia no Brasil
Diseases like rust caused by Phakopsora arthuriana Buriticá & Hennen (4) and powdery mildew (PM) caused by Oidium sp
Results showed that PM in J. curcas is favored by the dry season, as observed for other hosts (5)
Summary
Jatropha curcas L. tem sido estudada com o objetivo de atender a demanda por bioenergia no Brasil. Metarhizium anisopliae, óleo de Azadirachta indica, óleo de J. curcas e o fungicida triadimenol foram eficientes no controle do oídio. The aim of this study was to evaluate the occurrence of diseases affecting J. curcas and the efficiency of some natural and chemical products in their management.
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