Control of Brontispa longissima (Gestro) (Coleoptera: Chrysomelidae) infestations in young coconut palms using Metarhizium anisopliae (Mets.) Sorokin and Beauveria bassiana (Balsamo) Vuillemin

Issue Date

10-2009

Abstract

The entomopathogenic fungi Metarhizium anisopliae (Mets.) Sorokin and Beauveria bassiana (Balsamo) Vuillemin were tested on larvae and adults of Brontispa longgisima (Gestro). Under laboratory conditions, the spraying of conidial suspensions of Metarhizium and beauveria resulted in 80-100% mortality of larvae and adults, respectively, at 6 days after treatment. Under field conditions, the spraying of conidial suspensions resulted in the reduction of pest density in young coconut palms by up to 80% and in percentage insect damage on emerging leaves by up to 70% 4-6 months after treatment. Stringent environmental conditions such as high relative humidity, low sunlight intensity and low air temperatures are critical for the success in the use of Metarhizium and Beauveria. In some cases, these were overcome by proper timing of spraying and increased conidial concentration. The use of entomopathogenic fungi is recommended for controlling Brontispa infestations in coconut palms from the nursery stage up to 5-6 years after field planting.

Source or Periodical Title

Philippine Entomologist

ISSN

0048-3753

Volume

23

Issue

2

Page

198-198

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

METARHIZIUM ANISOPLIAE; BEAUVERIA BASSIANA; COLEOPTERA; INSECTA; ENTOMOGENOUS FUNGI; PEST MANAGEMENT

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