Journal of Taiwan Agricultural Research

Author:Yi-Fen Chu, Man-Hsia Yang, Shu-Fen Chang, Po-Hung Chen, and Tai-Chuan Wang*

Abstract:

    Coffee berry borer (Scolytidae: Hypothenemus hampei) is the most destructive pest in coffee industry worldwide. Recently the pest was as an in Taiwan and caused severe economic loss in planted areas. In this study, the composition of different development stages of the pest in coffee berries and control efficacy with different insecticides were investigated by direct spraying and fruit dipping methods. The all stages of coffee berry borer were found in the same infested berry and the female to male sex ratio was 13 : 1. The insecticides control efficacy by direct spraying showed the low morality in every treatment. The insecticides with the best control efficacy were carbaryl, chlorpyrifos, imidacloprid, and deltamethrin treatments after 24 h and 48 h, causing the morality at 11.1–26.7% and 11.1–28.9% separately. However, the insecticides with the best control efficacy were carbaryl, chlorpyrifos, imidacloprid, and spinotram treatments after 72 h treatments, causing the morality at 15.6–28.9%. Fruit dipping method showed chlorpyrifos and cartap hydrochloride treatments caused the highest morality at 86.7% and 73.3% after inoculating the coffee berry borer. However, comparing the infested fruit rate and infestation hole, cartap hydrochloride treatment had the lowest numbers at 6.7% and 1.7, while chlorpyrifos at 40.0% and 4.0, indicating cartap hydrochloride was the best insecticide to control coffee berry borer.

Key words:Coffee berry borer, Insecticides efficacy, Instars

Download: PDF Links