This study was conducted in coffee farms and a koa field in Kona and Oahu, Hawaii. We studied a) the seasonal fluctuation of BTB, b) the relative effectiveness of different attractants and repellents, and c) cultural and chemical practices (pruning and two formulations of imidacloprid, respectively). Infested coffee branches were collected from each farm to determine the presence of natural enemies. Ethyl alcohol vials were as effective as ethyl alcohol pouches, and were more effective than eugenol and α-pinene. BTB populations showed an aggregated distribution, were present all year round, and were found inside of coffee berries and coffee branches. Verbenone and limonene both significantly reduced trap catch of BTB. The predator beetle, Cryptamorpha desjardinsi, was found feeding on BTB inside the galleries. ProvadoŽ and AdmireŽ, two imidacloprid formulations, significantly reduced BTB infestation. Pruning and removal of branches also reduce BTB infestation, but are time consuming. Quantification of BTB population dynamics and the development of effective monitoring procedures enhanced BTB integrated pest management.
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