Management Strategies of New Invasive Insect Pests of Landscape Plants in Hawai‘i.
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2018-05
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Landscape plants provide beneficial effects such as increasing air quality, promoting mental health, and improving aesthetics. The need to have effective control methods for pests is important to maintain these benefits. This study investigated manamgent tactics for Oryctes rhinoceros, Josephiella spp., and Paratachardina pseudolobata, pests that attack important landscape plants in Hawaiʻi including coconut palm, Chinese banyan and weeping banyan. Various systemic insecticides were tested on O. rhinoceros in the laboratory. The highest percent of affected beetles were observed in acepahte and imidacloprid treatments. Irrigation did not impose negative impacts on insecticide efficacy and followed similar trends to insecticide treatmetns alone against banyan pests. A comparative study on different systemic application methods on controlling P. pseudolobata found that both injection and soil drench were effective at suppressing P. paratachardina.
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