Evaluation of Phosphine Efficacy on Anoplophora chinensis and A. glabripennis in Export Bonsai
2018
Lee, S.M., SMBioVision Co, Jinju, Republic of Korea | Jung, Y.H., SMBioVision Co, Jinju, Republic of Korea | Lee, B.H., Gyeongsang National University, Jinju, Republic of Korea | Kim, B.S., Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Park, M.G., Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea | Lee, D.W., Kyungpook National University, Sangju, Republic of Korea
Anoplophora chinensis and A. glabripennis is classified as important quarantine Cerambycidae beetles worldwide. These beetles cause serious damage on natural host plants and export bonsai trees in Korea. We evaluated efficacy of phosphine fumigant for control of two Cerambycidae beetles in bonsai. In the preliminary test to achieve CT (Concentration x time) values of phosphine to Cerambyicdae beetles larvae, we used Monochamus alternatus of larvae as an alternative insect. A 24 h phosphine fumigation with 2 g/m3 phophine achieved 100% eggs mortality against Anoplophora chinensis and A. glabripennis. Larva of A. chinensis was also completely controlled when treated for 168-h at same dose desiccator. 100% mortality on larval stage of two beetle species were achieved both in dormancy (January) and vegetative period (February) of bonsai when treated with 2 g/m3 phosphine. However, phosphine fumigation against vegetative period of Acer palmatum, Carpinus turczaninowii and Malus sieboldii bonsai showed slight phytotoxicity (shorten leaf and flower size and delayed flowering).
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