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Efficacy of Acetamiprid 2% Granule against Green Peach Aphid on Cabbage by Various Soil Application Methods
Hidemitsu TAKAHASHI, Jun MITSUI, Makio YANO, Tomohiro TAKE, Makoto ASAI and Tomio YAMADA
J. Pestic. Sci.
24, 270-274 (1999)
The efficacy of acetamiprid 2% granule against the green peach aphid, Myzus persicae, on cabbage by various application methods was investigated. Planting hole, nursery box, row, over-all ridge and top dressing applications were tested as application methods. For the planting hole application, the efficacy of controlled- and uncontrolled-release formulations of acetamiprid was evaluated in two different soil type fields, Fujisawa and Kannami soil fields. Both granules of acetamiprid showed an excellent efficacy against the green peach aphid in Fujisawa and Kannami soil field at the dosage of I g/plant. The controlled-release granule of acetamiprid showed a high efficacy over 7 weeks after treatment in nursery box and planting hole applications at 0.5 g/plant. Row application at 3 kg/lOa and overall-ridge application at 6 kg/lO a also showed an outstanding efficacy against the insect over 5 weeks. The dosages of the insecticides in various application methods were designed to evaluate their efficacy against the diamondback moth, and it was confirmed that acetamiprid exhibited efficacy against the green peach aphid as well as against the diamondback moth. Moreover, it was also ascertained that uncontrolled- release granule possessed efficacy against the green peach aphid in top dressing application.
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