第滅寧與巴賽松粉劑混拌袋裝稻穀防治積穀害蟲效果評估

Evaluation of Deltamethrin and Phoxim Dust Mixed with Bagged Rough Rice for Control of Storage Insects

10.6660/TESFE.2000025

姚美吉(Me-Chi Yao)；羅幹成(Kang-Chen Lo)

積穀害蟲 ； 第滅寧 ； 巴賽松 ； 穀蠹 ； 麥蛾 ； stored-product insects ； deltamethrin ； phoxim ； Rhyzopertha dominica ； Sitotroga cerealella

中華昆蟲

20卷4期（2000 / 12 / 01）

I+255 - 266

繁體中文

本試驗在銅鑼農會之穀倉中進行藥效評估，第滅寧(deltamethrin)與稻穀均勻混拌配成0.73或1.1 ppm濃度後以袋裝儲藏，對穀蠹(Rhyzopertha dominica (Fabricius))均可持續有效防治達一年以上，全年平均防治率在99%。對麥蛾(Sitotroga cerealella (Olivier))的效果亦相似，全年平均防治率在96%。而巴賽松(phoxim)與稻穀混拌配成10 ppm濃度後以袋裝儲藏，有效防治穀蠹及麥蛾僅5個月，隨後穀蠹及麥蛾族群即明顯增長。無藥劑處理之對照組中以穀蠹及麥蛾為最主要害蟲族群，試驗後3個月逐漸有次級害蟲發生，在一年的試驗中共發現10種害蟲及兩種捕食性天敵。以第滅寧處理之稻穀，在試驗末期可發現到兩種天敵蹤跡，而巴賽松處理則完全無天敵。依藥劑對積穀害蟲防治效果及對天敵影響進行評估，值得推薦第滅寧應用於穀倉中防治穀蠹及麥蛾。

Control effects of deltamethrin and phoxim on insect pests in stored rice were evaluated in concrete bins at Tunglo, central Taiwan. Deltamethrin applied at two concentrations (0.73 or 1.1 ppm) were found valid for control of Rhyzopertha dominica (Fabricius) and Sitotroga cerealella (Olivier), repectively. The number of adults of these two insects decreased by ＞ 96%. The control effect could last for 5 months for these two specied of insects when phoxim was mixed rough rice at 10 ppm. Populations of these two insects increased rapidly thereafter. R. dominica and S. cerealella were the two dominant species of insects in grains with no insecticides. Totally two species of predatory insects and ten species of pest insects were found during the experimental period. Those two predators were found in deltamethrin-treated grains; however, no predator was found in phoxim-treated grains. Therefore it's recommended that deltamethrin be mixed with rough rice in bagged storage to control R. dominica and S. cerealella.