常用殺蟎劑對二點葉蟎（Tetranychus urticae Koch）之防治效果

Control Effect of Some Common Miticides Against Two-spotted Spider Mite, Tetranychus urticae Koch

劉達修(Ta-Shiu Liu) ； 王文哲(Wen-Jer Wang)

《臺中區農業改良場研究彙報》 39期 (1993/06) Pp. 1-15

https://doi.org/10.6956/BTDAIS.199306.0001

摘要

為探討目前常用殺蟎劑對二點葉蟎（Tetranychus urticae Koch）之殺蟎效果，本報告乃針對菊花、玫瑰、草莓及西瓜上之二點葉蟎於室內及田間分別進行藥效試驗。供試22種藥劑及5種其他物質，對菊花上二點葉蟎之幼蟎、若蟎、成蟎及卵均有佳效的藥劑有42%大克蟎（Dicofol）乳劑800倍、57%歐蟎多（Propargite）乳劑2,000倍、38%得氯蟎（Dienochlor）水懸劑1,500倍、25%蟎離丹（Oxythioquinox）可濕性粉劑500倍及20% Pyranica可濕性粉劑2,000倍等6種。其殺蟎及殺卵率多在90%以上；次為25%滅多松（Oxydemeton methyl）乳劑1,000倍、2.8%畢芬寧（Bifenthrin）乳劑1,000倍及25%亞環鍚（Azocyclotin）可濕性粉劑1,500倍。對玫瑰上二點葉蟎較有效者有57%歐蟎多（Propargite）乳劑2,000倍、25%蟎離丹（Oxythioquinox）可濕性粉劑500倍、2.8%畢芬寧（Bifenthrin）乳劑1,000倍、50%覆滅蟎（Formetanate）可溶性粉劑1,000倍及Action Reserch 1,000倍等5種藥物，該等藥物對玫瑰上二點葉蟎之成、若蟎及幼蟎之防治率均在90%以上，對卵則稍差；次為25%亞環鍚（Azocyclotin）可濕性粉劑1,500倍、10%合賽多（Hexythiazox）可濕性粉劑4,000倍等2種殺蟎劑。對草莓上二點葉蟎，新藥劑5%芬普蟎（Fenpyroximate）水懸粉劑及2%阿巴汀（Abamectin）乳劑各稀釋1,000及2,000倍，對二點葉蟎的成、若蟎及卵均有極優異之藥效，正式推薦後可供草莓葉蟎輪流施用，其安全性甚高。對西瓜上二點葉蟎以2%阿巴汀（Abamectin）乳劑2,000倍及優利二號有機肥250倍之殺蟎率達100%及93.5%。綜合上述結果，多數常用殺蟎劑目前對菊花、玫瑰、草莓上之二點葉蟎仍有佳效，只要把握施藥時期，以上述數種藥劑輪流使用，對二點葉蟎之控制應無問題。

關鍵字

殺蟎劑 ； 二點葉蟎 ； 防治

並列摘要

The two-spotted spider mite, Tetranychus urticae Koch, is a cosmopolitan mite. It reproduces very rapidly and can also develop resistance to chemicals easily. This paper describes our effort in testing, in laboratory and field, the efficacy of some common miticides against the two-spotted spider mites on chrysanthemum, roses and strawberry. Among the 22 pesticides and 5 non-pesticidal materials tested, the following had good effect (＞90% mortality) against the eggs, larvae, nymphs and adults of this mite on chrysanthemum: 42% Dicofol E.C. (800-fold), 57% Propargite E.C. (2000-fold), 38% Dienochlor F. (1500-fold), 25% Oxythioquinox W.P. (500-fold) and 20% Pyranica W.P. (2000-fold). In addition, 25% Oxydemeton methyl E.C. (1000-fold), 2.8% Bifenthrin E.C. (1000-fold) and 25% Azocyclotin E.P. (1500-fold) were also effective. Effective against the two-spotted spider mites on roses were 57% Propargite E.C. (2000-fold), 25% Oxythioquinox W.P. (500-fold), 2.8% Bifenthrin E.C.(1000-fold), 50% Formetanate S.P.(1000-fold) and Action Research (1000-fold). They produced ＞90% control of nymphs and larvae of this spider mite on roses; their ovicidal activity was somewhat less. Besides, 25% Azocylcotin W.P.(1500-fold) and 10% Hexythiazox W.P. (4000-fold) were also effective. To the eggs, nymphs and adults of the two-spotted spider mites on strawberry, 5% Fenpyroximate F. (1000-fold) and 2% Abamectin E.C. (2000-fold) had excellent control effect. These two compounds, when officially recommended, could be used safely on strawberry for the control of this spider mite. For the control of the two-spotted spider mites on watermelon, 2% Abamectin E.C. (2000-fold) and organic fertilizer Iou-lih No.2 (250-fold) gave 100% and 93.5% control, respectively. The above results showed that most miticides currently used on chrysanthemum, rose and strawberry remain quite effective against the two-spotted spider mites. With proper timing and a rotational application of these pesticides, the two-spotted spider mites can be put under control.

並列關鍵字

miticides ； two-spotted spider mite ； control