斜紋夜盜蛾性費洛蒙合成劑田間試驗
Other Title
Field Evaluation of Sex Pheromones of Spodoptera litura
Journal
中華農業研究
Journal Volume
28
Journal Issue
4
Pages
273-278
Date Issued
1979-12-06
Date
1979-12-06
Author(s)
邱瑞珍
錢景秦
Shui-Chen Chiu
Ching-Chin Chien
Abstract
民國64 與65 年在臺北大豆田，以斜紋夜盜蛾性費洛蒙合成劑cis -9 , trans -11 -tetrade - cadienyl acetate （化合物A ）與cis -9 , trans -12 -tetradecadienyl acetate （化合物B）依A : B 二15 : 1 與A : B = 10 : 1 兩種比例混合，各分1 , 2 及3 mg 之劑量與對照組採用濕式誘集裝置進行田間試驗。不論A 與B 為15 : 1 或10 : 1 對雄蛾均有非常顯著之誘集效果，但A : B 為15 : 1 時，3 種劑量間之差異不顯著；A : B 為10 : 1 時，劑量1 mg 與2 mg 間差異不顯著，但與3 mg 卻有差異。夏季不加抗氧化劑（Antioxidant）時，誘劑之時效可維持70 天以上。該蛾活動多在黃昏至午夜間，故該劑之誘集效果頗受當時溫度與雨量之影響。
Two synthetic sex pheromones of Spodoptera litura (Lepidoptera : Noctuidae) ; cis-9, trans-11-tetradecadienyl acetate (Litlure A) and cis-9, trans-12-tetradecadienyl acetate (Litlure B) were evaluated in two field experiments, during November- December 1975 and June-August 1976. Eight traps in 0.08 ha with mixture in the ratio of litlure A to litlure B 15: 1 were set at the distance of 7 m between 2 traps. 7 traps in 0.13 ha with mixture in the ratio of litlure A to litlure B 10: 1 were set at the distance of 20 m between 2 traps. Two pheromone mixtures were dosed in 1, 2 and 3 mg each per trap. They were placed in polyethylene cap attached to a handle of plastic bucket filled with 4 liters soap water. Such traps were placed in soybean fields at the National Taiwan University, Taipei. The number of male moths in soap water were counted daily.
Results indicated that the pheromones, at both mixture ratios, showed significant attractiveness for the male S. litura moths. A total of 467 and 1,258 moths were captured in 15 : 1 and 10: 1 mixtures respectively, as against one and none in each of the two check bucket traps. There was no significant difference in attractiveness among the 3 dose concentrations tested in 15 : 1 mixture, but the attractiveness of 10 : 1 mixture was significantly lower with the dosage of 3 mg than 1 or 2 mg. The 10 : 1 mixture was effective for more than 70 days during June-August. Effectiveness of pheromone was reduced when temperature dropped to 12°C or rainfall execcded 38 mm.
Publisher
農業試驗所
Type
journal article
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