行政院農業委員會台南區農業改良場  研究彙報第16號

甘藷潛葉蛾Bedellia ferenodes M之研究Ⅱ棲群消防治研究

顏福成

摘  要

一、甘藷潛葉蛾周年發生,以乾燥期之11∼3月間較多,尤以3月間為最多。雨期之6∼9月間較少。

二、本蟲為害,以夏作甘藷較為嚴重,秋裡作甘藷較輕。

三、西台灣中,以雲林縣及彰化縣海岸地帶發生較多。

四、本蟲在海拔1,405m之奮起湖尚有發生。

五、本蟲為害程度,依甘藷品種而稍有不同,概以莖葉淺綠色或寬葉品種被害較輕。

六、寄主有甘藷、甕菜、姬牽牛花、台灣牽牛花等4種植物。

七、本蟲天敵至目前發現者,有小繭蜂及黃腳攫螋等2種,以前者較多。

本蟲之防治,可用50%Sumithion E.C. 1,000倍或90%Lannate W.P. 1,800倍稀釋液。


Ecological Studies on Sweet potato leaf miner (Bedellia ferenodes)II Studies on the Population Dynamic of Sweet Potato Leaf Miner and its Control

F. C. Yen

Summary

1. Sweet potato leaf miner could be found all year round, especially in drought season in Taiwan.  The occurring season was from November to the coming March and reached a peak in March.  The population was lower in rainy season.

2. Sweet potato was caused more damage in summer crop than in fall crop.

3. The population of the miner was higher in both counties Chang-Hua and Yun-Lin than other places in Taiwan.

4. Even the sea level up to 1,400 m high, the miner could be found, too.

5. The different varieties prepared different degree of damages.  Where the varieties with light green leaves or broad leaf bald always caused less damage than the others.

6. The host plants of the miner were Ipomoea batatas, I. Oguatica, I. Obscura and I. Palmate, etc.

7. Up to now we found Apanteles s.p. and Enborellia pallipes as the natural enemies of the miner.

8.Fifty percent Sumithion EC 1000 parts of water dilution and 90% Lannate WP 1800 parts of water dilution were effective for controlling the miner.



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