甘藷潛葉蛾Bedellia ferenodes M之研究Ⅱ棲群消防治研究
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
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.