본 시험은 1968년에 배나무 신초를 지사케 하는 배나무줄기벌을 구제하기 위하여 Dimecron, Lebaycid, Metayrtox, Endrin, Dieldrin, Sevin, Folidol, Dipterex, Fussol, Malathion, EPN, DDVP, D.S. Folithion, Cidial등의 약제를 사용하여 그 살충효과를 시험한 것이다. 1. 농약의 종류간과 처리일자간에는 모두 유의성이 있다. 2. 비교적 살충효과가 있는 것은 Dimecron, Lebaycid, D.S. Endrin, Metasystox, DDVP이며, 특히 Dimecron과 Lebaycid를 부화당일이나 부화후 4일에 살포하는 것이 가장 큰 방제효과를 보여주었다

At Nowan Myun and Bia Myun of Cholla-namdo the pear stem sawflies were found as the most serious pests of the pear trees. The writer attempted to control the pear stem sawfly by spraying certain insecieides in 1968. 1) The significance of each chemical applicated turned out to be as shown in Table 2 and 3. The priority of effectiveness among the chemicals turned out to be as follows: Dimecron>Lebaycid>D. S. >Endrin>Metasystox>DDVP 2) It was also found that the significance vary according to the difference in time of application of the insecticides as shown in Table 2 and 3. Dimecron and Lebaycid were found to be most effective at the hatching day and the 4th day after the hatching.

• 尹柱敬