새로운 침투성 살균제 EL-291 (5-Methyl-1,2,4-tri-azolo(3, 4-b) benzothiazole, 수화제)의 벼 도열병 방제효과를 구명코저 온실검정과 포장시험을 실시하였다. EL-291은 병원균 접종후 살포보다 접종전 살포시 효과가 뚜렷하여 현저한 예방효과를 나타냈으나 가스가민, 벤레이트 상반된 반응을 나타내어 치료제로서 작용했다. 잎 도열병방제효과는 EL-291과 가스가민, 벤레이트간에 차이가 없었으나 이들 약제의 2회 살포에 비해 EL-291은 근침처리 또는 1회 살포한 것이므로 사용이 간편하고 경제적이라 할 수 있겠다. 이삭도열병에서도 1회 살포한 EL-291이 2회 살포한 가스가민, 벤레이트보다 월등히 효과가 좋았으며 수량도 EL-291 처리구가 더 많았다.

Experiments were carried out to determine the effectiveness of a new systemic fungicide EL-291 (5-Methyl-1, 2,4-triazolo (3,4-b) benzothiazole) for the control of rice blast disease in greenhouse and paddy field. The efficiency of EL-291 was much greater when applied before inoculation than when applied after inoculation. Kasugamin and Benlate were most effective as eradicants. For control of leaf blast, effectiveness of EL-291 was not significantly different than either Kasugamin or Benlate. However, EL-291 was considered more economical and reliable than either Kasugamin or Benlate. EL-291 required only a single foliar application or a transplant root soak, whereas two applications of the other fungicides were required. EL-191 was also more effective against panicle blast when applied only once, compared with two applications of Kasugamin or Benlate. The highest riceyields were obtained in plots treated with EL-29l

• 黃炳國
• 李銀鍾
• 朴昌錫
• 李庚徽