The Korean Journal of Pesticide Science (농약과학회지)

The Korean Society of Pesticide Science (한국농약과학회)
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Effect of Microbial Agent on Control of Tomato Gray mold and Powdery mildew

미생물제 처리에 의한 토마토의 잿빛곰팡이병과 흰가루병의 방제효과

  • Kim, Tack-Soo (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Ko, Min-Jung (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Se-Weon (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Han, Ji Hee (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Park, Kyungseok (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) ;
  • Park, Jin-Woo (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration)
  • 김택수 (국립농업과학원 농업미생물과) ;
  • 고민정 (국립농업과학원 농업미생물과) ;
  • 이세원 (국립농업과학원 농업미생물과) ;
  • 한지희 (국립농업과학원 농업미생물과) ;
  • 박경석 (국립농업과학원 농업미생물과) ;
  • 박진우 (국립농업과학원 농업미생물과)
  • Received : 2012.11.03
  • Accepted : 2012.12.15
  • Published : 2012.12.31
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Abstract

In vivo experiments were carried out to investigate the effect of microbial agents on tomato disease occurrences in a sustainable tomato farm in Gong-ju, Chung-nam during 2 years (2010-2011). Two kind of commercial microbial agents (EXTN-1 and Cillus suspension concentrate) and 2 kind of microbial agents (Bacillus subtilis strain 'B4' and 'B17') developing by National academy of agricultural science were used in this study. In the 1st experimental year, the microbial agents were sprayed on leaves for 2-4 times at 1-2 weeks interval from 3 weeks after transplanting, and then disease occurrence were observed. As a result, the control efficacies of commercial EXTN-1 and Cillus suspension concentrate (SC) against gray mold were 59.6% and 50.5% in the treatment of 4 times foliar application at 1 week interval from 3 weeks after transplanting, and the control efficacy of commercial EXTN-1 SC against gray mold was 55.4% in the treatment of 3 times foliar application at 1 week interval from 4 weeks after transplanting. However, the control efficacies of EXTN-1 and Cillus SC were not enough for tomato crop protection against powdery mildew. In the 2nd experimental year, the microbial agents were treated following by the planned combination schedule of transplanting stage drip-watering, early stage root irrigation and early blooming stage foliar application. The control efficacies of EXTN-1 SC and B17 treatment following by transplanting stage drip-watering, 2 times root irrigation at 2 weeks interval root irrigation and 4 times foliar application at 1 weeks interval for gray mold management were 57.0 and 55.1%, respectively. In the case of same treatment for gray mold management mentioned at above, the control efficacies of EXTN-1 SC, B4 and B17 treatment for powdery mildew management were 50.5, 51.3 and 52.5%, respectively.

미생물제제의 토마토의 병 발생에 미치는 영향을 조사하고자 2010~2011년에 걸쳐 공주의 친환경 토마토 재배농가에서 현장실증시험을 수행하였다. 친환경 미생물제제로 시판되는 EXTN-1 액상수화제 등 2종의 미생물제제와 농과원에서 개발 중인 2종의 미생물을 토마토 정식시 점적관수 및 뿌리 관주처리와 착화 초기 4회 경엽처리한 후 생육과 병 발생 정도를 조사하였다. 2010년에는 잿빛곰팡이병에 대해 정식 3주 후 1주일 간격으로 EXTN-1 액상 수화제와 씰러스 액상수화제를 4회 처리한 경우 방제가가 59.6%, 50.5%로 가장 높았으며, 정식 4주 후 1주일 간격으로 EXTN-1 액상수화제를 3회 처리한 경우의 방제가는 55.4%였지만 모든 처리구에서 흰가루병에 대한 효과는 저조하였다. 2011년에는 잿빛곰팡이병에 대해 EXTN-1과 Bacillus subtilis strain B17을 정식시 점적관수와 2주 간격 관주처리 2회 및 착화 초부터 경엽처리 4회를 한 결과 방제가가 57.0%와 55.1%로 가장 높았으며, 흰가루병에 대해서는 EXTN-1과 Bacillus subtilis strain B4 및 B17을 잿빛곰팡이병의 경우와 동일하게 처리한 경우 방제가가 50.5, 51.3, 52.5%로 가장 높았다.

Keywords

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