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Control Efficacy of Mixing Application of Microbial and Chemical fungicide against Phytophthora blight of red-pepper

미생물농약과 유기합성 살균제 혼용에 따른 고추 역병 방제 효과

  • Hong, Sung-Jun (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Kim, Jung-Hyun (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Kim, Yong-Ki (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Jee, Hyeong-Jin (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Shim, Chang-Ki (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Kim, Min-Jeong (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Park, Jong-Ho (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Han, Eun-Jung (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA) ;
  • Goo, Hyung-Jin (Gimpo-city Agricultural Technical Center) ;
  • Choi, Kwang-Young (Pocheon-city Agricultural Technical Center) ;
  • Yun, Jong-Chul (Organic Agriculture Division, National Academy of Agricultural Science(NAAS), RDA)
  • 홍성준 (국립농업과학원 유기농업과) ;
  • 김정현 (국립농업과학원 유기농업과) ;
  • 김용기 (국립농업과학원 유기농업과) ;
  • 지형진 (국립농업과학원 유기농업과) ;
  • 심창기 (국립농업과학원 유기농업과) ;
  • 김민정 (국립농업과학원 유기농업과) ;
  • 박종호 (국립농업과학원 유기농업과) ;
  • 한은정 (국립농업과학원 유기농업과) ;
  • 구형진 (김포시농업기술센터) ;
  • 최광영 (포천시농업기술센터) ;
  • 윤종철 (국립농업과학원 유기농업과)
  • Received : 2013.11.12
  • Accepted : 2013.12.20
  • Published : 2013.12.31

Abstract

This study was conducted to reduce the using amount of chemical fungicides for the control of red-pepper Phytophthora blight. Effect of combination application of two microbial fungicides and two chemical fungicides for the control of red-pepper Phytophthora blight was examined in vitro, in greenhouse and under field conditions. Each microbial fungicides and chemical fungicides was two-fold diluted and mixed-soil drenched. In the greenhouse pot assay, the mixed application of B. pumilus QST2808 and a mixture of dimethomorph + ethaboxam (De) among four mixed applications of two microbial fungicides (B. pumilus QST2808, P. polymyxa AC-1) and two chemical fungicides showed the highest control effect against Phytophthora blight. Also, control effect of mixed application of B. pumilus QST2808 and De was similar to that of single application of De (dimethomorph + ethaboxam) or Mo (mancozeb + oxadixyl). In the field test, when the microbial fungicides (B. pumilus QST2808, P. polymyxa AC-1) and the chemical fungicide(De) for the control of Phytophthora blight of red pepper were mixed-soil drenched four times at 7~10 day-intervals, the control values were in the range of 78.8% to 82.0%. On the other hand when each of the two chemical fungicides (De, Mo) were soil drenched four times at 7~10 day-intervals, the control value were 65.7% to 85.8%. Consequently, the mixed application of the microbial fungicides and chemical fungicides could be recommended as a control method for reducing the using amount of chemical fungicides.

Acknowledgement

Supported by : 국립농업과학원

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