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http://dx.doi.org/10.7585/kjps.2014.18.4.409

Control Efficacy of Mixed Application of Microbial and Chemical fungicides against Powdery mildew of red-pepper  

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)
Publication Information
The Korean Journal of Pesticide Science / v.18, no.4, 2014 , pp. 409-416 More about this Journal
Abstract
This study was conducted to reduce the using amount of chemical fungicides for the control of red-pepper powdery mildew. Effect of combined application of three microbial fungicides and six chemical fungicides for the control of red-pepper powdery mildew was examined in vitro, in pot assay and under field condition. One chemical fungicide (Azoxystrobin+Chlorothalonil) among six chemical fungicides significantly suppressed three microbial fungicides (Bacillus subtilis Y1336, Bacillus subtilis DBB1501, Bacillus subtilis QST-713) registered for the control of pepper powdery mildew in vitro. In the pot assay, two mixed application such as B. subtilis DBB1501+Trifloxystrobin, B. subtilis QST713+Trifloxystrobin among nine mixed applications of three microbial fungicides and three chemical fungicides showed the highest suppressive effect against red pepper powdery mildew. Also, suppressive effect of the mixed application of B. subtilis QST713 and Trifloxystrobin was similar to that of single application of three chemical fungicides(Myclobutanil, Trifloxystrobin, Hexaconazole). In the field test, when the microbial fungicides (B. subtilis DBB1501, B. subtilis QST713) and the chemical fungicide (Trifloxystrobin) for the control of powdery mildew of red pepper were mixed foliar sprayed four times at 7 day-intervals, the control values were in the range of 70.3% to 70.9%. On the other hand, when each of the chemical fungicide (Trifloxystrobin) was foliar sprayed four times at 7 day-intervals, the control value was 72.7%. Consequently, the mixed application of the microbial fungicides and chemical fungicides could be recommended as a one of control measures for reducing the using amount of chemical fungicides.
Keywords
Powdery mildew; microbial fungicides; chemical fungicides; combined applications; red pepper;
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Times Cited By KSCI : 10  (Citation Analysis)
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