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http://dx.doi.org/10.5423/RPD.2009.15.2.094

Control of Bakanae Disease of Rice by Seed Soaking into the Mixed Solution of Procholraz and Fludioxnil  

Park, Woo-Sik (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
Choi, Hyo-Won (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
Han, Seong-Suk (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
Shin, Dong-Beum (Crop Environment Research Division, National Institute of Crop Science, RDA)
Shim, Hyeong-Kwon (Bioenergy Crop Research Center, National Institute of Crop Science, RDA)
Jung, En-Seon (Variety Testing Division, Korea Seed & Variety Service)
Lee, Se-Weon (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
Lim, Chun-Keun (Division of Bio-Resources Technology, College of Agriculture and Life Science, Kangwon National University)
Lee, Yong-Hwan (Agricultural Microbiology Division, National Academy of Agricultural Science, RDA)
Publication Information
Research in Plant Disease / v.15, no.2, 2009 , pp. 94-100 More about this Journal
Abstract
These experiments were conducted to improve the effect of seed disinfection on rice seed severely infected Bakanae disease by seed soaking into mixed solution of prochloraz EC and fludioxonil FS. We investigated the effects of various concentrations of two fungicides mixed solution on spore germination and mycelial growth of Fusarium fujikuroi. Mycelial growth was inhibited 100% at $10{\mu}g$/ml of prochloraz and 33.3% at $80{\mu}g$/ml of fludioxonil. Spore germination was inhibited 81.4% at $40{\mu}g$/ml of prochloraz. Interestingly, mixed solution of $5{\mu}g$/ml or $10{\mu}g$/ml of each fungicide inhibitied 100% of mycelial growoth and 99.2% of spore germination, respectively. Severely infected rice seeds soaked into mixed solution composed of $125{\mu}l$/ml of prochloraz and $50{\mu}l$/ml of fludioxonil showed 2.1% of disease symptoms compared to 20.4% of prochloraz $125{\mu}l$/ml, but higher concentrations of prochloraz decreased the seedling stand rate. When the seed soaking time was longer and temperature was higher, control effect on Bakanae disease was improved, but seedling stand was lower about 80% over $35^{\circ}C$.
Keywords
Bakanae disease; Fludioxonil; Mixing solution; Prochloraz; Rice;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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