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논문 기본 정보

자료유형
학술저널
저자정보
Han, Ji Hee (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) Jin, Byung Rae (College of Natural Resources and Life Science, Dong-A University) Kim, Jeong Jun (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration) Lee, Sang Yeob (Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration)
저널정보
한국균학회 Mycobiology Mycobiology 제42권 제4호
발행연도
2014.1
수록면
385 - 390 (6page)

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초록· 키워드

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The beet armyworm Spodoptera exigua (Lepidoptera: Noctuidae) is difficult to control using chemical insecticides because of the development of insecticide resistance. Several pest control agents are used to control the beet armyworm. Entomopathogenic fungi are one of the candidates for eco-friendly pest control instead of chemical control agents. In this study, among various entomopathogenic fungal strains isolated from soil two isolates were selected as high virulence pathogens against larva of beet armyworm. Control efficacy of fungal conidia was influenced by conidia concentration, temperature, and relative humidity (RH). The isolates Metarhizium anisopliae FT83 showed 100% cumulative mortality against second instar larvae of S. exigua 3 days after treatment at $1{\times}10^7$ conidia/mL and Paecilomyces fumosoroseus FG340 caused 100% mortality 6 days after treatment at $1{\times}10^4$ conidia/mL. Both M. anisopliae FT83 and P. fumosoroseus FG340 effectively controlled the moth at $20{\sim}30^{\circ}C$. M. anisopliae FT83 was significantly affected mortality by RH: mortality was 86.7% at 85% RH and 13.4% at 45% RH. P. fumosoroseus FG340 showed high mortality as 90% at 45% RH and 100% at 75% RH 6 days after conidia treatments. These results suggest that P. fumosoroseus FG340 and M. anisopliae FT83 have high potential to develop as a biocontrol agent against the beet armyworm.

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