• Title/Summary/Keyword: 농약잔류

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Changes of pesticide residues in bagged pear and bagging paper during the field and storage (재배 및 저장기간 중 유대재배 배의 농약잔류량 변화)

  • Ihm, Yang-Bin;Kyung, Kee-Sung;Park, Young-Sup;Lee, Hee-Dong;Kim, Jin-Bae;Im, Gun-Jae;Ryu, Gab-Hee
    • The Korean Journal of Pesticide Science
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    • v.6 no.4
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    • pp.293-299
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    • 2002
  • This experiment was conducted to elucidate the effects of fruit bagging on the amounts of pesticide residues on/in pears with two pesticides, chlorpyrifos 25% WP, and penconazole 5% WP, and two pear cultivars, Niitaka and Hwangeum-bae. Residues of chlorpyrifos and penconazole in bagged pears were only $0.4{\sim}27%$ of those in non-bagged one. Residues of both pesticides in bagged and non-bagged pears were steeply reduced in the field but slowly reduced during storage. Residues of chlorpyrifos were more in the peel than in the flesh, while penconazole in bagged pear was evenly distributed in the peel and flesh. Chlorpyrifos was evenly distributed in outer bag and inner bag irrespective of bag materials, while most of penconazole was found in outer bag rather than in inner bag. To produce safer pear from pesticide residues, removal of bag before storage is recommended.

Analysis of pesticide residues on sweet persimmon harvested from systemized orchards for exporting to USA (대미수출을 위한 병해충 방제 체계 적용 농약살포 단감원에서 수확한 단감의 잔류 농약량 조사)

  • Kim, Young-Sub;Choo, Ho-Yul;Park, Chung-Gyoo;Lee, Dong-Woon
    • The Korean Journal of Pesticide Science
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    • v.9 no.2
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    • pp.166-172
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    • 2005
  • Temporary control schedules were tested at sweet persimmon orchards to development new control programs to meet the quarantine requirements of USA in 2002. The 'USA export-type control orchards' were spayed with pesticides (azoxystrobin, carbaryl, cyhexatin, fenarimol, mancozeb, methoxyfenozide, spinosad and trifluxistrobin) which were possibly adaptable to the poem trees in USA. Pesticide residues in the sweet persimmon fruits harvested from USA export-type control orchards were analyzed. Azoxystrobin, mancozeb, trifloxystrobin, spinosad, carbaryl, and cyhexatin were not detected by the experimental methods. The residues of fenarimol and methoxyfenozide in sweet persimmon of USA export-type control orchards were 0.016-0.020 ppm and 0.022-0.029 ppm, respectively. These levels are quite below the maximum residue limit level of USA (below 0.1 ppm in fenarimol and 7 ppm in methoxyfenozide). These results suggest that new control programs could be developed by modifying the USA export-type control schedule tested in this study to meet the quarantine requirements of USA, if we could suppress the damage of plant bugs.