Residues and Half-lives of Bitertanol and Tebuconazole in Greenhouse-Grown Peppers

시설재배 고추중 Bitertanol 및 Tebuconazole 잔류양상

  • Seong, Ki-Yong (National Agricultural Products Quality Management Service, Research & Experiment Institute, NAQS) ;
  • Jeong, Mong-Hee (National Agricultural Products Quality Management Service, Research & Experiment Institute, NAQS) ;
  • Hur, Jang-Hyun (Division of Biological Environment, Kangwon National University) ;
  • Kim, Jeong-Gyu (Division of Environmental Sciences and Ecological Engineering, College of Life and Environmental Sciences, Korea University) ;
  • Lee, Kyu-Seung (Department of Agriculture Chemistry, Chungnam National University) ;
  • Choi, Kyu-Il (National Agricultural Products Quality Management Service, Research & Experiment Institute, NAQS)
  • 성기용 (국립농산물품질관리원 시험연구소) ;
  • 정몽희 (국립농산물품질관리원 시험연구소) ;
  • 허장현 (강원대학교 자원생물환경학부) ;
  • 김정규 (고려대학교 생명환경과학대학 환경생태공학부) ;
  • 이규승 (충남대학교 농화학과) ;
  • 최규일 (국립농산물품질관리원 시험연구소)
  • Published : 2004.03.31

Abstract

Persistence of the triazole fungicides, bitertanol and tebucnazole was investigated after their application at recommended and double rate on greenhouse-grown peppers. The half-life of bitertanol and tebuconazole on peppers at recommended and double rate was $5.2{\sim}6.1$ and $4.6{\sim}5.2$ days, respectively. Half-lives of bitertanol and tebuconazole on pepper leaves $(16.8{\sim}22.5\;days)$ was longer than those in the peppers. Residual concentration of bitertanol and tebuconazole on pepper leaves 24 days after application were 10.1 and 17.5 mg/kg, respectively, and these levels were higher than MRL which had been established at 3.0 and 5.0 mg/kg in Korea. Pattern of dissipation was well fitted to the first-order kinetics. In household washing experiment with surfactant, dislodgeable portions on pepper leaves of bitertanol and tebuconazole were occupied 36% and 48% of the residues found 24 days after application.

시설재배 고추중 tiazole계 살균제 bitertanol과 tebuconazole에 대하여 안전사용기준의 추천량과 배량을 포장에 살포 후 잔류농약의 감소양상을 조사하였다. 고추중 bitertanol의 반감기는 $5.2{\sim}6.1$일 이었고, tebuconazole은 $4.6{\sim}5.2$일로 나타났다. 고추잎에서의 반감기는 bitertanol은 $19.1{\sim}22.5$일 이었고, tebuconazole은 $16.7{\sim}20.8$일로 나타나 고추에 비해 반감일수가 $3{\sim}5$배 증가하였다. 고추잎에서 약제살포 24일 경과후 bitertanol과 tebuconazole의 잔류량은 10.1 mg/kg, 17.5 mg/kg으로 나타났는데, 이는 고추잎에 대한 Maximum Residue Limit(MRL) 3.0 mg/kg, 5.0 mg/kg을 크게 넘는 수치로 조사되었다. 시설재배 고추와 고추잎에서의 경시변화는 1차 회귀방정식에 부합하였으며, 고추잎에서의 엽면잔류량(Dislodgeable Foliar Residues, DFRs)은 24일 경과후 각각 36%, 48%가 소실되는 것으로 나타났다. 세척방법에 의한 잔류농약의 감소량을 조사한 결과 세제 사용시의 평균제거율을 bitertanol은 72.4%, tebuconazole은 72.2%로 나타났고, 일반 수돗물 사용시에는 bitertanol 60.3%, tebuconazole 61.5%로 나타났다.

Keywords

References

  1. Ryu, K. 0. and Lee, S. S. (1998) In New illustrated book of vegetables. Herbworld Publishing Co. Seoul, Korea, p. 242
  2. National Agricultural Products Quality Management Services (NAQS) The survey plan of agricultural products (2003), pp. 1-34
  3. Kim, Y. S., Park, J. H., Park, J. W., Lee, Y. D., Lee, K. S and Kim, J. E. (2002) Persistence and dislodgeable residues of chlorpyrifos and procymidone in lettuce leaves under greenhouse condition. Korean J. Envimn. Agric. 21, 149-155 https://doi.org/10.5338/KJEA.2002.21.2.149
  4. Choi, K. I., Seong, K. Y, Jeong, T. G., Lee, J. H., Hur, J. H., Ko, K. Y. and Lee, K. S. (2002) Dissipation and removal rate of dichlofluanid and iprodione residues on greenhouse cherry tomato. Korean J. Envimn. Agric. 21, 231-236 https://doi.org/10.5338/KJEA.2002.21.4.231
  5. Kim, Y. S., Park, J. H., Park, J. W., Lee, Y. D., Lee, K. S. and Kim, J. E. (2003) Residue levels of chlorpyiifos and chlorothalonil in apples at harvest. Korean J. Environ. Agric. 22. 130-136 https://doi.org/10.5338/KJEA.2003.22.2.130
  6. Tomlin, C. D. S (2000) The pesticide manual. (12th ed.) British Crop Protection Council, UK
  7. Antonious, G. R, Byers, M. E. and Snyder, J. C. (1998) Residues and fate of endosulfan on field-grown pepper and tomato. Pestic. Sci. 54, 61-67 https://doi.org/10.1002/(SICI)1096-9063(199809)54:1<61::AID-PS780>3.0.CO;2-M
  8. Antonious, G. F. (2001) Persistence and performance of esfenvalerate residues on broccoli. Pest Manag Sci. 58, 85-91 https://doi.org/10.1002/ps.420
  9. Korea Crop Protection Association (KCPA) (2003) The Pesticide Use Guidelines, pp. 116-221
  10. Valverda, M., Aguilera, A., Rodriguez, M., Bourad, M. and Begrani, M. S-El. (2002) Pesticide residue levels in peppers grown in a greenhouse after multiple applications of pyridaben and tralomethhn. J. Agric. Food Chem. 50, 7303-7307 https://doi.org/10.1021/jf0205209
  11. Ko, K. Y, Lee, Y. J., Won, D. J., Park, H. J. and Lee, K. S. (2003) Residual pattern of procymidone and bifenthrin in perilla leaf during the period of cultivation and storage. Korean J. Envimn. Agric. 22, 47-52
  12. Ecobichon, D. J. (1999) In Occupational hazards of pesticide exposure; sampling, monitoring, measuring. Taylor & Francis Press, Philadelphia, pp. 51-80
  13. Schenck, F. J., Lehotay, S. J. and Vega. V. (2002) Compahsion of solid-phase extraction sorbents for cleanup in pesticide residue analysis of fresh fruits and vegetables. J. Sep. Sct. 25, 883-890 https://doi.org/10.1002/1615-9314(20021001)25:14<883::AID-JSSC883>3.0.CO;2-7
  14. Ripley, B. D., Ritcey, G. M., Hams, C. R., Demomme, M. A. and Brown, P. D. (2001) Pyrethroid insecticide residues on vegetable crops. Pest. Manag. Sci. 57, 683-687 https://doi.org/10.1002/ps.325
  15. Lee, M. K. and Lee, S. R. (1997) Reduction factors and risk assessment of organophosphorus pesticides in korean food. Korean J. Food Sci. Technol. 29, 240-248
  16. Lee, H. K., Kim, Y. K. and Park, Y. S. (1988) A monitoring survey on pesticide residues in strawberries and cucumbers from plastic film house. Kor. J. Food Hygiene 3, 193-202
  17. Kim, T. H., Lee, J. Y, Yu, Y. M. and Kim, J. E. (2003) Residues of a new fungicide, KNF 1002 in cucumber and pepper. Korean J. Environ. Agric. 22, 227-232 https://doi.org/10.5338/KJEA.2003.22.3.227