Enhancement of Physical Properties and Efficacy of Pesticide Spray Solution by Addition of Adjuvants

Adjuvant에 의한 농약살포액의 물리성 개선 및 약효증진 효과

  • Jin, Yong-Duk (Harzardous Substances Division, National Academy of Agricultural Science, RDA) ;
  • Lee, Hee-Dong (Pesticide Safety Division, National Academy of Agricultural Science, RDA) ;
  • You, Oh-Jong (Agro-materials management Division, RDA) ;
  • Kim, Jin-Bae (Harzardous Substances Division, National Academy of Agricultural Science, RDA) ;
  • Kwon, Oh-Kyung (Harzardous Substances Division, National Academy of Agricultural Science, RDA)
  • 진용덕 (국립농업과학원 유해물질과) ;
  • 이희동 (국립농업과학원 농약평가과) ;
  • 유오종 (농촌진흥청 농자재관리과) ;
  • 김진배 (국립농업과학원 유해물질과) ;
  • 권오경 (국립농업과학원 유해물질과)
  • Published : 2008.12.31

Abstract

This study was carried out to elucidate the effects of adjuvants on physicochemical properties and pest control efficacy of pesticide spray solution. Spray droplet sizes of pesticide solution decreased by addition of adjuvants even though its effect varied according to the pesticides. The adhesive effect of pesticides sprayed on target crops by addition of adjuvants varied according to the properties, the application methods, and the spray volume of pesticides. Wash-off of the deposited amount of active ingredients of the solution of tricyclazole WP and fenobucarb EC by simulated rainfall after spraying on rice plants dramatically reduced by adding adjuvants. The retained amount of active ingredients of the pesticides were $1.5{\sim}4.1$ times higher than those without adjuvants when subjected to simulated rainfall 6 hours after spraying. Addition of adjuvants to the propanil EC spray solution enhanced the control efficacy in barnyard grass, Echinocloa crus-galli Beauv. by $8{\sim}30%$, which showed a potential to reduce pesticide use.

Adjuvant 첨가에 의한 농약살포액의 이화학적 특성 및 약효증진 효과를 구명하기 위하여 시험한 결과, 농약살포액의 분무입경은 adjuvant의 첨가로 다소 작아지는 경향을 보였으며, 그 효과는 약제 및 보조제의 종류에 따라 상이하였다. 또한 보조제 첨가에 의한 농약의 작물체 부착량은 일정한 경향없이 살포 방법 및 살포량에 따라 상반된 효과를 나타냈다. Adjuvant에 의한 tricyclazole WP와 fenobucarb EC 희석액의 살포 6시간 후 강우처리시 내강우성은 벼의 부위에 따라 $1.5{\sim}4.1$배의 높은 증진효과를 보였다. 또한 보조제 첨가에 의한 Propanil EC의 피 방제효과는 무첨가에 비해 $8{\sim}30%$의 약효 증진 효과를 보여 적절한 보조제를 혼용함으로써 농약의 살포회수 및 사용량을 줄일 수 있는 가능성을 보였다.

Keywords

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