Fact-finding survey on herbicide use in paddy rice at farmer's level

논 제초제 사용에 대한 농가실태조사

  • Lee, In-Yong (National Institute of Agricultural Science and Technology, RDA) ;
  • Park, Jae-Eup (National Institute of Agricultural Science and Technology, RDA) ;
  • Park, Tae-Seon (National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Tae-Wan (National Institute of Agricultural Science and Technology, RDA) ;
  • Oh, Byung-Youl (National Institute of Agricultural Science and Technology, RDA)
  • 이인용 (농업과학기술원 농약개발과) ;
  • 박재읍 (농업과학기술원 농약개발과) ;
  • 박태선 (농업과학기술원 농약개발과) ;
  • 김태완 (농업과학기술원 농약개발과) ;
  • 오병렬 (농업과학기술원 농약개발과)
  • Published : 1998.09.30

Abstract

A nation-wide fact-finding survey was done to provide the basic information for establishing the rational weed control scheme in paddy rice. A total of 445 respondents including 273 farmers and 172 pesticide dealers was involved in this survey. Dominant weeds in rice paddy field were Echinochloa crus-galli, Eleocharis kuroguwai, Sagittaria pygmaea, Sagittaria trifolia, etc.. Preferred herbicides widely used by farmners were ranked in the following order; butachlor 5GR, pyrazosulfuron-ethyl + molinate 5.07GR, molinate + cinosulfuron 5.08GR, meanwhile, those recommended by pesticide dealers were; pyrazosulfuron-ethyl + molinate 5.07GR, molinate + cinosulfuron 5.08GR, and butachlor 5GR. The guidelines to choose the preferred herbicides was primarily based on the experience, which was occupied about 45%. Approximately 56% of the farmers followed the recommended herbicide dosage and 43% of them applied the herbicides before weed germination (pre-emergence treatment). In addition, most farmers applied herbicides at least two times with systematic application schedule. Application method of granular formulation was broadcasting by hand, while that of sprayable ones was by high-pressure sprayer. Some farmers answered that they had experienced phytotoxicity in the crop by applied herbicides, of which higher experience was observed from the farmers who applied by high-pressure sprayer. It was analyzed significantly that the feasible herbicides to cause phytotoxicity in rice at farmer's level were butachlor 5GR, esprocarb + pyrazosulfuron-ethyl 5.07GR and bensulfuron-methyl + molinate 5.17 GR.

Keywords

fact-finding survey;paddy herbicide;farmer;pesticide dealer