Weed control and herbicide use by corn growers at Kangwon-do, Korea

강원도 옥수수 경작자들의 잡초방제 및 제초제 사용 실태

  • Kim, Song-Mun (Institute for Agricultural Science Research, Kangwon National University) ;
  • Lee, Ahn-Su (Hongchon Maize Experiment Station, Kangwondo Agricultural Research and Extension Services) ;
  • Kim, Yong-Ho (Department of Agricultural Chemistry, Kangwon National University) ;
  • Cho, Jun-Mo (Department of Agricultural Chemistry, Kangwon National University) ;
  • Hur, Jang-Hyun (Department of Agricultural Chemistry, Kangwon National University) ;
  • Han, Dae-Sung (Department of Agricultural Chemistry, Kangwon National University)
  • 김성문 (강원대학교 농업과학연구소) ;
  • 이안수 (강원도 농업기술원 홍천옥수수시험장) ;
  • 김용호 (강원대학교 농화학과) ;
  • 조준모 (강원대학교 농화학과) ;
  • 허장현 (강원대학교 농화학과) ;
  • 한대성 (강원대학교 농화학과)
  • Published : 1999.12.30

Abstract

The objective was to know if corn growers at Hongchcel County, Kangwon-do, where corn is the major agricultural product, control weeds effectively and use herbicides properly to control weeds. Sixty-eight corn growers at Hongchon were participated in this survey. Corn growers have noxious weeds, such as hairy carbgrass, common purslane, lambsquarters, Asiatic dayflower, mugwort and barnyard grass in their corn fields. Forty-four percents of the answered corn growers control weeds by hand weeding, and the others by a combination of physical and chemical methods. Corn growers have a preference of paraquat and alachlor for a pre-emergence treatment (94% of the answered) and of paraquat, glufosinate, glyphosate and fluazifop-P-butyl for a post-emergence treatment (87% of the answered). Corn growers did not select and use herbicides in a proper manner. fifty-four percent of the answered corn fevers selected herbicides by their own experience and 18 percent by neighbors recommendation. Herbicides were not selected and used in a proper manner by corn growers: 54 percent of the answered selected herbicides by the experience of growers and 18 percent by the recommendation of neighbors. In addition, a half of the answered applied over two-fold higher amounts of herbicides than the recommended rate. With these improper- selection and use of herbicides, 37 percent of the answered have experienced the crop damage and 42 percent the herbicide poisoning. We conclude that the development of the educational program for the proper selection and use of herbicides is needed for corn growers in Kangwon-do.

Keywords

weed flora;weed control;herbicide use;corn;maize