Physical properties, released patterns and bio-efficacy of granular mixtures with chlomethoxyfen and butachlor formulated by different methods

제조방식을 달리한 chlomethoxyfen과 butachlor 혼합입제의 물리성, 수중용출도와 생물효과 비교

  • Chung, Bong-Jin (Agricultural Technology Research Institute, DongBu Hannong Chemicals Co. Inc.) ;
  • Yeon, Jae-Heum (Kumi Factory, DongBu Hannong Chemicals Co. Inc.)
  • Published : 1998.12.30

Abstract

To develope cost-effective new granular formulation of mixture with 7.0% chlomethoxyfen and 3.5% butachlor, this study was conducted by investigation of floatability, dispersibility or collapsability and released concentration of active ingredients in water and bio-efficacies of the granules formulated by different formulation methods compared to commercial pellet-extruded granules. They were formulated by coating on or impregnation into extruded pellets, sands and zeolites with two active ingredients, binders, friction reducer, dispersing agents and bentonite. Pellet-coated method showed similar floatability, collapsability and bio-efficacy to the commercial pellet-extruded one or better than that but unstable patterns of released concentration of chlomethoxyfen because of easy isolation of coated technical particles from the surface of granules. Sand-coated methods showed similar physical properties, released pattern of two active ingredients, and bio-efficacy to the commercial one. Liquid binders and/or dispersing agents are more important than powdered ones to control released concentration of active ingredients from the granule mixtures, to improve the floatability and dispersibility, and to show good bio-efficacy. Sand-coated one might be a suitable method if types and amount of liquid binders and dispersing agents are selected.