新的广谱内吸除草剂 AC 263,499(以下译名豆草唑)是美国氰胺公司新泽西州普林斯敦农业研究中心的 Malefyt 和 Los 等人在1984年发现的。此化合物对大豆田中许多主要的一年生和多年生禾本科以及阔叶杂草有极好的防除效果。初步研究还能用于其他豆科作物以及防除水生杂草。在大豆田,豆草唑可用于栽前、播后苗前、顶土期(大豆苗破土和大豆或杂草萌发之间)或出苗后处理,也可在苗后晚期(在三出复叶的第三叶期)使用。在美国、加拿大、巴西、阿根 The new broad-spectrum herbicide AC 263,499 was discovered by Malefyt and Los et al. In 1984 at the Princeton Agricultural Research Center in New Jersey, USA, of Cyanamid Company. This compound has excellent control of many of the major annual and perennial grasses and broadleaf weeds in the soybean field. Preliminary research can also be used for other leguminous crops and aquatic weed control. In soybeans, bezoar may be used for preemergence, post-sowing pre-emergence, top-soil stage (between the germination of soybean seedlings and the germination of soybeans or weeds) or post-emergence treatment, but also in the late stage of post-emergence The third leaf period) to use. In the United States, Canada, Brazil, Argentina