A novel picolinic acid represented by general formula (1) and its salt, a process for producing the same, and a herbicide containing the same as the active ingredient, wherein R represents hydrogen, alkyl, etc.; R¹ and R² may be the same or different from each other and each represents cyano, phenoxy, etc.; Y represents oxygen, sulfur, etc.; and n represents 0 or 1. The derivative and its salt have an excellent herbicidal effect on a wide variety of weeds even in small doses, so that they are applicable as a herbicide to lowland and upland fields, non-crop land, and so forth.
一种由通式(1)代表的新型
吡啶甲酸及其盐,一种生产该衍
生物及其盐的工艺,以及一种含有该衍
生物作为活性成分的
除草剂,其中R代表氢、烷基等;R¹和R²可以相同或互不相同,各自代表
氰基、苯氧基等;Y代表氧、
硫等;n代表0或1。该衍
生物及其盐即使在小剂量下对多种杂草也有很好的除草效果,因此可作为
除草剂用于低地和高地的田地、非耕地等。