Novel crotonamides of the formula ##STR1## wherein R is selected from the group consisting of adamantyl, bornyl, 5',6'-dihydroendo-5'-dicyclopentadienyl and saturated and unsaturated cycloalkyl of 3 to 8 carbon atoms optionally substituted with a member of the group consisting of alkyl of 1 to 6 carbon atoms, hydroxy, chlorine and alkoxycarbonyl of 1 to 6 alkyl carbon atoms and R.sub.1 is alkyl of 1 to 3 carbon atoms having pre- and post-emergence herbicidal properties.
式中R选自以下组中的一种:孔雀石、莰基、5',6'-二氢内-5'-二
环戊二烯基和饱和和不饱和的3到8个碳原子的环烷基,其可以用1到6个碳原子的烷基、羟基、
氯和1到6个烷基碳原子的烷氧羰基中的一种替换,R1是具有前和后出现的
除草剂性能的1到3个碳原子的烷基。