Certain species of fungi are controlled by ethene derivatives of the formula: ##STR1## wherein one of Ar.sup.1 and Ar.sup.2 is one of certain N-heterocyclic moieties and the other is halogen-substituted phenyl, R.sup.1 is hydrogen or alkyl and R.sup.2 is --CN or --C(O)XR, wherein X is oxygen or sulfur and R.sup.1 has a defined meaning.
某些真菌物种受到公式为:##STR1## 的
乙烯衍
生物控制,其中Ar.sup.1和Ar.sup.2中的一个是某些N-杂环基团之一,另一个是卤素取代的苯基,R.sup.1为氢或烷基,R.sup.2为--CN或--C(O)XR,其中X为氧或
硫,R.sup.1有定义的含义。