| 摘要 |
A method for the control of nematodes and soil-borne insects in agricultural crops which comprises applying to the situs of infestation a composition containing as active ingredient a compound of formula R-Z(CH2)n-Q wherein R is an alkyl radical of one or two carbon atoms carrying one-to-four fluorine substituents and one-to-three chlorine or bromine substituents represented as CFpX(3-p)- or CFrX(3-r)-CFsX(2-s)-; Z is -(CH2-CHX)- or -(CH=CH)-; X is chlorine or bromine; Q is methyl, isopropyl, tert-butyl, or C3-C6 cycloalkyl; n is 5 to 12 as required to yield in the compound a chain of 10 to 16 carbon atoms; p is 1 or 2; r is 2 or 3; s is 0 or 1 or 2. A process for preparation of active ingredient compounds is described, and utility of compositions against nematodes and soil-borne insects is exemplified. |
