| 摘要 |
A method of protecting a crop by killing eggs of insects, or insects at the egg stage, the insects being detrimental to the crop, said method comprising applying to a locus where the eggs of insects are located or are expected to be located or are expected to be going to be located an effective amount of a compound of formula (I): R1-X-N(R2)-C(R3)=Z-R4, or a salt thereof, wherein R1 represents an optionally substituted 5-6 membered aromatic hetero ring containing nitrogen atom, except a non-substituted 2-pyridyl; X represents an optionally substituted alkylene or alkylidene; R2 represents hydrogen, carbamoyl, mono or di alkyl carbamoyl, thiocarbamoyl, mono or di C1-5 alkylthiocarbamoyl, sulfamoyl, mono or di C1-5 alkylsulfamoyl, an optionally substituted alkyl, alkenyl or alkynyl, an optionally substituted cycloalkyl or cycloalkenyl, optionally substituted aryl or -Y-R5; Y represents O, S(O)n, CO, CS or CO2; n represents 0, 1 or 2; R5 represents a hydrogen, optionally substituted alkyl, alkenyl or alkynyl, optionally substituted cycloalkenyl or aryl; R3 represents a hydrogen, an optionally substituted alkyl, alkenyl or alkynyl, optionally substituted cycloalkyl or cycloalkenyl; R4 represents a cyano or a nitro, and Z represents CH or N. |
