Nitrogen-containing heterocyclic compounds (I) and theirs salts or N-oxides are new. Nitrogen-containing heterocyclic compounds of formula (I) and theirs salts or N-oxides are new. In case (i): G 1> : N or C-halide; G 2> : thiazole group of formula (a), [1,3,4]thiadiazole group of formula (b) or 1H-pyrazole group of formula (c); R 1> : H or alkyl; G 3> : C(=X)NR 2>R 3>; X : O or S; either R 2> : alkylcarbonyl, alkoxycarbonyl or cycloalkylcarbonyl (optionally substituted by halo), H, (halo)alkyl, (halo)alkoxy, alkenyl or alkoxyalkyl; and R 3> : alkoxyalkyl, bis(alkoxy)alkyl, alkylthioalkyl, alkylcarbonylalkyl, alkylsulfinylalkyl, alkylsulfonylalkyl, alkoxycarbonylalkyl (all optionally substituted by halo), H, (halo)alkyl, cyanoalkyl, (halo)alkenyl, (halo)alkynyl, (halo)alkoxy, alkynyloxy, alkynyloxycarbonyl, or cycloalkyl, cycloalkylcarbonyl, cycloalkylalkyl, heterocyclyl, arylalkyl or hetarylalkyl (all optionally substituted), or NR 4>R 5>; or R 2>R 3>N : an optionally substituted and optionally further heter
