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 heteroatom containing ring; and either R 4>;, R 5>; : H, (halo)alkyl, cycloalkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, hetaryl or heterocyclyl; or R 4>;R 5>;N : an optionally substituted heterocycle. In case (ii): G 1>; : CH; G 2>; : [1,3,4]thiadiazole group (b) or 1H-pyrazole group (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