Piperidinecarboxylic acidderivatives ofthe formula (I)in which the symbols A, L1, L2, G, p, Q, R1, R2, T and Y are each as defined in the description, and salts, metal complexes and N-oxides of the compounds of the formula (I), and the use thereof for controlling phytopathogenic harmful fungi and processes for preparing compounds of the formula (I).本發明係關於式(I)之六氫吡啶羧酸衍生物其中符號A,L1,L2,G,p,Q,R1,R2,T和Y之每一者如發明說明中所定義,式(I)化合物之鹽、金屬錯化物、N-氧化物,及其用於防治植物病原性的有害真菌和製備式(I)化合物的方法。