Use of strobilurin type compounds for combating phytopathogenic fungi containing an amino acid substitution f129l in the mitochondrial cytochrome b protein conferring resistance to qo inhibitors xv

Compounds of formula I

• wherein
• R1 is selected from O and NH;
• R2 is selected from CH and N;
• R3 is selected from Cl, F and Br;
• R is selected from C1-C3-alkyl, C1-C3-haloalkyl, C3-C6-cycloalkyl and C1-C3-alkyl-C3-C6-cycloalkyl;
• m is an integer selected from 0 and 1;
• Z is selected from phenyl and 5- or 6-membered heteroaryl,
• wherein said heteroaryl besides carbon atoms contain 1, 2 or 3 heteroatoms selected from N, O and S,
• and wherein Z is unsubstituted or carries 1, 2, 3 or up to the maximum number of identical or different groups Ra:
• Ra is selected from halogen, CN, hydroxy, NRARB, C1-C4-alkyl, C2-C4-alkenyl, C2-C4-alkynyl, —O—C1-C4-alkyl, —C(═N—O—C1-C4-alkyl)-C1-C4-alkyl, —C(═O)C1-C4-alkyl,
• —C(═O)—O—C1-C4-alkyl, —C(═O)—NH—C1-C4-alkyl,
• O—CH2—C(═N—O—C1-C4-alkyl)-C1-C4-alkyl, C3-C6-cycloalkyl, C3-C6-cycloalkenyl,
• —C1-C2-alkyl-C3-C6-cycloalkyl, —O—C3-C6-cycloalkyl, phenyl and 5- or 6-membered heteroaryl;
• wherein said heteroaryl besides carbon atoms contain 1, 2 or 3 heteroatoms selected from N, O and S,
• wherein said phenyl and heteroaryl are bound directly or via an oxygen atom or via a C1-C2-alkylene linker,
• and wherein Ra is unsubstituted or carries 1, 2, 3 or up to the maximum number of identical or different groups Rb:
• Rb is selected from halogen, CN, hydroxy, NO2, C1-C4-alkyl, C1-C4-haloalkyl,
• RA, RB independently of each other, are selected from hydrogen, C1-C4-alkyl and C1-C4-haloalkyl;
• and in form of stereoisomers and tautomers thereof, and the N-oxides and the agriculturally acceptable salts thereof.