2,6-dichloro-4-pyridinemethanol derivatives and agricultural chemicals

An agricultural agent comprising as an active ingredient at least one 2,6-dichloro-4-pyridinemethanol compound expressed by the following formula (1):

• wherein W denotes:
• a hydrogen atom, a C1 to C8 alkyl group which is unsubstituted or which is optionally substituted with an alkoxy group, an alkylthio group, a cyano group, a phenyl group, or a pyridyl group, the pyridyl group being optionally substituted with a halogen atom;
• a trifluoromethylpyridyl group;
• —COR1;
• —SO2R2;
• —PO(OR3)2;
• CONHR4;
• —COOR4;
• —COCOR4;
• or —SiR5R6R7;
• R1 denotes:
• a C1 to C18 alkyl group which is unsubstituted or which is optionally substituted with an alkoxy group, an alkylthio group, a phenyl group, a hydroxy group, a phenylalkoxy group, a phenylalkylthio group, an alkyloxycarbonyl group, an alkylcarbonylamino group, or a phenoxy group, the phenyl group being optionally substituted with an alkoxy group;
• a C1 to C8 alkenyl group which is optionally substituted with a phenyl group, the phenyl group being optionally substituted with an alkoxy group;
• a phenyl group which is unsubstituted, or which has one or more substituent groups, being the same or different, the substituent groups being selected from:
• halogen atoms;
• C1 to C6 alkyl groups which are optionally substituted with a halogen atom;
• C1 to C12 alkoxy groups which are optionally substituted with a halogen atom;
• C2 to C3 alkenyloxy groups;
• a nitro group;
• an amino group;
• C1 to C4 alkylamino groups;
• a cyano group;
• an acetylamino group;
• a benzoylamino group;
• an acetyloxy group;
• phenyl group;
• and a phenoxy group;
• or
• a 5- or 6-membered heterocyclic ring residue which has any one of a nitrogen atom, an oxygen atom, or a sulfur atom as a ring component atom, the heterocyclic ring residue being optionally substituted with a C1 to C4 alkyl group;
• R2 denotes a C1 to C12 alkyl group or a phenyl group which is optionally substituted with a C1 to C12 alkyl group;
• R3 denotes a C1 to C4 alkyl group;
• R4 denotes a C1 to C3 alkyl group or a phenyl group;
• and each of R5 to R7, being the same or different, denotes a C1 to C4 alkyl group.