The purpose of the present invention is to provide a plant disease-controlling composition or combination, said composition or combination comprising a picolinic acid derivative together with another plant disease-controlling agent. Provided is a plant disease-controlling composition or combination that comprises at least one member selected from among a compound represented by formula (I) [wherein R represents an isopropylcarbonyloxymethyl group, an acetyl group, an acetyloxymethyl group, an isobutyloxycarbonyl group or a benzo[d][1,3]dioxo-5-ylmethyl group], an enantiomer thereof, a mixture thereof or an agriculturally or horticulturally acceptable salt thereof together with at least one kind of other plant disease-controlling agent.本發明係以提供一種包含吡啶羧酸衍生物與其他植物病害防治劑而成之植物病害防治用組成物或組合物為目的。根據本發明,提供一種植物病害防治用組成物或組合物,其係包含下述式(I):[式中,R係表示異丙基羰基氧甲基、乙醯基、乙醯氧甲基、異丁氧羰基、或苯并[d][1,3]二側氧-5-基甲基]所示之化合物、其對掌異構物(Enantiomer)、或該等之混合物、或該等之農園藝上可容許之鹽中之至少1種、與其他植物病害防治劑之至少1種而成。
