Method for reducing water stress in plants

A method for reducing water stress in a plant which comprises applying an effective amount of one or more compounds selected from the group consisting of a compound represented by the formula (I) and agriculturally acceptable salts thereof to a plant that has been exposed to or to be exposed to water stress conditions:

• wherein
• R1 represents a phenyl group, a naphthyl group or an aromatic heterocyclic group, and these groups are optionally substituted with 1 to 5 members selected from among a halogen atom, a hydroxyl group, a cyano group, a nitro group, a C1-C6 alkyl group optionally substituted with one or more halogen atoms, a C1-C6 alkoxy group optionally substituted with one or more halogen atoms, a C1-C6 alkylthio group optionally substituted with one or more halogen atoms, a C2-C6 alkenyl group optionally substituted with one or more halogen atoms, a C2-C6 alkynyl group optionally substituted with one or more halogen atoms, an amino group, a C1-C6 alkylamino group and a di(C1-C6 alkyl)amino group;
• R2 represents a hydroxyl group, an amino group, or a C1-C6 alkoxy group;
• X represents a linear or branched C1-C6 alkylene group;
• and
• Y represents a linear or branched C1-C6 alkylene group, or a linear or branched C2-C6 alkenylene group.