PROBLEM TO BE SOLVED: To provide a method for promoting plant growth.SOLUTION: In the method for promoting plant growth, a plant is treated with at least one compound selected from the group consisting of compounds represented by formula (1). In the formula: X1 is a methyl group, a difluoromethyl group or an ethyl group； X2 is a methoxy group or a methyl amino group； and X3 is a phenyl group, a 2-methylphenyl group or a 2,5-dimethyl phenyl group.COPYRIGHT: (C)2013,JPO&INPITMétodo para estimular el crecimiento de una planta, que comprende tratar la planta con una cantidad eficaz de un compuesto representado por la siguiente fórmula (1):**Fórmula** en la que X1 representa un grupo metilo, un grupo difluorometilo o un grupo etilo； X2 representa un grupo metoxi o un grupo metilamino； y X3 representa un grupo fenilo, un grupo 2-metilfenilo o un grupo 2,5-dimetilfenilo.
