[Problem] To provide an agent for increasing the yield amount and the content of amino acids in Solanacaea crops effectively and in a manner that allows for easy implementation ； and a method for applying the agent. [Solution] The yield amount and the amino acid content of Solanacaea crops can be increased in a simple and effective manner by applying an agent containing, as an active ingredient, a cyclohexane derivative of formula (1) expressed in chemical formula (10) (in the formula, R represents hydrogen, a C 1-6 alkyl group, a C 1-6 haloalkyl group or phenyl group (including a substituted phenyl group), and R 1 represents hydrogen, a C 1-6 alkyl group, a C 3-6 cycloalkyl group or benzyl group (including a substituted benzyl group)) and/or a salt thereof (for example, a calcium salt).
