An agrochemical composition contains a component (A): a compound represented by formula (I) (wherein, R 1 , R 2 , R 3a , R 3b , R 4a , R 4b , and R 5 each independently represents an unsubstituted or substituted C1-6 alkyl group or the like, n represents an integer of 0 to 4, o and p each independently represents an integer of 2 to 4, and X represents a carbon atom or a nitrogen atom) or a salt thereof, and a component (B): a hydrolysis inhibitor.
