PROBLEM TO BE SOLVED: To improve the application efficiency of agrochemicals and save the labor of the application work by using an agrochemical containing one or more agrochemical components and having the maximum releasing date of the agrochemical component coincident or nearly coincident with the application timing of the agrochemical at the cultivation site. SOLUTION: An agrochemical particle (core material) containing one or more agrochemical components is coated with a coating material containing a resin as an active component and used as a coated agrochemical granule having sustained release function or delayed release function. The maximum releasing date of the agrochemical component can be made to be coincident or nearly coincident with the application timing of the agrochemical at the cultivation site by estimating the maximum release date of plural agrochemicals from the temperature in the soil or atmosphere of the cultivation site and selecting an agrochemical having the period from the application of the agrochemical to the maximum releasing date of the agrochemical component longer than the period from the application time to the starting time of the agrochemical application period and shorter than the period from the application time to the end of the agrochemical application period.
