A microcapsule is provided, containing: (a) an agriculturally active ingredient in which a retention rate is less than 50% after irradiation with xenon light (290 nm cutoff) at an intensity of 0.68 W/m2 at 340 nm for 8 hours； and (b) a hydrophobic organic solvent； wherein a weight ratio of the agriculturally active ingredient to the hydrophobic organic solvent is from 10:90 to 70:30. With this microcapsule, it is possible to inhibit photodegradation of the agriculturally active ingredient.
