The invention relates to an agricultural water disintegrable granular composition. More particularly, the invention relates to a water disintegrable granular composition, where the granules include at least one water insoluble crop nutrient or algae or pesticidal active ingredient, and one or more agrochemically acceptable excipient, whereby the granules have a bulk density of less than 1.5 gm/ml and hardness of at least 1 Newton. The present invention also provides a process of preparing the water disintegrable granular composition and a method of fortification of the plants or the soil or the plant propagation material or locus thereof with the water disintegrable granular composition.