All over the world, biopolymeric hydrogels are used in a variety of applications. These hydrogels are primarily used in agriculture, where they are employed as nutrient and pesticide release agents and water reservoirs. Because chitosan-based hydrogels can operate as a carrier of nutrients and other agrochemicals and improve soil's capacity to retain water, they can be employed as soil conditioning agents. Irrigation methods and water-saving measures influence crop growth, productivity, and survival. This paper addresses the possible usage of biodegradable hydrogels based on chitosan in horticulture and agriculture. This article describes how to create hydrogels by chemical or physical crosslinking and the subsequent functional characteristics of recently described hydrogels, like the release of active substances and water retention.