Agronomic agent treatment, with delayed effect, particularly for seed germination and plant development

摘要

Agent agronomically treating a living plant supported by a damp substrate, for example a floor, presenting such an agent in solid divided state, and solid particles comprising at least one active entity for agronomic treatment, characterized in comprising that each particle comprising: - a core consisting of a grain of an inert solid material towards the substrate, comprising an inner developed surface above its visible surface, and suitable therefore for adsorption and / or absorption, - the active entity agronomically treatment absorbed in the grain and / or adsorbed on the surface of said grain, - a first membrane encapsulating the core comprising the active entity, comprising at least one hydrophilic polymer, permeable outwardly against the active entity, when is in direct or indirect contact with the wet substrate, - a second membrane, said second membrane being consisting of at least one hydrophobic polymer dissolvable upon contact with the substrate and coating said second membrane the first membrane.