Method for making a gel coat of gel-coat seed easily disintegrable

A method for making the gel coat of gel-coated seed easily disintegrable, in which the gel-coated seed has an aqueous gel layer water-insolubilized with a metal ion, wherein the method comprises "blocking" the insolubilizing action of the metal ion with a sequestering agent, wherein the sequestering agent is pre-contained in the insolubilized aqueous gel layer in an encapsulated form as a microcapsule and is then released from the microcapsule.