PROBLEM TO BE SOLVED: To provide a method for improving coloring of fruits of Pione grapevine and Fujiminori grapevine, and to provide a method for preventing fruit cracking apt to occur from the initial stage to the middle stage of maturation of fruits of Fujiminori grapevine.SOLUTION: This method for improving coloring of fruits and preventing fruit cracking comprises applying magnesium component derived from seawater or deep seawater to soil of a grape vineyard from the young fruit stage to the maturation middle stage of grapes.COPYRIGHT: (C)2009,JPO&INPIT【課題】ピオーネ樹、藤稔樹における果実の着色改善を図かり、藤稔樹における果実の成熟初・中期に発生しやすい裂果の防止方法の提供。【解決手段】海水又は海洋深層水由来のマグネシウム成分を、ブドウの幼果期から成熟中期にブドウ園の土壌に施与する果実の着色改善及び裂果防止の方法。【選択図】なし
