Winter discoloration prevention manner and inhibiter null of purple spot generation prevention manner and inhibiter, and cold region die Sibakusa of Sibakusa synthetic

摘要

PROBLEM TO BE SOLVED: To effectively prevent the generation of violet spots appearing in a synthetic lawn grass breed such as bent grass in winter or the discoloration of a cold district type lawn grass such as blue grass. ;SOLUTION: This violet spot generation-preventing agent or winter period discoloration-preventing agent contains glycine betaine as an active ingredient in the form of an aqueous solution or the like. The spraying of the violet spot generation-preventing agent or winter period discoloration-preventing agent on lawn grasses in autumn to winter enables to increase the contents of the betaine in the plant bodies and effectively prevent the generation of the violet spots and the discoloration of the lawn grasses in winter.;COPYRIGHT: (C)1999,JPO