POWDERY MILDEW CONTROLLER AND CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To provide a control liquid composition for preventing powdery mildew infection and pathogeny, which comprises a plant or animal-derived component usable for horticulture and agriculture and having high safety. SOLUTION: The control liquid composition for preventing powdery mildew comprises an aqueous solution containing an essence extracted from eucalyptus leaves and a water-soluble chitosan as active ingredients for preventing powdery mildew infection and pathogeny. The method for controlling plant powdery mildew comprises spraying the control liquid composition on plants before or immediately after powdery mildew infection. COPYRIGHT: (C)2009,JPO&INPIT