COMPOSITION FOR CONTROLLING PLANT DISEASES WHICH COMPRISES NEOLIGNAN COMPOUNDS OR MAGNOLIA SPP. PLANT EXTRACT CONTAINING THEM, AND METHOD FOR CONTROLLING PLANT DISEASES USING THE SAME

摘要

A composition comprising neolignan compounds or the extract of Magnolia spp. is provided to supply the environment-friendly natural fungicide which is harmless to the human body by using natural extract. The composition for controlling plant diseases comprises the extract of Magnolia spp. which is prepared by extracting Magnolia spp. with the solvent selected from C1-C4 alcohol or its aqueous solution, hexane, ethylacetate, methylene chloride and mixture thereof, and comprises neolignan compounds represented by the chemical formula(1), chemical formula(2) or chemical formula(3), wherein R is H or CH3.