Patent ID: 8729093

Claim:
A method for treating or controlling a plant disease selected from the group consisting of rice blast, Bakanae disease of rice, Fusarium blight of wheat, seedling blight of wheat, Rhizoctonia seedling blight of cucumber, Pythium damping-off of cucumber, Fusarium wilt of cucumber, damping off of tomato and Fusarium wilt of tomato comprising treating plant seeds with a seed treating composition comprising one or more compounds selected from the group consisting of 3-(5-fluoro-3,3,4,4-tetramethyl-3,4-dihydroisoguinolin-1-yl)quinoline, 8-fluoro-3-(5-fluoro-3,3,4,4-tetramethyl-3,4-dihydroisoquinolin-1-yl)guinoline, 3-(5-fluoro-3,3,4,4-tetramethyl-3,4-dihydroisoquinolin-1-yl)-8-methylquinoline, 3-(4,4-difluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline, 3-(4,4,5-trifluoro-3,3-dimethyl-3,4-dihydroisoquinolin-1-yl)quinoline, 5-fluoro-3,3,4,4-tetramethyl-8b-quinolin-3-yl-4,8b-dihydro-3H-oxazireno[3,2-a]isoquinoline, 4,4,5-trifluoro-3,3-dimethyl-8b-quinolin-3-yl-4,8b-dihydro-3H-oxazireno[3,2-a]isoquinoline, 3-(5-fluoro-3,3,4,4-tetramethyl-2-oxido-3,4-dihydroisoquinolin-1-yl)quinoline, and 3-(4,4,5-trifluoro-3,3-dimethyl-2-oxido-3,4-dihydroisoquinolin-1-yl)quinoline, as an active ingredient, wherein the treatment of the plant seeds is carried out by spraying the composition on the plant seeds, coating the plant seeds with the composition, dipping the plant seeds into the composition or dust-coating the plant seeds with the composition, to control pathogens which adhere to the surface of plant seeds and to control pathogens which infect the inside of the plant seeds, or to control an onset of said disease caused by a pathogen or an onset of said disease which is observed after the sowing of the plant seeds.