Chemical Contorl of Pathogenic Sunflower( Helianthus annuus L) Seed Borne Fungi

Effectiveness of five fungicides (benlate , captan , dithane M-45 , rhizolex , tecto ) which were used in seed treatment and foliar application showed that tecto and rhizolex were the most effective In Vitro studies to control the studied fungi , while tecto and captan at the rate 2000 mg /l were the most effective in controlling damping off sunflower ( as seed dressing ) .All the fungicides showed effectivness in protection sunflower plants from leaf spotting caused by A. alternata , A. dianthi and M. phaseolina i.e. captan , tecto the rate 1000 mg/L were most effective against A. alternata and benlate , dithane M-45 at the rate 1000 mg/l against A. dianthi while benlate and tecto at rate 100 mg/l were the best fungicides agains M. phaseolina .