Effect of Some Agricultural Media and pH on the Growth of Sclerotinia sclerotiorum and Oxalic Acid Production.


Series of Lab. experiments were conducted in the lab. of higher studies , Biol . Dept. Coll. of Edu.for pure Science , Kerbala'. Univ. Numbers of nutritional media were used represented by Potato Dextrose Agar (PDA) , Czapek Dox Agar(CDA), Oat Agar and Sabrouaud Dextrose Agar (SDA). Series of pH values were applied namely 5.0,5.5,6.0,6.5,7.0 and 7.5 .Results revealed that higher growth of the fungi was obtained from PDA and CDA, the best pH value was 7.0 . The highest percentage of oxalic acid was obtained from SDA after 7 days of incubation at 20 ± 20 C with pH 7.