**2.16 Effects of specific nitrogenous compounds**

The nitrogenous compounds used were potassium nitrate, ammonium sulphate and ammonium chloride. Pectin was the constant carbon source in the growth medium. Endo-polygalacturonase activity expressed by the fungal strains of *Lasiodiplodia theobromae* and *Rhizoctonia solani* were investigated. Endo-Polygalacturonase activity expressed on the tenth day of incubation at 30°C was recorded.
