Effect of specific concentrations of superphosphate on growth Chroccoccus Sp and Navicula

الملخص EN

The study included the isolation and diagnosis of Chroccoccus and Navicula, the Chroccoccus is considered to be the Cyanophyta green algae and the Navicula algae from the Diatoms where they were collected from ALhfar river`s Which lies south of the city of Nasiriyah in the back of the Souk Al-Shuyukh and their cultivation on the center ground( chu -10) , Superphosphate fertilizer was present in four concentrations (1%, 3%, 5% and 10%) , in addition to the control coefficient.

The results showed the effect of superphosphate fertilizer on preparation of algal.

For Chroccoccus, superphosphate fertilizer has led to variation in moss , with the highest growth rate (590 cells / 100 ml) on the seventh day at concentration (3%) and the lowest rate (80 cells / 100 ml) on the ninth day at concentration (10%).

The results of the effect of superphosphate fertilizer on the algae of the Navicula showed a difference in growth of moss with the highest growth rate (900 cells / 100 ml) on the seventh day at concentration (1%) and the lowest value of (310 cells / 100 ml) on the ninth day at concentration (10%).