Effect of Different Chemical Compounds on the Growth of Two Soil Algal Species Nostoc humifusum and Oscillatoria earleiRawheya A. Salah El Din, Ahmed D. El-Gamel*, Fatma M. El Habashi, Wessam H. El Nemr.
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The current study was performed on a farm land at El-Khanka District, Kalyoubia Governorate where the land showed symptoms of increase in its salt content. Some of the physical and chemical characteristics of the collected soil samples were determined. Only two halotolerant species of algae were isolated from the soil samples containing lower total soluble salt contents. Purification of algae from bacteria was done then subjected to a series of experiments for determination of the effect of different chemical constituents on their growth. The results showed that the change in salinity (NaCl contents) as well as changing in carbon and nitrogen sources may have a considerable effect on the growth of the two algae species. In addition, also the major biochemical contents of the algal species were affected by the previous changes.