Algal cultures have been used in various morphological, physiological, biochemical and genetic researches. A Re-evaluation of taxonomic delimitations of many forms, polymorphisms, antibiotic resistance, variability, cytology, genetic and mutation as been made possible with the help of authentic algal cultures. Algal cultures also enabled the remarkable progress in our knowledge of life cycles of algae. Algal cultures have greatly contributed to many physiological discoveries. Number of scientist carried out the culturing method to make algal culture by using bacteriological techniques. Famintzin (1871) used some nutrients which are used by angiosperm. The Current is based on Blue green algal study on cotton fields of Nyahali village and finds various variety for lab culture study were taken with scientific classifications