Applicability of cyanobacteria strains (Nostoc lichenoides, Nostoc indistinguendun, Nostoc favosum) and their mixture for effect on microbial communities of soil under four levels of inorganic nitrogen (0, 20, 40 and 60% N) was used with recommended doses of nitrogen (70 kg N fed -1 ).This experiment was carried out in two types of soil texture (sandy and clay loam) to enumerate the number of viab...