Isolation of actinomycetes from different soils of Beni Amir Morocco

Actinomycetes strains were isolated for the first time from 11 soil samples from the beni amir region of morocco. a physicochemical characterization of the different soils studied shows that each sample represents a particular ecosystem. isolation was performed using two culture media bennett and minimal synthetic media (mms). number of bacteria varies from 0.03 × 10⁸ ufc/g to 146 × 10⁸ ufc/g, from 0.36 × 10⁵ ufc/g to 209 × 10⁵ ufc/g for the actinomycetes and from 0.51 × 10⁵ ufc/g to 2310.33 × 10⁵ ufc/g for mushrooms. thus, a percentage of actinomycetes relative to the total microflora is maximum on the s4 site (20.31%) and minimum (0.001%) on the s11 site. it seems that the distribution of actinomycetes in the studied soils is influenced by the physicochemical factors prevailing there. indeed, the percentage of actinomycetes shows a positive correlation with organic matter and total organic carbon and negative correlation with other parameters such as ph, moisture, potassium and phosphorus.