Ecology and isolation of Streptomyces: • Alkaline and neutral soils are more favorable for the development of Streptomyces than are acid soils. • Streptomyces require a lower water potential for growth than many other soil bacteria. • Media often selective for Streptomyces contain the usual assortment of inorganic saltsEcology and isolation of Streptomyces: • Alkaline and neutral soils are more favorable for the development of Streptomyces than are acid soils. • Streptomyces require a lower water potential for growth than many other soil bacteria. • Media often selective for Streptomyces contain the usual assortment of inorganic salts