Vesicular‐arbuscular Mycorrhizas of the Species of a Molinietum Coeruleae L.I. Association: The Ecology

Summary The frequency and intensity of vesicular‐arbuscular mycorrhizas in the species of a Molinietum coeruleae association was studied during the vegetative period. From the total number of fifty‐five species in the association only nine species were nonmycorrhizal. There was dependence of the frequency of entry points on the root depth and the vegetative season. The ground water table was relatively stable during the year and it did not exert strong direct influence on the intensity of mycorrhizal infection.