Abstract
Application of diatomite to the soil in concentrations (from 1.5 to 3%) resulted in the increase of arbuscular mycorrhiza fungi in root core of barley cultivar "Baysheshek". The highest microtropic was observed under 10% diatomite concentration. Further increase of diatomite concentration resulted in slight decrease of barley microtropic level. At the same time under different concentrations of diatomite from 1.5 to 10% the correlation between microtropic levels and dry mass of aboveground parts of the plant is observed. The data obtained in the course of the study can be used in the development of biotechnologies aimed at improving soil fertility and crop yields.