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The article presents the results of studies on the influence of dry forms of complex mineral and biomaterial fertilizers on the number of different physiological groups of soil microorganisms under vegetable crops (tomatoes, bell peppers, eggplants). It has been established that complex biomineral fertilizers of the FAN-AGRO BIO series create favorable conditions for the reproduction of beneficial soil micro flora in the arable soil layer and balance it in favor of agronomic ally beneficial microorganisms.

The phytohormonal activity of free and immobilized cells of B. subtilis BS-80, B. licheniformis BL-83, P. polymyxa PP-113 and P. amylolyticus PA-118 on phosphate flour have been studied. It was found that immobilized cells more actively synthesized IAA and gibberellins in comparison with free cells. The data obtained indicates that the phytohormonal activity of the salt-resistant cells of cotton rhizobacteria can be kept much better in the immobilized form than in the free form (in a refrigerator on jambs).