NitroZlak — this is a biological preparation in the form of a liquid suspension. The preparation contains Agrobacterium radiobacter bv. 2 RX-64 and Bacillus megaterium BM-68, each with a titer of 2.0 x 109 IU/ml. The preparation is produced by BIO NASERVIS PLUS, located in Ukraine. NitroZlak is intended for use in cereal and grass crops. The preparation belongs to the category of biological agents and can be used to protect plants from various pathogens. It is a liquid concentrate suspension, which allows convenient application in agricultural practice.