Microbiological activity and phytotoxicity meadow-chernozem soils in the conditions of application of iodine

The influence of iodine on the number of soil microorganisms and on vitotox-lichnosti meadow-Chernozem soil. Was conducted a laboratory experiment with 21-day composting meadow-Chernozem soils in terms of trace element in doses from 1 to 27 kg/ha. Iodine was used in the form of potassium iodide. The study was carried out in 2013-2015. Iodine-containing fertilizers have a significant impact on biological AK-efficiency meadow-Chernozem soil. The effect of the trace element is ambiguous, and depends on the dose and type of microorganism. Studies have shown that the level of adaptation at different Phi-also groups of organisms varies: some species reacted positively to the considerable amount of trace element, the number of some of the bacteria decreased, certain microorganisms synergistic relationship with iodine antagonism gave way. Iodine had a stimulating effect on the total number of microorganisms. Optimum dose of trace element 21 kg/ha. Studies have shown that small doses of iodine has a stimulating effect of the growth and development of radish, with increasing dose stimulating effect of iodine is reduced.