Özet:

The antagonistic activity of strain B. amyloliquefaciens subsp. plantarum IMB B-7404 (Micro-1) with the titer of 1-3x107 СFU/ml in relation to the spring barley leaf spot and root rot has been studied in the field and laboratory conditions. It has been found that the treatment of seeds with biopreparation Micro-1 reduces the development of the ordinary root rot by 51,3 %. It has been determined that a single spraying of crops with the biopreparation during the tillering phase reduces the development of barley Helminthosporium by 42,5 % and double application during the phase of tillering and earing – by 55,0 % respectively. A single spraying of spring barley with preparation Micro-1 with the titer of 1-3x107 CFU/ml during the tillering phase provides the technical effectiveness against Helminthosporium at 43,8 % and double application during the tillering and earing phase – at 46,8 % respectively. The application of biopreparation Micro-1on plantings increases the yield of spring barley grain by 0,35–0,45 t/ha as compared to the control Author Biographies Alexander Chaika, Zhytomyr National Agroecological University Staryi blvd., 7, Zhytomyr, Ukraine, 10008 PhD, Associate Professor Department of Plant Protection

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