Folia Horticulturae

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The effect of bio-preparations on the infestation of tubers by Streptomyces spp.

Halina Kurzawińska, Stanisław Mazur

Department of Plant Protection
Faculty of Horticulture, University of Agriculture in Kraków
29 Listopada 54, 31-425 Kraków, Poland
e-mail: hkurzaw@ogr.ar.krakow.pl, smazur@ogr.ar.krakow.pl

The effect of tuber dressing and plant spraying with Polyversum (B.A.S. Pythium oligandrum) and Biochikol 020 PC (B.A.S. chitosan) bio-preparations on the infestation of potatoe tubers by Streptomyces spp. was studied during the 2005–2007 years. The Vitavax 2000 FS (B.A.S. karboxin and thiuram) was used as a standard fungicide.

The results received from field experiments indicate that, during all years of study these preparations significantly reduced tubers infestation by Streptomyces spp. The Polyversum bio-preparation, which was applied to tuber dressing and sprayed on plants four times during vegetation period, showed the best protective effect against Streptomyces spp.

Kurzawińska H., Mazur S., 2008. The effect of bio-preparations on the infestation of tubers by Streptomyces spp. Folia Horticulturae 20/2: 103-110.