The usefulness of chitosan and Pythium oligandrum in potato tuber protection against Helminthosporium solani
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: firstname.lastname@example.org, email@example.com
The effect of tuber dressing and plant spraying with Biochikol 020 PC (B.A.S.
chitosan) and with Polyversum bio-preparation (B.A.S. Pythium oligandrum) on
the infestation of stored tubers by Helminthosporium solani was studied. Vitavax
2000 FS (B.A.S. karboxin and thiuram) was used as a standard fungicide. The
effect of these preparations applied at three different concentrations on H.
mycelium linear growth was investigated under in vitro conditions according to the
Kowalik and Krechniak method (1961). The application of all tested preparations
during potato vegetation resulted in both lower (in comparison to the control) mean
infestation degree and lower percent of tubers infected by this pathogen. Results
showed that all preparations inhibited H. solani mycelium linear growth.
Kurzawińska H., Mazur S., 2008. The usefulness of chitosan
and Pythium oligandrum in potato tuber protection against
Helminthosporium solani. Folia Horticulturae 20/2: 67-74.