<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The studies were carried out both in in vitro and in vivo conditions. The field experiment was conducted during the years 2005-2007 at the Experimental Station in Mydlniki, owned by the Department of Plant Protection at the University of Agriculture in Krakow. The aim of these studies was to determine 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 top leaves and tubers of ‘Ibis’ potatoes infested by Phytophthora infestans. The chemical preparation Vitavax 2000 FS (B.A.S. karboxin and thiuram) was used. The in vitro evaluation of Polyversum and Biochikol 020 PC bio-preparations on the P. infestans mycelium linear growth was investigated. The above-mentioned preparations were applied at three different concentrations. The experiment was carried out using the Kowalik and Krechniak method (1961). Based on the results it was found that the preparations under examination significantly inhibited top leaf and tuber infestation by Phytophthora infestans. Moreover, according to the results obtained from in vitro tests, a significant effect from the Vitavax 2000 FS and Polyversum preparations and from the highest concentration (2%) of Biochikol 020 PC preparation on the percentage inhibition of P. infestans mycelium linear growth was observed (in comparison to the control). </p></abstract>

The studies were carried out both in in vitro and in vivo conditions. The field experiment was conducted during the years 2005-2007 at the Experimental Station in Mydlniki, owned by the Department of Plant Protection at the University of Agriculture in Krakow. The aim of these studies was to determine 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 top leaves and tubers of ‘Ibis’ potatoes infested by Phytophthora infestans. The chemical preparation Vitavax 2000 FS (B.A.S. karboxin and thiuram) was used. The in vitro evaluation of Polyversum and Biochikol 020 PC bio-preparations on the P. infestans mycelium linear growth was investigated. The above-mentioned preparations were applied at three different concentrations. The experiment was carried out using the Kowalik and Krechniak method (1961). Based on the results it was found that the preparations under examination significantly inhibited top leaf and tuber infestation by Phytophthora infestans. Moreover, according to the results obtained from in vitro tests, a significant effect from the Vitavax 2000 FS and Polyversum preparations and from the highest concentration (2%) of Biochikol 020 PC preparation on the percentage inhibition of P. infestans mycelium linear growth was observed (in comparison to the control).

The evaluation of <italic>Pythium oligandrum</italic> and chitosan in control of <italic>Phytophthora infestans</italic> (Mont.) de Bary on potato plants

Department of Plant Protection Faculty of Horticulture

Folia Horticulturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The evaluation of  and chitosan in control of  (Mont.) de Bary on potato plants

<trans-abstract xml:lang="pl" xmlns="http://www.w3.org/1999/xhtml"><p> Badania wykonano w warunkach in vitro i in vivo. Doświadczenia polowe przeprowadzono w latach 2005-2007 w Stacji Doświadczalnej Katedry Ochrony Roślin Kraków-Mydlniki. Badano wpływ zaprawiania sadzeniaków i opryskiwania roślin biopreparatem Polyversum (s.a. Pythium oligandrum) i Biochikolem 020 PC (s.a. chitozan) na porażenie zarówno naci, jak i bulw ziemniaka odmiany ‘Ibis’ przez Phytophthora infestans. Jako preparat chemiczny użyto Vitavax 2000 FS (s.a. karboksyna + tiuram). W doświadczeniach prowadzonych w warunkach in vitro badano wpływ Polyversum i Biochikolu 020 PC w trzech różnych stężeniach na wzrost liniowy plechy P. infestans. Badania te wykonano metodą zatrutych podłoży Kowalika i Krechniaka (1961). Wyniki doświadczeń polowych wykazały, że badane preparaty w sposób istotny ograniczyły porażenie naci i bulw przez P. infestans. Na podstawie wyników badań w warunkach in vitro stwierdzono istotny (w stosunku do kontroli) wpływ Vitavaxu 2000 FS, biopreparatu Polyversum i Biochikolu 020 PC tylko w stężeniu największym (2%) na procent zahamowania wzrostu liniowego plechy P. infestans</p></trans-abstract>

Badania wykonano w warunkach in vitro i in vivo. Doświadczenia polowe przeprowadzono w latach 2005-2007 w Stacji Doświadczalnej Katedry Ochrony Roślin Kraków-Mydlniki. Badano wpływ zaprawiania sadzeniaków i opryskiwania roślin biopreparatem Polyversum (s.a. Pythium oligandrum) i Biochikolem 020 PC (s.a. chitozan) na porażenie zarówno naci, jak i bulw ziemniaka odmiany ‘Ibis’ przez Phytophthora infestans. Jako preparat chemiczny użyto Vitavax 2000 FS (s.a. karboksyna + tiuram). W doświadczeniach prowadzonych w warunkach in vitro badano wpływ Polyversum i Biochikolu 020 PC w trzech różnych stężeniach na wzrost liniowy plechy P. infestans. Badania te wykonano metodą zatrutych podłoży Kowalika i Krechniaka (1961). Wyniki doświadczeń polowych wykazały, że badane preparaty w sposób istotny ograniczyły porażenie naci i bulw przez P. infestans. Na podstawie wyników badań w warunkach in vitro stwierdzono istotny (w stosunku do kontroli) wpływ Vitavaxu 2000 FS, biopreparatu Polyversum i Biochikolu 020 PC tylko w stężeniu największym (2%) na procent zahamowania wzrostu liniowego plechy P. infestans

The studies were carried out both in in vitro and in vivo conditions. The field experiment was conducted during the years 2005-2007 at the Experimental Station...

The evaluation of Pythium oligandrum and chitosan in control of Phytophthora infestans (Mont.) de Bary on potato plants

Published Online: Aug 01, 2013

Page range: 13 - 23

DOI: https://doi.org/10.2478/fhort-2013-0134

Keywords
biological protection, late blight, potato

© 2009 Halina Kurzawińska et al., published by Versita

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The evaluation of Pythium oligandrum and chitosan in control of Phytophthora infestans (Mont.) de Bary on potato plants

Published Online: Aug 01, 2013

Page range: 13 - 23

DOI: https://doi.org/10.2478/fhort-2013-0134

Keywordsbiological protection, late blight, potato

© 2009 Halina Kurzawińska et al., published by Versita

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
biological protection, late blight, potato