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Forecasting system for infection risk of phoma stem canker in selected regions of the Czech Republic in 2009-2011

Author

Listed:
  • Jana POSLUŠNÁ

    (Department of Plant Protection, Agritec Plant Research, Ltd., Šumperk, Czech Republic)

  • Eva PLACHKÁ

    (OSEVA Development and Research Ltd., Workplace Opava, Opava, Czech Republic)

Abstract

In the period 2009-2011 monitoring of the incidence of phoma stem canker was carried out at selected sites of the Czech Republic (Šumperk and Opava regions in North Moravia). The risk of infection was evaluated by assessing the autumn release of Leptosphaeria spp. ascospores and with the proPlant prediction model. In recent years, the incidence of phoma stem canker has been relatively low and this corresponded with the total count of ascospores released in the autumn period but not with an increased level of infection risk announced by the proPlant model. During the monitored period the ascospore concentration reached maximally 2 ascospores/1 m3 per day. Maximum ascospore release was recorded in 2010 as a result of favourable weather conditions. The first incidence of phoma leaf spot has been observed in mid-October. The higher values of ascospores concentration were recorded in the Opava region, but the total number of the trapped ascospores was more often higher in the Šumperk region.

Suggested Citation

  • Jana POSLUŠNÁ & Eva PLACHKÁ, 2014. "Forecasting system for infection risk of phoma stem canker in selected regions of the Czech Republic in 2009-2011," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 50(1), pages 8-16.
    • Handle: RePEc:caa:jnlpps:v:50:y:2014:i:1:id:84-2012-pps
    DOI: 10.17221/84/2012-PPS
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