Disease development of Pythium root rot in bulbous Iris and Crocus |
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| Authors: | G J VAN OS W J M VAN GULIK W J DE BOER |
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| Institution: | Bulb Research Centre, PO Box 85, 2160 AB Lisse, The Netherlands |
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| Abstract: | Iris bulbs and Crocus corms were planted at two planting dates in sandy soil infested with Pythium spp. At monthly intervals during the growing season root rot infection was assessed over 3 consecutive years and disease development curves were predicted for both crops. The disease development was remarkably different for Iris and Crocus and the curve shape was determined by the crop rather than by the Pythium species. Planting date had a significant effect on disease development in both crops. No correlation was found between disease development and soil temperature. |
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| Keywords: | Iris Crocus ancyrencis Pythium spp root rot disease development planting date soil temperature |
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