Effect of planting date and inoculum level on incidence and severity of powdery scab on potato |
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Authors: | Barbara J Christ |
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Institution: | (1) Department of Plant Pathology, The Pennsylvania State University, 16802 University Park, PA, USA |
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Abstract: | Summary Powdery scab incidence and severity was examined on six potato cultivars planted at two different dates in a naturally infested
field. There were two sub-plots; one where seed was exposed prior to planting to spores ofSpongospora subterranea from scabby peels, which were then added to the furrow at planting, and another where seed was exposed only to natural inoculum
within the field. The later planting data reduced incidence and severity, but there were no differences between sub-plots.
All cultivars became infected, but ‘Rosa’ was the most susceptible and ‘Katahdin’ the most resistant.
Contribution No. 1720, Department of Plant Pathology, The Pennsylvania Agricultural Experiment Station. Authorized for publication
September 22, 1988 as Journal Series Paper No. 8007. |
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Keywords: | Solanum tuberosum L Spongospora subterranea |
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