The effect of sowing date on infection of sugar beet by Polymyxa betae

A - Papers appearing in refereed journals

Blunt, S. J., Asher, M. J. C. and Gilligan, C. A. 1992. The effect of sowing date on infection of sugar beet by Polymyxa betae. Plant Pathology. 41 (2), pp. 148-153.

AuthorsBlunt, S. J., Asher, M. J. C. and Gilligan, C. A.
Abstract

The effect of sowing date on the infection of sugar-beet seedlings by Polymyxa betae was examined in a small-plot experiment on a naturally infested site. Seed was sown on seven occasions at weekly intervals from late March to early May. From each sowing, plant samples were taken at approximately weekly intervals over a period of 7 weeks. The extent of root infection by P. betae and the dry weight of plants was determined at each sampling date, and the progress of infection and rate of plant growth were examined against time and thermal time. Infection occurred sooner after sowing and the subsequent rate of fungal development was more rapid in late-sown than in early-sown plants. Early sowing allowed germination and growth of sugar beet at temperatures too low for fungal infection. The growth of late-sown plants appeared to be reduced by P. betae infection. The implications of these findings for the development of rhizomania disease are discussed.

KeywordsAgronomy; Plant Sciences
Year of Publication1992
JournalPlant Pathology
Journal citation41 (2), pp. 148-153
Digital Object Identifier (DOI)doi:10.1111/j.1365-3059.1992.tb02332.x
Open accessPublished as non-open access
Funder project or code27
217
Project: 272003
ISSN00320862
PublisherWiley

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