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- Title
Effect of soil moisture on the transmission of pea bacterial blight (<em>Pseudomonas syringae</em> pv. <em>pisi</em>) from seed to seedling.
- Authors
Roberts, S. J.
- Abstract
Controlled-environment studies in which pea seed cv. Solara, inoculated with Pseudomonas syringae pv. pisi was sown in pots of compost maintained at different moisture contents showed that soil moisture had a considerable influence on the transmission of the disease from seed to seedling. An equation was derived from this data which described the relationship between the proportion of seedlings infected (p) and the soil water stress (s) in MPa: -ln(-ln(1-p)) = 0.64 ln(s)+4.5. This equation was used to produce predicted transmission rates for each year from 1987 to 1990, which were compared with measured transmission rates in field experiments at Wellesbourne in the same years. Although agreement between the observed and predicted transmission rates was poor, years of severe and slight disease transmission were successfully predicted.
- Subjects
BACTERIAL blight of peas; PEA diseases &; pests; SOIL moisture; SEEDS; BACTERIAL diseases of plants; PLANT diseases
- Publication
Plant Pathology, 1992, Vol 41, Issue 2, p136
- ISSN
0032-0862
- Publication type
Article
- DOI
10.1111/j.1365-3059.1992.tb02330.x