Peronospora hyoscyami(PEROTA)
Distribution details in Canada (Ontario)
Current pest situation evaluated by EPPO on the basis of information dated
2009: Present, few occurrences
From CABI Disease map 023 (2009): Present, few occurrences
From CABI Disease map 023 (2009): Present, few occurrences
In the 2009 edition of the CABI map no. 23, a not explains that the fungus is not known to overwinter in Ontario and must be reintroduced with inoculum arriving from more southern locations. In some years the pathogen does not occur in Ontario, whereas in other years it has been found, but usually so late in the tobacco-growing season that damage is minimal.
* Bruin, G. C. A.; Ripley, B. D.; Edgington, L. V. (1981) Tobacco International 183 (26), 134-136.
* Gayed, S. K. (1985) Canadian Plant Disease Survey 65 (2), 23-28.
------- Losses after 1979 outbreak were negligible.
* Gayed, S. K.; Watson, M. C. (1975) Canadian Plant Disease Survey 55 (1), 31-35.
* Stoessl, A.; Rock, G. L. (1981) Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz 88 (6), 367-372.
* Gayed, S. K. (1985) Canadian Plant Disease Survey 65 (2), 23-28.
------- Losses after 1979 outbreak were negligible.
* Gayed, S. K.; Watson, M. C. (1975) Canadian Plant Disease Survey 55 (1), 31-35.
* Stoessl, A.; Rock, G. L. (1981) Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz 88 (6), 367-372.
| Country | State | Status | |
|---|---|---|---|
| United States of America | New York | Present, no details | |
| United States of America | Maryland | Present, no details | |
| United States of America | Indiana | Present, no details | |
| United States of America | Georgia | Present, no details | |
| United States of America | South Carolina | Present, no details | |
| United States of America | Connecticut | Present, no details | |
| United States of America | Massachusetts | Present, no details | |
| United States of America | Pennsylvania | Present, no details | |
| United States of America | North Carolina | Present, no details | |
| United States of America | Washington | Present, no details | |
| United States of America | California | Present, no details | |
| United States of America | Florida | Present, no details | |
| United States of America | Kentucky | Present, no details | |
| United States of America | Texas | Present, no details | |
| United States of America | Virginia | Present, no details | |
| United States of America | Wisconsin | Present, no details | |
| United States of America | Delaware | Present, no details | |
| United States of America | Nevada | Present, no details | |
| United States of America | Ohio | Present, no details | |
| United States of America | Present, widespread | ||
| United States of America | Tennessee | Present, no details | |
| United States of America | Arizona | Present, no details |