[article]
| Titre : |
The biology of Canadian weeds. 115. Conyza canadensis |
| Type de document : |
Imprimé |
| Auteurs : |
Susan E. Weaver |
| Année de publication : |
2001 |
| Article en page(s) : |
867-875 |
| Langues : |
Anglais (eng) |
| Catégories : |
[CBNPMP-Géographique] Canada
[CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
|
| Mots-clés : |
Conyza canadensis (L.) Cronq. Erigeron canadensis L., 1753 |
| Résumé : |
Conyza canadensis (L.) Cronq. (Canada fleabane, horseweed, mare’s-tail) is a winter or summer annual, native to North America, and found in all provinces of Canada except Newfoundland. It is a weed of orchards, vineyards, roadsides, and arable fields where tillage has been reduced or eliminated. Most seedlings emerge from late August through October and form rosettes which overwinter. Large numbers of small, wind-dispersed seeds, ranging to over 200 000 seeds per plant, are produced in late summer. Populations of C. canadensis in more than ten countries have evolved resistance to herbicides such as paraquat, atrazine, chlorsulfuron or glyphosate. Several paraquat resistant populations were found in orchards in Essex Country, Ontario. It serves as a wild host of the tarni shed plant bug, and of aster yellows, a mycoplasma disease transmitted by the aster leaf hopper. |
| Lien pérenne : |
DOI : 10.4141/P00-196  |
| Permalink : |
https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=146702 |
in Canadian Journal of Plant Science > 81 (2001) . - 867-875
Weaver, Susan E.
2001
The biology of Canadian weeds. 115. Conyza canadensis.
Canadian Journal of Plant Science, 81: 867-875.
|
The biology of Canadian weeds. 115. Conyza canadensis in Canadian Journal of Plant Science, 81 (2001)
