2013. Impact of growing conditions on the competitive ability of Camelina sativa (L.) Crantz (Camelina). Can. J. Plant Sci. 93: 243Á247. It has been claimed that Camelina sativa, a recently introduced crop in the northern Great Plains, is a highly competitive species. However, this issue has not been formally tested. Utilizing replacement series diagrams, we assessed the importance of growing conditions in the competitive ability of C. sativa. Results indicated that canola and Bromus tectorum

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... re superior competitors in both loam and sandy soils, thus providing evidence that C. sativa may not be as competitive as previously indicated. Davis, P. B., Maxwell, B. et Menalled, F. D. 2013. Impact des conditions de croissance sur la compe´titivite´de Camelina sativa (l.) crantz (came´line). Can. J. Plant Sci. 93: 243Á247. On soutient que Camelina sativa, une culture d'introduction re´cente dans le nord des Grandes plaines, est une espe'ce tre's concurrentielle. Cependant, la chose n'a jamais e´tef ormellement ve´rifie´e. Recourant a'des diagrammes de se´quences de remplacement, les auteurs ont e´value´l'importance des conditions de croissance pour la compe´titivite´de C. sativa. Les re´sultats indiquent que le et Bromus tectorum sont de meilleurs concurrents sur les loams et les sols sablonneux, preuve que C. sativa pourrait ne pas eˆtre aussi compe´titive qu'on le croit. Mots clé s: Concurrence culture-adventice, se´quences de remplacement, biocarburants, Bromus tectorum, canola Abbreviations: RY, relative yield; RYT, relative yield total Can.