Canadian Journal of Plant Science (2008) 88, 839-842

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J.T. O'Donovan, K.N. Harker and D.A. Dew (2008)
Effect of density and time of removal of volunteer canola (Brassica rapa L.) on yield loss of wheat (Triticum aestivum L.)
Canadian Journal of Plant Science 88 (4), 839-842
Abstract: Field experiments were conducted at Lacombe, Alberta, in 1976, 1978, and 1979. Nonlinear regression analysis of the data indicated that initial slopes (% wheat yield loss at low canola densities) varied from 0.29% in 1979 to 2.44% in 1978. However, volunteer canola at densities of 47 (1976), 345 (1978), and 251 (1979) plants m-2 had little effect on wheat yield if the canola was removed at approximately 25 d or earlier after wheat emergence.
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Database assignments for author(s): John T. O'Donovan, K. Neil Harker

Research topic(s) for pests/diseases/weeds:
damage/losses/economics

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Brassica rapa (weed) Wheat (Triticum) Canada (west)
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