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Crop Losses Due to Weeds in Canada

Published online by Cambridge University Press:  12 June 2017

C. J. Swanton
Affiliation:
Dep. Crop Sci., Univ. Guelph, Guelph, ON, Canada N1G 2W1
K. N. Harker
Affiliation:
Agric. Canada, Lacombe, AB, Canada T0C 1S0
R. L. Anderson
Affiliation:
Agric. Canada, Lacombe, AB, Canada T0C 1S0 USDA-ARS, Akron CO, USA, 80720

Abstract

Concerns about the effect of pesticides on our environment has stimulated questions about the direction of future research in weed science. Knowledge of crop losses due to weeds would be helpful in guiding research objectives by identifying areas of greatest need. A survey was conducted in 1991 to estimate losses due to weeds in 58 commodities in Canada. Data generated included: percent loss in production, quantity loss in production, and loss of production value (monetary value) for each commodity in each province. The estimated average annual losses caused by weeds in the 58 commodities were $984 million, with losses of $372 million in Eastern Canada and $612 million in Western Canada. In Eastern Canada, approximately 50% of the total loss occurred in hay crops and 33% in field crops, whereas in Western Canada, 84% of the total loss occurred in field crops. Loss of potential production due to weeds for each commodity is shown by province.

Type
WSSA Communication
Copyright
Copyright © 1993 Weed Science Society of America 

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References

4 The data are expressed in English units of produce to coincide with a survey estimating crop losses due to weeds in the United States, published by Weed Science Society of America in 1992.Google Scholar