Physical methods for weed control in potatoes
To determine the potential of using different mechanical weed control
(within row rototiller; flame weeder; and finger weeder) techniques and
banded herbicide application to achieve weed control in potatoes.
A three-year trial demonstrated that mechanical weed control in combination
with herbicide application could reduce overall herbicide usage in potatoes.
Flame weeding achieved greatest control of quackgrass and broadleaved
weeds and generally had highest marketable and total potato yield. Flame
weeding at potato emergence or at 10 to 15cm plant height showed no difference
in level of weed control. However, flaming before potato emergence and
2 weeks later will reduce potato yield.
Consumer concerns over herbicide use in potato production has increased
interest in alternative strategies for weed control. Mechanical weed control
measures such as within row tillage, flame weeding, and finger weeding
may complement herbicide applications thereby reducing overall herbicide
Crops and Livestock Research CentreAgriculture
and Agri-Food Canada, 440 University Ave, Charlottetown, PEI, C1A 4N6
Agriculture and Agri-Food Canada
Corresponding Author: IvanyJ@agr.gc.ca