Weeds

Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “Spraying a multi-staged crop”
July 2, 2015

Spraying a multi-staged crop

Crop staging comes into play for herbicide, insecticide and fungicide timing. So crops with plants at various stages — some at flowering, some barely
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June 26, 2015

Herbicide for variable staged crops

Patchy emergence due to a few weeks of dry and then a rain, or due to reseeded crop emerging among the few original plants,
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June 17, 2015

Get the most out of your herbicide application

This article has tips and links for information on spraying in windy conditions, when to spray uneven crop, spraying at the right crop stage,
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June 17, 2015

How to identify a spray contamination issue

Herbicide damage to canola can take many forms. Here are some clues to look for….
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Featured image for “Weeds: When would a second in-crop application make sense?”
June 10, 2015

Weeds: When would a second in-crop application make sense?



A second application of in-crop herbicide is not always economical if the crop is well established, competitive and ahead of the remaining weed population.
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Featured image for “Grassy weed control in HT canola”
June 10, 2015

Grassy weed control in HT canola

Grassy weeds are getting ahead of the canola in some fields. Timely weed control is essential.
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Featured image for “In-crop weed management after a frost”
June 3, 2015

In-crop weed management after a frost

Wait for signs that canola plants have started regrowing before spraying after a frost.
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Featured image for “Add insecticides to herbicides only when necessary”
June 3, 2015

Add insecticides to herbicides only when necessary

Combining pest control operations to save trips over the field may seem like good economic sense, but consider the following when making this decision….
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Featured image for “Keep It Clean: Two timely reminders”
June 3, 2015

Keep It Clean: Two timely reminders

(1) Many insecticides have limits on how many times a year they can be sprayed on a canola crop. (2) Check approvals for all
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May 21, 2015

Top 10 things to look for after emergence

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Featured image for “Three timing options for early weed control”
May 21, 2015

Three timing options for early weed control

Weeds will be going strong with the sun, especially if they have established roots that reach moisture while newly seeded crop battles dry topsoil
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Featured image for “Early weed control in cool or frost conditions”
May 13, 2015

Early weed control in cool or frost conditions

Early weed control with lower efficacy is generally preferable to no control at all or late control with higher efficacy — as long as
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