May 10, 2017
A farmer is seeding Roundup Ready canola and the field has a lot of winter wheat volunteers and some perennials. Is the farmer better to seed or spray first? Answer: In this situation, with Roundup Ready canola being able to take a glyphosate application at any time up to the 6-leaf stage, the farmer may want to take advantage of…
May 10, 2017
Volunteer canola is a weed and competes with the crop for nutrients and water and sunlight. Volunteers in a canola crop do not make a positive contribution to yield. Growers also have other reasons to get rid of them: Volunteers do not have seed treatment, so they can introduce seedling diseases and increase flea beetle pressure. Also, volunteers in non…
May 10, 2017
If choosing to seed before spraying, weeds present will have a minimum five days — usually more — before the crop emerges. These weeds can advance very quickly in good conditions, which is why growers who seed before spraying may choose to apply in the narrow post-seeding pre-emergence window…
May 10, 2017
How do you spray weeds in a timely fashion when every day seems too windy? Too windy, according to the Guide to Crop Protection, is wind above 15 km/h. But we know that some operators will go with winds of 20 km/h and maybe a bit above…
May 3, 2017
Ultimately, another group with your glyphosate will help combat difficult weeds. Multiple groups in one pass have been shown to delay herbicide resistance – but the tank mix has to be effective…
May 3, 2017
A Canola Watch quiz in 2015 asked readers to pick the most common weeds they target in the pre-seed window on fields planned for canola. Here are the weeds ranked in order based on survey responses, along with herbicide recommendations for pre-seed application on fields planned for canola…
April 5, 2017
Follow these tips to avoid unacceptable residues: 1. Use acceptable pesticides only. Only use products that are registered for your crop and won’t cause concerns for customers. 2. Use pesticides correctly. Consult the label for proper rates and timing…
April 5, 2017
With a late harvest in many fields last fall, growers may have missed the opportunity for fall weed control. That could mean higher levels of winter annuals and perennials this spring. The delayed harvest could also mean higher amounts of volunteer canola seeds. This could be a big year for volunteer canola…
April 5, 2017
Tom Wolf, owner of AgriMetrix in Saskatoon and long-serving spray applications researcher, says higher water volume doesn’t necessarily increase herbicide performance, but it improves the consistency of performance…
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