A herbicide layering strategy uses a pre-seed treatment on emerged weeds while using soil-applied products simultaneously to control weeds that emerge a couple of weeks after the initial application. The pre-seed treatment helps to remove early-emerged weed pressure while the soil-applied application, when activated by moisture, provides extended control to help reduce weed pressure prior to the application of an in-crop herbicide. This type of strategy not only helps with early weed removal and allowing the crop to establish and take advantage of the nutrients and moisture available, but it also provides farmers more options for an in-crop application that will best target the later-emerging weeds that have to be dealt with.

Take a layered approach to herbicides

Develop an effective herbicide layering strategy — it could be one of your most powerful tools in the fight against herbicide resistance

It’s no secret that herbicide-resistant weeds are making life increasingly difficult for many crop growers in Western Canada, but the situation is far from hopeless, says an agricultural expert. Canada currently ranks third in the world for herbicide-resistant weeds, trailing only the United States and Australia in that category. Studies have shown there are currently […] Read more

(File photo by Dave Bedard)

Link broken in glyphosate supply chain, Bayer says

Company provides heads-up on 'force majeure event'

No one is yet using the word ‘shortage’ but farmers may need to get ready for less Roundup temporarily, following a “force majeure” event at a plant supplying an ingredient in the recipe for glyphosate. Bayer, the chemical company whose Roundup brand remains the best known of the glyphosate herbicides, reported as much in an […] Read more



(Dave Bedard photo)

Bayer wins second straight verdict in a Roundup cancer case

Plaintiff's settlement demands unreasonable, company said

Reuters — A California jury found that Bayer’s Roundup herbicide was not the cause of a woman’s non-Hodgkin’s lymphoma, Bayer said on Thursday, delivering the chemical giant its second trial victory over claims the popular herbicide causes cancer. The jury in San Bernardino County found that Donnetta Stephens’ cancer was not caused by her exposure […] Read more






To hit up problem weeds, such as herbicide-resistant kochia (far left photo), Alberta farmer Dallas Vert applies a post-harvest weed control treatment of Valtera. Last year, Saskatchewan farmer Dallas Leduc’s post-harvest application of Roundup ProActive 360 tank mixed with four ounces of 2,4-D worked well on Canada thistle (middle photo) and narrow-leaved hawk’s beard (right) on his farm.

Zap troublesome weeds in the fall

Whether it works best pre- or post-harvest depends on several factors

A sampling of western Canadian producers, when asked about their fall weed control measures, have most generally agreed that either a pre- or post-harvest herbicide application is a valuable management tool. Most of the farmers contacted leaned toward a post-harvest treatment with a glyphosate product, although there are a number of caveats that come into […] Read more


(Dave Bedard photo)

U.S. judge rejects Roundup settlement plan as ‘unreasonable’

Proposal would cover suits over future illnesses

Reuters — A U.S. judge rejected Bayer’s US$2 billion class action proposal to resolve future lawsuits alleging its Roundup herbicide causes cancer, saying in a Wednesday order that parts of the plan were “clearly unreasonable.” U.S. District Court Judge Vince Chhabria in San Francisco said the proposal “would accomplish a lot for Monsanto,” which Bayer […] Read more

(Dave Bedard photo)

Mexican judge rejects industry bid to halt GMO corn, glyphosate ban

Farm council warns of lost productivity

Mexico City | Reuters — A Mexican federal judge ruled against a request by the National Farm Council to freeze a government plan to ban genetically modified (GMO) corn and the widely used herbicide glyphosate by 2024, the national science council said on Monday. Judge Martin Adolfo Santos Perez’s ruling allows the executive order issued […] Read more