Weather conditions that can volatilize dicamba herbicide

Weather conditions that can volatilize dicamba herbicide

Avoid applying all herbicides during temperature inversions too

In addition to drift caused by wind the herbicide dicamba can end up off target due to volatilization, also referred to as vapour drift, and temperature inversions. Last week’s stories on dicamba (see ‘Related Articles’ below) prompted a reader to ask about the weather conditions for both. The University Minnesota explains it on its website

A dicamba-damaged soybean plant.

Canadian, U.S. farmers diverge on dicamba spray issues

While U.S. farmers have been devastated by dicamba drift, it’s been a non-issue in Canada

Canadian farmers haven’t experienced the same dicamba drift debacle their U.S. neighbours have — but that doesn’t mean they won’t also pay a price for this high-profile failure. Spray expert Tom Wolf says a cooler climate and differences in the way the product is used here have spared Canada the worst immediate effects. The bill


Dicamba spray drift declining in Canada

The climate and how the herbicide is used here both are factors

There haven’t been many dicamba drift complaints in Canada since Monsanto commercialized dicamba-resistant soybeans in 2016. In 2019 Health Canada received just “16 reports of dicamba-related environment incidents in Canada related to drift and over-the-top application of dicamba to soybean,” a Health Canada official wrote in an email June 10. Health Canada, which regulates pesticides in Canada through the

Precautions to take when applying dicamba

Precautions to take when applying dicamba

The best way to avoid dicamba drift is to follow label directions. Although dicamba can be applied to Xtend soybeans from pre-emergence to early flowering, applying pre-emergence has advantages. One is if your crop isn’t up, your neighbour’s might not be either and can’t be damaged by drift. “Dicamba provides residual control for a short


Bayer’s cross symbol hangs in a terminal at Frankfurt International Airport. (Typhoonski/iStock Editorial/Getty Images)

Investors pile into Bayer bond to pay settlement charges

Amsterdam | Reuters — Investors piled into a Bayer bond on Wednesday that will help pay for a long-negotiated settlement of U.S. lawsuits claiming its widely-used herbicide Roundup caused cancer. Demand for the four-tranche bond sale, whose proceeds will include the litigation payments, exceeded 17.5 billion euros, nearly three times the six billion euros (C$9.15

(Dave Bedard photo)

U.S. settlements not expected to change availability, labels for glyphosate, dicamba

Bayer to pay up to US$12 billion to resolve ag chem, PCB claims; company is "not contemplating" a Canadian glyphosate settlement

Updated, June 25 — Farmers in Canada, the U.S. and elsewhere shouldn’t expect any changes to availability or label directions for Bayer’s stable of glyphosate and dicamba herbicides, coming out of a massive settlement for thousands of lawsuits, the company says. The German company announced Wednesday it expects to spend up to $12 billion in


File photo of a Mississippi soybean field with glyphosate-resistant amaranth. (Yanbo Huang photo courtesy ARS/USDA)

Bayer scraps plans for U.S. dicamba production

Move unrelated to court ruling, company says

Chicago | Reuters — Bayer said on Tuesday it will scrap a nearly US$1 billion project to produce dicamba in the United States, but said the move is unrelated to a federal court decision that blocked sales of dicamba-based herbicides. The German-based company is moving to save cash as it wages an expensive legal battle

(Leonid Eremeychuk/iStock/Getty Images)

U.S. EPA permits farmers’ use of dicamba until July 31

Court ruling blocked product registrations

Chicago | Reuters — The U.S. Environmental Protection Agency said on Monday that farmers can use existing supplies of a herbicide linked to crop damage, after a federal court blocked sales and use of the product last week. The EPA said farmers have until July 31 to use supplies of dicamba-based herbicides that they had


(Leonid Eremeychuk/iStock/Getty Images)

Court blocks sales of dicamba in U.S.

Bayer says it's seeking new EPA registration for 2021

Updated — Reuters — A U.S. appeals court has blocked Bayer from selling an agricultural weed killer in the United States, the latest setback for a business already fighting an expensive legal battle over another product. A three-judge panel of the Ninth U.S. Circuit Court of Appeals ruled the U.S. Environmental Protection Agency (EPA) substantially