pesticides Archives - Page 9 of 15

Bryce Geisel says that Group 2 herbicides are still important to Western Canadian farmers, despite resistance issues.

Developing resistance: Group 2 herbicides

Each herbicide group kills weeds differently. Weed resistance differs by herbicide group 

By Lisa Guenther November 2, 2017

When talking about herbicide resistance, Bryce Geisel likes to make sure people realize that spraying herbicides doesn’t cause resistance in a weed. Instead there are individual plants that, by chance, resist the herbicide. Those plants survive and pass on their resistance traits. “And with Group 2s in particular, it’s just altering the target site,” says […] Read more

Crops

Global study finds trace neonics in much of world’s honey

By Grainews Staff, GFM Network News October 5, 2017

A study by Swiss scientists has found trace levels of at least one neonicotinoid pesticide in three-quarters of the honey samples it collected from around the world. The study, spearheaded by a team from Switzerland’s Universite de Neuchatel and published in Friday’s edition of the journal Science, was meant to assess “global exposure of pollinators […] Read more

Crops, Reuters

EU starts in-depth probe of Bayer-Monsanto deal

By GFM Network News August 22, 2017

Brussels/Frankfurt | Reuters — The European Commission has started an in-depth investigation of Bayer’s planned US$66 billion takeover of U.S. seeds group Monsanto, saying it was worried about competition in various pesticide and seeds markets. The deal would create the world’s largest integrated pesticides and seeds company, the Commission said, adding this limited the number […] Read more

Reuters

U.S. senators seek ban on pesticide chlorpyrifos

By GFM Network News July 25, 2017

New York / Reuters – A group of Democratic senators hopes to ban a pesticide the U.S. government has greenlighted for use, according to a bill unveiled on Tuesday in a challenge to Republican President Donald Trump’s push to loosen environmental regulations. The bill, introduced by Senator Tom Udall of New Mexico, would outlaw chlorpyrifos, […] Read more

Crops, Features

Sociology and herbicide-resistant weeds

Think weed management strategies are all about agronomy? There are other factors

By Angela Lovell July 5, 2017

Would you tell your neighbour how to farm? Not likely. On the other hand, what if this reluctance to “stick your nose in” was creating a real barrier to the adoption of practices that could help slow down the spread of herbicide resistant weeds? Scientists have a word for this way of thinking. They call […] Read more

Crops, Reuters

Field studies fuel dispute over whether neonics harm bees

By GFM Network News June 30, 2017

London | Reuters — Two major studies into how bees are affected by a group of pesticides banned in Europe gave mixed results on Thursday, fuelling a row over whether the neonicotinoid pesticides are safe. The studies, one conducted across three European countries and another in Canada, found some negative effects after exposure to neonicotinoids […] Read more

Implementing strategies to stave off herbicide resistance can bring increased costs  to individual farmers in the short term, while the economic benefits are delayed.

Crops, Features

Managing herbicide resistance costs

Farmers considering herbicide resistance strategies are looking at the economics first

By Angela Lovell June 26, 2017

There are several reasons many farmers haven’t yet adopted herbicide resistance management (HRM) plans. These include a lack of information, the complexity of different management strategies and limited time. But a major reason is still economics. Many farmers worry about the costs of implementing a resistance management plan, especially if they’re uncertain about the potential […] Read more

Corn, Crops

Critical weed-free period in corn

Keeping your corn crop weed free through the key stages can lead to higher yields

By Michael Weir June 21, 2017

The critical weed-free period (CWFP) in corn takes place from emergence to V4 stage (six-leaf stage). Although corn is typically seen as a longer-season crop, maintaining a clean, weed-free field during this period is critical. A weed-free field is important during all stages of the CWFP. Corn isn’t a very competitive crop, so during the […] Read more

Group 2 (Odyssey) injuries in canola on display at CanoLAB 17 in Vermilion. Staff mimicked a drift injury in the greenhouse. Herbicide injury symptoms,  such as purpling and thickened stems, can mimic other issues.

Canola, Crops, Features

Diagnosing herbicide injury

Application can go wrong. Know how to limit and recognize herbicide injury

By Lisa Guenther June 14, 2017

When it comes to diagnosing potential herbicide injury, record keeping is vital, say Canola Council of Canada agronomists. “With soil residual herbicides, herbicide history is really important,” says Ian Epp, agronomy specialist with the Council for northwestern Saskatchewan. Because soil residual herbicides are often applied the previous year, good record keeping is important, he adds. Last […] Read more

Seven days after Ken sprayed his herbicide-tolerant canola crop, most of the plants in one field were dead or dying.

Canola, Crops, Features

Crop Advisor’s Casebook: What caused this 80 per cent loss in canola?

A Crop Advisor's Solution from the February 21, 2017 issue of Grainews

By Jason Sauchuk May 19, 2017

Ken, a central Alberta producer who farms 2,000 acres of cereals and oilseeds, in addition to 150 head of cattle, called me after he discovered 80 per cent of the canola plants he’d seeded in one field were dead in the seed row. He thought the problem might be a sprayer issue, since a prominent […] Read more

Daily Network News

Southern California honeybees show resistance to varroa mites

Pulse Weekly: SaskPulse optimistic despite input, crop price concerns

Canadian aquaculture should be classed as agriculture, industry groups say

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