GFM Network News


Figure 1: Purple deadnettle in a wheat field — October 2018 at a yield-reducing population density of around 500 plants per square metre.

PHOTOS: Pest Patrol: Purple deadnettle and henbit control in winter wheat

#PestPatrol with Mike Cowbrough, OMAFRA

Q: I’m seeing more henbit and/or purple deadnettle in my winter wheat crop. Should it be controlled, and how? A: Henbit and purple deadnettle are often discussed interchangeably because they look similar, are from the same genus (Lamium) and have similar emergence patterns (mainly in the fall, but henbit will also emerge in spring). Both […] Read more

Bayer cancels plans to sell U.S. crop product in 2020 over safety concerns

Chicago | Reuters – Bayer AG has scrapped plans for wide sales next year of a chemical that is intended to protect U.S. crops from yield-robbing worms, citing ongoing safety concerns. The decision is the latest setback for Germany-based Bayer following its acquisition of Monsanto for $63 billion in 2018. Bayer is separately battling thousands of lawsuits claiming Monsanto’s glyphosate-based […] Read more


U.S., Canada, 14 others slam EU farm product regulation at WTO

Geneva | Reuters — The United States and 15 other countries launched a broadside of criticism at the European Union on Thursday, saying its “hazard-based” approach to regulating pesticides and other “critical tools” used by farmers was damaging livelihoods worldwide. Their statement, submitted to the World Trade Organization, said the EU’s approach created great uncertainty […] Read more

Agricultural plastics not part of federal ban

The federal government’s plan to halt Canada’s consumption of single-use plastics such as shopping bags, straws and stir sticks over the next couple of years won’t extend to farm chemical containers and grain bags. Cleanfarms, the national industry stewardship body operating waste management and recycling programs for agricultural packaging, said Thursday that plastic products such […] Read more


Several factors relating to water quality can affect product performance in the field, often to the detriment of the crop.

Keep an eye on water quality

Water can play havoc with spray performance, especially with the rise in tank mixing

The 2019 growing season is now within sight and with it, another season’s worth of herbicide, fungicide and insecticide applications. Given the challenges that can arise with sprayers and their products, it’s worth revisiting the subject of water quality and the potential impact of factors such as temperature, hardness and pH on product performance. With […] Read more

Applicators need relevant and timely information regarding chemical applications for the best performance.

Better labels

This new initiative aims to create crop protection labels producers will actually want to use to make spraying decisions

It’s a familiar spot to find yourself in. You want to spray a new product. Or maybe you want to tank mix two chemistries that you’ve never sprayed together before. The crop is ready, the sprayer is set, but now you see there are label questions about specific rates, ground speeds, buffer zones, clean-out procedures […] Read more


Figure 1: This unsprayed control treatment consists mainly of common ragweed but with green foxtail, common lamb’s-quarters, witchgrass, crabgrass and red-root and green pigweed.

Pest Patrol: Weed control in identity-preserved, non-GMO soybeans

#PestPatrol with Mike Cowbrough, OMAFRA

A decade of public research trials evaluating weed control in non-GMO soybeans at the University of Guelph has demonstrated that the key to success is to start with a soil-applied herbicide program that has three or more different modes of action. In Ontario, there are a number of common weeds (e.g. common ragweed, lamb’s-quarters, foxtail […] Read more

Canada fleabane seedlings that will be treated with glycine and glyphosate combinations in a growth chamber environment.

Pest Patrol: The continuing fight against glyphosate-resistant Canada fleabane

#PestPatrol with Mike Cowbrough, OMAFRA

Glyphosate-resistant Canada fleabane is found in 30 counties across Ontario and can cause yield losses exceeding 50 per cent in both corn and soybeans. Since there are only a few other herbicides that are effective at controlling it, this glyphosate-resistant weed has been one of the most troublesome weeds in Ontario. So, what if you […] Read more


U.S. appeals court orders EPA to ban pesticide said to harm children

New York | Reuters – A divided federal appeals court on Thursday ordered the U.S. Environmental Protection Agency to ban a widely-used pesticide that critics say can endanger children and farmers. The 2-1 decision by the 9th U.S. Circuit Court of Appeals in Seattle overturned former EPA administrator Scott Pruitt’s March 2017 denial of a petition by […] Read more