Figure 1: A four-leaf seedling plant with cotyledon leaves beside an eight- to 10-leaf plant that is beyond the susceptible stage for control with most herbicides.

Pest Patrol: How do I get better control of lamb’s quarters?

#PestPatrol with Mike Cowbrough, OMAFRA

Reading Time: 2 minutes Lamb’s quarters has consistently been identified as the most abundant and most problematic weed affecting field crop production in Ontario. Yet the Pest Management Regulatory Agency database contains hundreds of herbicides that list lamb’s quarters as either suppressed or controlled. It’s safe to say there is an arsenal of products available to farmers, but our […] Read more

Concept of making money agriculture

Rebate roundup for Eastern Canada

A quick glimpse at programs and opportunities available to growers for 2017

Reading Time: 6 minutes With the planting season just weeks away, we’re putting together a “Rebate Roundup” for eastern Canadian growers with our overview of the rebates offered by industry. Some of the companies contacted for our new annual “Rebate Roundup” feature say they don’t offer rebates — they prefer to stick to simple prices. Other farm input suppliers […] Read more


Mowing that patch before it went to seed might have been a better strategy that using an ineffective herbicide.

The more you spend, the less they work

If you want to keep using herbicides, give them an occasional rest and try a winter cereal or a heavier seeding rate

Reading Time: 3 minutes Neil Harker says that when you no longer have the big hammers in the tool box, it’s time to use the little ones. For the Agriculture and Agri-Food Canada (AAFC) weed scientist, wild oat herbicides are the big hammers, and the little ones are integrated weed management practices. Harker says that although western Canadian producers […] Read more

Spraying machine working on the green field

Goodbye glyphosate?

A flood of cancer suits in the U.S. threatens to topple farmers’ most valuable herbicide

Reading Time: 6 minutes Last September I warned readers of a growing public backlash against glyphosate herbicide, and I wrote of the co-ordinated attack on glyphosate by Avaaz, an online activist community that is claiming credit for the refusal by European regulators to renew the licence for glyphosate, instead only granting an 18-month extension to the expiring licence. But […] Read more


Figure 1. Dicamba drift on a susceptible soybean crop. Symptoms will include cupping of trifoliate leaflets, shortening of internodes and a dark green colour.

Pest Patrol: Xtend soybeans, spray drift and controlling glyphosate-resistant fleabane

#PestPatrol with Mike Cowbrough, OMAFRA

Reading Time: 2 minutes I want to plant Roundup Ready 2 Xtend soybeans this season to control my glyphosate-resistant Canada fleabane. But I keep hearing about the increased risk of drift with the dicamba-based herbicides. Is this fear mongering, or do I need to pay special attention when applying herbicides containing dicamba? We can learn a lot about the […] Read more

Table 1: Enlist and Roundup Ready 2 Xtend soybean response one week after application with glyphosate, dicamba, 2,4-D and Liberty (glufosinate). Note that the plant on the left is the control (unsprayed) while the plant to the right has been sprayed with one of the four herbicides.

Pest Patrol: Enlist vs. Extend

#PestPatrol with Mike Cowbrough, OMAFRA

Reading Time: 2 minutes What is the difference between Enlist and Roundup Ready 2 Xtend soybeans, and how good are they at controlling glyphosate-resistant weeds? The key selling point of each new seed system is that they have tolerance to specific “auxinic” herbicides that traditionally have been used to control weeds in corn and cereals, and in theory should […] Read more


Palmer amaranth. (United Soybean Board photo)

Minnesota probes Palmer amaranth’s sudden appearance

Reading Time: 2 minutes Chicago | Reuters — Minnesota has launched an investigation to find the source of seed mixes contaminated with weed seeds after the aggressive, herbicide-resistant Palmer amaranth weed was found on 30 areas planted in a federal conservation program. The weed grows very fast, reaching up to eight feet in height and can hold back commercial […] Read more

Figure 1. The system used to make a small batch of herbicide for spot spraying: a two-litre pop bottle, spray nozzle and 10 ml syringe.

Pest Patrol: Garlic mustard control

#PestPatrol with Mike Cowbrough, OMAFRA

Reading Time: 2 minutes Are there any herbicides that I could use to control garlic mustard on the farm? Garlic mustard is an early flowering weed that’s highly visible at the edge of farm woodlots and around buildings and grain bins in the spring. Although garlic mustard is rarely found competing in agricultural crops, it can invade forests and […] Read more


Close up of man reading at the digital tablet

Before you believe it

Because our vulnerability to misinformation is growing every day, the easy-to-use SMELL test needs to become like an app that we turn on every time we connect to the web, listen to a radio, or even talk to each other

Reading Time: 6 minutes If our food looks bad, tastes bad, or smells bad, we won’t eat it. So why don’t we treat information the same way? After all, we are told information is power. Information has value. Information is essential to modern society. So if information “smells” bad, shouldn’t we be wary of consuming it as well? Dr. […] Read more

Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?

Pest Patrol: Have genetically engineered (GE) crops resulted in more herbicide-resistant weeds in Ontario?

#PestPatrol with Mike Cowbrough, OMAFRA

Reading Time: 2 minutes There is a belief that the increased acreage planted to genetically engineered (GE) crops has led to an increase in herbicide-resistant weeds. However, results from the University of Guelph’s herbicide-resistant weed-testing laboratory indicate otherwise. Table 1 (below) summarizes the number of species confirmed as resistant to common herbicides used in Ontario during the past 40 […] Read more