GFM Network News


Using a product on a crop that is not registered could cause major trade consequences and the producer could be held responsible.

What you need to know about maximum residue limits

Q & A with an expert

Q: Maximum residue limits: what are they and why are they important?  A: In the agricultural industry, we hear the term maximum residue limit (MRL) referred to on numerous occasions. The term refers to the maximum amount of pesticide residue expected to remain in food products when a crop protection product is used according to […] Read more

Adjuvants help keep pesticide ingredients suspended in spray water and improve adherence to what you are targeting.

What to do – and what not to do – when using adjuvants

How to get the most out of your crop protection products

Most pesticide labels include a section indicating what type of adjuvants will help you get the most out of your crop protection applications. These labels feature language such as “required,” “recommended” or “can be used” to help you understand which adjuvants are essential to your mix and which ones are optional. But it’s not as […] Read more


Bayer puts Roundup future claims settlement on hold

Judge questions proposal for third-party scientists to rule on chemical's carcinogenicity

Frankfurt | Reuters — Bayer was forced on Wednesday to delay part of a proposed settlement of allegations that its widely used herbicide Roundup caused cancer after a U.S. judge questioned its plan to deal with future claims. The German company said that lawyers representing those preparing a class action had withdrawn a request for […] Read more

As you begin harvesting your crops, take detailed notes about the weed populations you find. Each field will tell a story about your weed control strategies and how effective they are. Fall quackgrass is shown here.

Benefits of post-harvest weed control applications

Q & A with an expert

Q: Should I be thinking about resistance management at harvest? A: We don’t often think about resistance management after harvest, but both during and after harvest is a great time to start observations and applications. As you begin harvesting your crops, take detailed notes about the weed populations you find. Each field will tell a […] Read more


How to maximize the efficacy of your crop protection products

For starters, ensure you have adequate water quality

No farmers want to unintentionally alter the efficacy of their crop protection products because of water quality pumped into the tank. However, farmers may do just that if they do not have their farm water source tested every year and take the appropriate actions based on the results of those tests. There are several factors […] Read more

On the left is regrowth of glyphosate-resistant kochia following a harvest date in early August. On the right is regrowth of glyphosate-resistant kochia following the same harvest date but with a post-harvest application of glyphosate and saflufenail.

Seeding strategies benefit pre- and post-harvest weed control

The most effective treatments can involve decisions made at seeding

The early reports from a couple of ongoing field research projects are suggesting some of the most effective treatments for pre- and post-harvest weed control might actually involve decisions made at seeding, say weed specialists. In Saskatchewan, Clark Brenzil, provincial weed specialist with Saskatchewan Agriculture, is looking at how narrower row spacing (10 inches) as […] Read more



Wild oat is showing significant herbicide resistance, says Saskatchewan’s provincial weed control specialist.

What weed experts say you should have your eye on in 2020

A province-by-province look at what you need to know about weeds this growing season

Three provincial weed specialists offer their insights on the weeds farmers may find in their fields this growing season and what can be done about them. Manitoba Tammy Jones, a Manitoba Agriculture weed specialist, lists redroot pigweed, lamb’s quarters and green and yellow foxtail as the biggest weed threats this year. Winter annuals like stinkweed […] Read more


When weeds are spotted in fields, best management practices like rotating crops, applying herbicides and controlling weeds when they are small are recommended.

How weed seeds move into your fields

Q & A with an expert

Q: Where are all these weeds coming from? A: Despite our best management practices, we will never eliminate weeds from our fields. Weed seeds will continue to find their way onto our fields in not so mysterious ways. Excluding volunteer crops, the most significant ways new weeds move onto our fields is by wind, water, […] Read more

Pre-seed weed control is important this spring

Weed control will be a different challenge this year. With little fall weed control and good moisture, fields will have an abundance of overwintered annuals, such as cleavers, flixweed, narrow-leaved hawk’s beard and volunteer canola, alongside spring emergence of other annual and perennial weeds. These overwintered annuals are a particular challenge as they are often […] Read more