Brushing Up on Blackleg Resistance
If you’re in a growing area with warm, humid conditions or even in a dry area that has just the right amount of timely rains, your canola is at risk for blackleg.
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If you’re in a growing area with warm, humid conditions or even in a dry area that has just the right amount of timely rains, your canola is at risk for blackleg.
Tank mixing herbicides for improved weed control and resistance management is an investment in crop yield and can lower future costs of weed control on your farm. In my experience, working with farmers for successful weed control includes a main herbicide with the addition of a herbicide tank-mix partner specific to the weeds in a field. The addition of a tank-mix partner improves weed control by additive benefit or synergistic benefit. An additive benefit is where the tank-mix partner controls weeds that are not controlled (or are only suppressed) by the main herbicide in the tank-mix. A synergistic benefit is where the control of a certain weed by the herbicide tank-mix is better than the control rating of either herbicide on its own.
Diversity of crops is critical to be able to farm sustainably here in Western Canada, and to ensure long term profitability. This is easier said than done. As farmers, there are many limiting factors of growing certain crop types in certain regions. For example, in the southern Prairies, many are currently debating what to grow with lack of moisture. In the Peace River region, many are limited because of access to markets. The shorter growing season of Western Canada, especially in the northern Prairies, limits what crop types we can grow. Economics and markets also have a major role in a farmer’s decision on what to grow. Even with all these barriers, the benefits of extending your crop rotation greatly outweighs the hassle. Farmers who diversify their crop types on farm can see significant benefits, of which are outlined below.
When canola growers see the clubroot situation in central Alberta, a reasonable question that many likely ask themselves is how do I avoid that?
One weed spent its time travelling across the Prairies last year. Kochia is showing up in more fields year after year, and quickly developing resistance to multiple groups of herbicides. The relatively dry spring and hot, dry summer we had in many parts of Western Canada in 2018 was extremely favourable to this troublesome tumbleweed. Here’s a quick guide on how to identify and control kochia before it sets seed in your fields.
All canola growers are aware of blackleg but its impact can sometimes be under-estimated. Although genetic resistance and general understanding of the disease has improved in recent years, there were still some significant gaps that made it difficult to manage the disease with any precision. ‘Grow an ‘R’ rated variety and you should be fine’ used to be the best standard recommendation when it came to variety selection. Fortunately, now there are more tools that are available to growers that are better at keeping the disease in check, to realize even bigger gains.
Canola harvest will be happening soon, and farmers are looking for ways to get as much of their crop in the bin as possible. The traditional approach to accomplish this has been to swath at 60% seed colour change (SCC). Any earlier, and you could lose yield, any later and you can also lose yield – seems like a pretty narrow window! But as many growers can attest, this 60% rule is more art than science.
It’s that time of year again where growers are brushing up on their agronomy to help increase yield, minimize costs and maximize ROI. One topic that many like to refresh on around this time is seeding rate.
The costs of managing the disease may be higher than you think. Clubroot is top of mind for many growers these days, as the disease has recently been discovered in new areas including High Prairie, the Peace River Region of Alberta, and northwest of North Battleford. Prior to these discoveries, clubroot was mostly concentrated in north-central Alberta and parts of Manitoba. The footprint has steadily been spreading through the canola growing regions of Western Canada.