Category: Soybean Disease, Weeds & Insects

Soybean School: How wide is your spring burndown window?

If you have weeds pop up prior to planting soybeans you can control them with a burndown herbicide application. But what happens when rain and wind conspire to prevent you from applying a burndown and you have to control weeds after planting? In this episode of the Soybean School, OMAFRA weed control specialist Mike Cowbrough… Read more »

Soybean School: Investment needed to fend off nematodes

Soybean cyst nematode (SCN) is the leading cause of yield loss for the oilseed crop across North America. And unless a new source of resistance is found to fend off the pest, growers can expect to see SCN gobble up an increasing percentage of their yield in the years ahead. That was the message delivered… Read more »

Soybean School: Make resistance a priority when selecting varieties

Next time you chose a soybean variety, don’t just consider yield trials. Be sure to take a close look at disease trials; they help determine whether the yield potential of the variety you select will become reality in your field, says OMAFRA plant pathologist Albert Tenuta. In this episode of theĀ Soybean School, we catch up… Read more »

Soybean School: Ontario growers better positioned to manage dicamba

In 2017, many U.S. growers struggled to manage dicamba use with increasing acres of dicamba-tolerant Xtend soybeans. The dicamba story in Ontario, however, was much different, as growers had few issues with managing the marriage of the herbicide and the new trait. In this edition of RealAgriculture Soybean School, OMAFRA weed specialist Mike Cowbrough explains… Read more »

Soybean School: Learning from Ontario’s 2017 crop

It’s not official, but it looks like Ontario’s 2017 soybean yield will come in at around 43 bushels per acre. That’s down from the 46-bushel five-year average, but considering the challenges Mother Nature threw at the crop during the past growing year, OMAFRA soybean specialist Horst Bohner will take it. In this edition of RealAgriculture… Read more »

Soybean School: Rotating resistant varieties key to controlling SCN

Soybean cyst nematodes have been stealing yield in Ontario fields for more than 20 years. SCN-resistant varieties are a key tool to help defend against the invading pest, but growers need to ensure they’re not putting the effectiveness of these resistant varieties at risk. In this episode of RealAgriculture Soybean School, OMAFRA plant pathologist Albert… Read more »

Soybean School: Putting the pinch on cyst nematode

Soybean cyst nematode (SCN) continues to spread across Ontario. The yield-robbing pest was first discovered in the southwest of the province in 1988 and continues to expand north and eastward. OMAFRA plant pathologist Albert Tenuta encourages all growers to take a close look at their soybean fields to determine whether the pest is present. SCN… Read more »

Soybean School: Is doubling up against herbicide resistance worth the risk?

For OMAFRA weed specialist Mike Cowbrough there are three fundamentals when it comes to weed control in soybeans. The first thing growers need to remember is weeds that emerge before and with the crop have the greatest yield impact. Number two on his list is the need to keep the crop weed-free up to the… Read more »

Soybean School: Reducing residue could fend off sudden death

When it comes to integrated disease management, experts have always considered corn a non-host for diseases like sudden death syndrome (SDS) in soybeans. But that perception is changing says OMAFRA field pathologist Albert Tenuta. In this episode of RealAgriculture Soybean School, Tenuta says there is growing evidence that corn residue can harbour or allow the… Read more »

Soybean School: Why are plant leaves turning red?

Cold nighttime temperatures in recent weeks across Ontario are causing soybean plants to shut down. That’s one of the reasons why many growers are seeing oddly coloured leaves throughout their soybean crops. In this Real Agriculture Soybean School episode, Pride Seeds agronomist Dan Foster explains that in many instances the bronze and reddish leaves growers… Read more »

Soybean School: No payback for white mould revenge spraying

White mould is showing up in soybean fields across Ontario, especially in areas that have consistently seen wet weather and moderate temperatures throughout the summer. In this episode of RealAgriculture Soybean School, OMAFRA plant pathologist Albert Tenuta explains that the fungicide timing for optimal control of white mould is as flowers emerge at the R1… Read more »

Soybean School: Pre + post = successful IP weed control

What’s the best herbicide program for food-grade, non-GMO, identity preserved soybeans? It’s a common question OMAFRA weed specialist Mike Cowbrough gets from growers and we have the answer on this edition of RealAgriculture Soybean School. Cowbrough says there’s no magical herbicide that can handle all the challenges food-grade soybeans face during the growing season. But… Read more »

Soybean School: Taking a closer look at soybean aphid thresholds

The combination of increased soybean acres and high soybean aphid pressure on the prairies in 2017 has sparked conversations about thresholds, beneficial insects, and how to decide when spraying is warranted. The economic threshold for soybean aphids in Canada has traditionally been 250 aphids per plant on 80 percent of plants, with the population still… Read more »

Soybean School: Preventing those yellow patches next year

Most of the yellow patches in soybean fields in Western Canada and the northern U.S. have disappeared as the plants have recovered, or turned necrotic and died, but one of the big questions heading into harvest is: what toll did widespread issues with iron deficiency chlorosis (IDC) earlier in the season take on yields? The… Read more »

Soybean School: One-pass vs. two-pass weed control

Should you spray your soybeans once or twice? In this episode of Real Agriculture Soybean School, OMAFRA weed specialist Mike Cowbrough takes a look at how one-pass and two-pass herbicide systems compare. He notes that a one-pass program can offer effective weed control if growers keep soybeans fields weed-free through the third trifoliate stage. But… Read more »