Those green plants sticking out of the crop — are they regular redroot pigweed, or a much nastier pigweed species, such as waterhemp, or even Palmer amaranth? This has become an increasingly common question for farmers and agronomists on the eastern side of the Canadian Prairies as waterhemp that’s resistant to multiple herbicide groups continues… Read More
Category: Soybean School West
The rule of thumb for planting soybeans in Western Canada has generally been to wait until the soil is 10 degrees C — often after canola is in the ground, but there are a number of reasons, including historical yield data, that suggest the crop would benefit from earlier planting. This Soybean School episode, recorded… Read More
The final tally hasn’t been published yet, but 2022 will go down as the new record high year for soybean yields in Western Canada, mainly southern Manitoba. Statistics Canada’s latest provincial estimate came in at 43 bushels/acre, up from 27 bu/ac in 2021 (see graph below), but Dennis Lange, Manitoba Agriculture’s pulse specialist, says he… Read More
More and more cases of waterhemp are being discovered, and last year, Manitoba saw its first confirmed finding of Palmer amaranth. As many producers are painfully aware — both weeds can be extra difficult to control, and herbicide resistance has only increased. Manitoba’s neighbour to the south is no stranger to either weed, with the… Read More
Researchers at Laval University in Quebec have developed a hydroponic lab test that could allow growers and agronomists to better deploy genetic resistance and tolerance in the fight against phytophthora root rot in soybeans. There are three main ways to curb phytophthora, explains Geneviève Arsenault-Labrecque, co-founder of AYOS Technologies, a spinoff founded by students at Laval, in… Read More
Grasshoppers are usually associated with dry conditions and go hand-in-hand with drought. And yet, grasshoppers are once again showing up in high numbers and causing crop damage in areas of the Eastern Prairies where there’s been flooding, and more than enough rain and soil moisture for the first half of the growing season. Why is… Read More
The principles around fertility and nutrient uptake in soybeans are the same, whether you’re farming in Ontario, the U.S., or Western Canada, but there are some unique or special factors to be considered by soybean growers in western and northern growing areas. Following up on this Soybean School episode from last month with Horst Bohner… Read More
2021 will certainly be remembered for the drought in Western Canada, but there were other factors, such as late frost, damaging winds, and new pests that also challenged the soybean crop on the eastern side of the Prairies. Despite all of those stresses, there was still a crop to harvest in most cases, with yields… Read More
Drought in 2021 has caused some crops to not use all of the available nutrients in soil, and soil tests suggest that some fields have elevated soil nitrate levels. High soil nitrate levels can pose a problem for next year’s soybean crop, as they can prevent nodulation from happening which could prove a problem later… Read More
Adequate root nodulation is critical for filling soybean pods with seed, as there’s a strong correlation between the number of nodules on soybean plants’ roots and yield. But in a dry year, the number of nodules might not matter quite as much, as soybeans can compensate for reduced nodulation by producing larger nodules. As part… Read More