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 are seeing are the result of sugars being trapped in the leaves as the plant shuts down.
Foster adds that in some cases growers are seeing leaves with a leathery or coppery bronze look compared to the traditional yellow hue. In these cases, cercospora leaf blight could be the culprit.
When the presence of cercospora has been confirmed, it’s recommended that growers not use beans from these fields for seed stock because the disease will carry over to the seed, he notes.
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