Adult trap counts show a few potential hot spots for larvae feeding, but numbers can be quite different field to field. Check each field!…
Insects
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Scout lygus at late flowering and podding stages using a standard insect sweep net of 38 cm (15") diameter. A threshold of 10 per 10 sweeps is suitable for dry conditions. A threshold of 20-30 per 10 sweeps is suitable for good growing conditions…
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Even if an area is low risk according to provincial risk maps, local hot spots can flare up – which is why each farm should make its own assessment on a field by field basis… -
Diamondback moth larvae are generally low across the Prairies so far, but one hot spot has been noted in Rural Municipality 10 in Saskatchewan. This R.M. is south of Regina, near the U.S. border. Some populations of diamondback moth above the economic threshold have also been found in Eastern Manitoba recently… -
While out scouting for insects feeding on pods, you might also find these insects at work. Each of the insects in the quiz will feed on pest insects of canola, which is why we call them "beneficials". You might also call them Field Heroes…
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Check pods for feeding from bertha armyworm, diamondback moth larvae, lygus and other pests. If any pod feeders are found, make accurate counts in at least three locations 50 metres apart in each field. Then make spray decisions based on thresholds… -
Can you identify these five green worms that can be found in canola at this time of year?…
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While scouting canola fields at flowering and podding stages, dig up a few plants in each field and look at the crown and primary root. If the crop has above-ground symptoms, compare the roots of healthy and unhealthy plants. That might help you discover the problem… -
Eggs are not a target for management, but this is a fun quiz that will improve your agronomy knowledge. Look out for these when out scouting the soil or plants for other issues. This is a matching quiz – five eggs, five choices. Can you match all five?…
