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Predators, such as (A) an Orius nymph, (B) Asian lady beetle, (C) aphid midge larva, and (D) parasitic wasps typically suppress early-season infestations of soybean aphid.
Crops, Oilseeds

U.S. study questions neonics for soybean aphid control

The effectiveness of the insecticide has diminished by the time the plants 
are at the stage when the insects arrive

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A multi-university study says that neonicotinoid insecticide seed treatments have little effect on soybean aphid populations, as the pesticide has disappeared in plant tissue by the time the aphids arrive. The two-year study was a joint effort of Purdue University, Iowa State University, Kansas State University, North Dakota State University, the University of Minnesota, South
Green lacewings are an effective biocontrol for soybean aphid in Manitoba fields.
Crops

Preserve natural habitat and enjoy free pest control

Predatory and parasitic insects can contribute to pest suppression for your crops

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Pest control services provided by naturally occurring, beneficial insects save growers in the United States around US$4.5 billion per year. Add that to the just over US$3-million benefit they provide through pollination of crops, and these are pretty valuable critters to have on the farm. New research at the University of Manitoba is trying to
Rachel Parkinson (r) and Professor Jack Gray use a “video game” to study pesticide effects on insects.
Did you know?, News

Flight simulator shows pesticide effects

High-tech approach at the University of Saskatchewan uses virtual reality more common to video games


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A research project at the University of Sask­atchewan is using a virtual reality flight simulator to measure how locusts are affected by pesticides. Rachel Parkinson, a biology master’s student, is trying to see how insects react to neonicotinoids. “There is a lot of controversy over these pesticides,” said biology professor, Jack Gray, Parkinson’s supervisor. “They
Corn rootworm is in Manitoba, but there’s an easy solution — rotate.
Crops, Local news

More corn rootworm found in Manitoba

It’s already a major pest in the U.S. Corn Belt, but it can still be easily controlled here

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There’s another reason not to grow corn on corn in Manitoba: corn rootworm. The insect, which as its name implies, feeds on corn roots and is a major pest in the American Corn Belt, is showing up in greater numbers in Manitoba. But Manitoba Agriculture entomologist John Gavloski says there’s an easy fix: crop rotation.
Larvae on sclerotinia infected plant tissue.
Crops, Local news

Crop insect concerns low, some soybean crops report brown spot

Manitoba Insect and Disease summary for August 17

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Summary Insects: Insect pest concerns are currently low. Most canola crops are now past the stage where Lygus bugs would be of concern. Only trace levels of soybean aphids have been found so far. Grasshopper counts have so far generally been low. Plant pathogens: Various diseases continue to be reported in field crops.. Disease Update Corn:
Fusarium head blight in canary grass.
Crops, Local news

Lygus bugs, moths present in sunflowers, keep your eye on stored grain

Manitoba Insect and Disease summary for August 10

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Summary Insects: Insects of highest importance to scout for currently are Lygus bugs in canola and sunflowers, and banded sunflower moths in sunflowers. Only trace levels of soybean aphids have been found so far. There have still been no reports of high levels of larvae of bertha armyworms in Manitoba. Plant Pathogens: Various diseases continue
Lygus bug on flax.
Crops, Local news

Lygus bugs reach economic thresholds in canola fields

Manitoba Insect & Disease summary for July 27

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Summary Insects: Lygus bugs around economic threshold levels have been noted in a few canola fields in eastern Manitoba. Banded sunflower moth adults have also been noted; late bud to early bloom stage is when sunflowers should be monitored for seed feeding insects like banded sunflower moth, Lygus bugs, and red sunflower seed weevils. Trace levels of soybean aphid have been found on soybeans near Fannystelle and Lac du Bonnet;
Manitoba’s fruit growers are expecting 2016 to tally good or better-than-average yields of strawberries, saskatoons, raspberries and cherries, despite persistent rain and lingering worries about a return of spotted wing drosophila.
Crops, Local news

Growers vigilant for fly that can devastate fruit crops

This season has had its share of disease and weather pressures, but above-average fruit crops are being reported

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Manitoba’s fruit growers are keeping a close eye for signs of spotted wing drosophila, aiming to avoid the toll the tiny fly took on fruit crops last year. Some growers have already detected it and have applied an approved insecticide to combat against another infestation, provincial fruit crops specialist Anthony Mintenko said July 14. The
Crops, Local news

Alfalfa weevil levels seen high, crop scouting for diseases still needed

Manitoba Insect & Disease summary for June 29

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Summary Insects: Alfalfa weevil is still at high levels in some alfalfa fields. Some alfalfa hay fields are being cut early as a result. Pea aphid levels are near or above economic threshold in some pea fields, although levels are sporadic as other fields have quite low levels. Plant pathogens: Scouting should be continued for all crop
Anthony Mintenko, Manitoba Agriculture’s fruit crops industry development specialist, began putting out detection traps to keep a lookout for spotted wing drosophila last week.
Crops, Local news

Fruit Crops Branch begins monitoring for SWD

The Manitoba Agriculture Crop Industry Branch’s Fruit Crops Program began monitoring for spotted wing drosophila last week

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Commercial fruit growers in Manitoba welcome all visitors, but the one no one wants to see this summer is spotted wing drosophila (SWD). The tiny vinegar fruit fly was first detected in 2013 in Manitoba but that year — and in 2014 — showed up in early August after most fruit crops were already harvested.

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