Insects

Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “Bees and canola are good for each other”
June 19, 2013

Bees and canola are good for each other

Bees are good for canola. Canola is good for bees. Canola flowers provide an important source of nectar for honey producers in Western Canada:
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Featured image for “Aster yellows: No evidence of a problem in 2013”
June 19, 2013

Aster yellows: No evidence of a problem in 2013

Aster leafhopper numbers are quite low so far this year, down considerably from 2012. Aster leafhoppers carry aster yellows phytoplasma, so without leafhoppers to
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June 12, 2013

Insect update

Flea beetle spraying picked up again this week, as more canola fields reached thresholds. Don’t give up on flea beetle scouting just yet. Click
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Featured image for “Tank mixing herbicide with insecticide or fungicide”
June 5, 2013

Tank mixing herbicide with insecticide or fungicide

When spraying for weeds it may be economical to add an insecticide or fungicide to the tank mix to hit any insects or disease
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Featured image for “How many tank mixes are too many?”
June 5, 2013

How many tank mixes are too many?

Growers must take extra precaution with any tank mix that is not identified and approved on the product label. The risks with off-label tank
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Featured image for “Insect update: Cutworm collection, insect traps”
June 5, 2013

Insect update: Cutworm collection, insect traps

Cutworm activity has been light so far this year, with a few fields sprayed across the Prairies. We do expect to hear of more
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Featured image for “Insect update: Flea beetles, cutworms, scarab beetle larvae”
May 29, 2013

Insect update: Flea beetles, cutworms, scarab beetle larvae

A few flea beetles do not warrant an insecticide application. Follow these guidelines when making a flea beetle spray decision:
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Featured image for “South winds arrive”
May 23, 2013

South winds arrive

South winds from Texas and California/Mexico have reached the Prairies, as the maps show. Winds from the south central U.S. bring aster leafhoppers (which
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Featured image for “Start scouting the week after seeding”
May 23, 2013

Start scouting the week after seeding

The week after seeding is a good time to dig up seeds and seedlings to check for rots and blights. Disease damaged seed and
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Featured image for “Some flea beetle feeding is OK”
May 23, 2013

Some flea beetle feeding is OK

Assess flea beetle damage before spraying. Some feeding is tolerated without an economic cost. The nominal economic threshold for flea beetles in canola crops
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Featured image for “Insect update: Wireworms, cutworms, south winds”
May 15, 2013

Insect update: Wireworms, cutworms, south winds

Wireworms have not become the crisis some expected after lindane was pulled from the market, but some fields do have populations at levels that
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Featured image for “Aster leafhoppers arrive later in 2013”
April 4, 2013

Aster leafhoppers arrive later in 2013

Delayed arrival of southerly winds in 2013, together with the colder start to the growing season, may lessen the risks associated with aster leafhoppers,
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