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Tag Archives Agricultural pest insects

Crops, Local news

Sclerotinia seen in canola, aphid populations rise in soybean crops

Manitoba Insect & Disease Update for August 16

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Sclerotinia stem rot has been observed in scattered canola fields through the canola disease survey. In most fields levels are low, but incidence was about 50 per cent in a field in the Carman area. Blackleg symptoms are easiest to identify when stems are cut at the base. The perfect time to scout is at harvest, so bring your clippers along
Aphid mummies.
Crops, Oilseeds

Assessing whether or not to spray soybean aphids?

There’s an app for that, but farmers still need to scout and take beneficial insects that prey on soybean aphids into account

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Uncertain about applying an insecticide to control soybean aphids? There’s an app for that. It’s called the Aphid Advisor and it not only takes into account the soybean aphid population, but the population of six main insects that prey on soybean aphids. “Instead of having a fixed, economic threshold like we are used to having
SWD lays eggs which hatch into larvae and feed on the fruit.
Crops, Local news

Berry crops at risk from insect

A website has been set up to report trap counts and advise on control methods

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The Prairie Fruit Growers Association and Manitoba Agriculture Fruit Crops Program are working in collaboration on a province-wide surveillance program to detect and manage spotted winged drosophila (SWD), which can damage berry crops. A report from the program last weekend said females and males (one to two per trap) had been found in traps in
Redbacked cutworm larvae and pupae. The pest overwinters as eggs and populations can show quite variable staging. Many will now be into their later larval stage.
Crops, Local news

Fairly average year for cutworms, flea beetles

Cutworms may be taking a bite out of your canola, but with proper planning 
they won’t eat into yields


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Cutworms and flea beetles continue to affect some canola fields in the province, but experts say that while cutworm damage may be marginally lower this year than last, beetle damage may have scuttled ahead of previous years. Still, the margins are slim at best. “I think every year is a flea beetle and cutworm year,”
short soybeans - Allan Dawson
Crops, Local news

Alfalfa weevil still at high levels, root rot in soybeans reported

Manitoba Insect & Disease Update for June 28

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Alfalfa weevil continues to be reported at high levels in some alfalfa fields. Cereal leaf beetle and thrips are noticeable in some fields of small grain cereals, but at below economical levels. Initial tests of levels of parasitism of cereal leaf beetle larvae show quite high levels in the Central region, with samples from other regions soon to be tested. Thanks to
Crops, Local news

Alfalfa weevils at high levels, more stripe rust detected

Manitoba Insect & Disease Update for June 21

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Alfalfa weevil has been reported at high levels in fields in the Interlake, Southwest, and Northwest. There are some lingering cutworm issues in the northwest, although populations of cutworm in many locations are turning to pupae. Stripe rust has been detected in more locations around Manitoba. The disease is known to have overwintered in Manitoba near Austin. Reports have come in of detections
Wheat Streak Mosaic Virus on spring wheat.
Crops, Local news

Wheat streak mosaic virus found in spring wheat, fusarium maps available

Manitoba Insect & Disease Update for June 7

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Wheat Streak Mosaic Virus has been detected in the Wawanesa area (read more below) and Fusarium Head Blight (FHB) Risk Maps area also now available. Flea beetles in canola, and cutworms continue to be the main insects of concern. A hatch of the potential pest species of grasshoppers has started, but so far levels are quite low. Wheat Streak Mosaic Virus There was a
Crop Report, Local news, Weather

Seeding operations 95 per cent complete, many areas need rain

Manitoba Crop Report and Crop Weather report for June 5, 2017

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Hot dry weather conditions prevailed during the week with shower activity reported in most regions bringing very little precipitation. An isolated storm event in the South Central part of the province brought and isolated rainfall of up to 75 mm. Most areas indicate that a moderate rainfall would be beneficial to improve topsoil moisture conditions.
flea beetles
Crops, Local news

Insect numbers low, flea beetles requiring some control in canola

Manitoba Insect & Disease Update for May 31

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Insect pest concerns are currently low overall. There have been some insecticide applications for cutworms on corn and soybeans in the Central Region, and on peas and lentils in the Northwest. Some species of cutworms, such as dingy cutworm, have started to turn to pupae in some field. Cutworm staging can be quite variable depending on the dominant species
Crop Report, Local news, Weather

Seeding nearly complete at 90 per cent, Northwest areas slowed by wet conditions

Manitoba Crop Report and Crop Weather report for May 29, 2017

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Moderate to cooler than normal temperatures last week. Strong southerly winds on Wednesday caused soil blowing and drifting on soils with dry topsoil and poor crop residue. Low to moderate rainfall amounts reported in most regions with the highest precipitation in the North West where some fields are excessively wet and will require days of

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