Agricultural pest insects Archives - Page 6 of 9

Be on the lookout for three early-season crop pests

MAFRD entomologist John Gavloski has advice on flea beetles,  cutworms and wireworms for Manitoba farmers

By Allan Dawson May 25, 2015

Be on the lookout for flea beetles, cutworms and wireworms, all of which can take a bite out of yields early in the growing season, says John Gavloski, entomologist with Manitoba Agriculture, Food and Rural Development (MAFRD). Canola is especially vulnerable to flea beetle damage during the cotyledon to second true-leaf stage, Gavloski said during

Crops, Local news

Summary of crop insects on Manitoba crops in 2014

Information intended to be useful for winter planning, preparations for next season

By John Gavloski Ph.D. November 20, 2014

A “Summary of Insects on Crops in Manitoba in 2014” is now posted on the MAFRD website. This report is based partially on observation by myself and my summer assistant. A large part of this information, however, is based on observations and reports from farm production advisors, agronomists, farmers, and others who contributed information over

Did you know?, International news

A destructive crop pest with many different names

The finding is expected to help with international biosecurity and control

By Plant Biosecurity Cooperative Research Centre November 13, 2014

A global research effort has finally resolved a major biosecurity issue: four of the world’s most destructive agricultural pests are actually one and the same. For 20 years, some of the world’s most damaging pest fruit flies have been almost impossible to distinguish from each other. The ability to identify pests is central to quarantine,

A lygus bug in canola. Once seeds in the lower pods start to change colour canola crops are less susceptible to lygus bug damage. photo: John Gavloski, mafrd

Crops, Oilseeds

Assessing canola’s susceptibility to lygus bug damage

The risk declines as seeds in the lower pods start to change colour

By Allan Dawson September 1, 2014

Lygus bugs are still showing up in canola fields, but if seeds on the lower pods are changing colour then spraying with an insecticide is probably uneconomic, says John Gavloski, an entomologist with Manitoba Agriculture, Food and Rural Development. “The plant can compensate well unless there’s very, very dry conditions,” he said in an interview

Soybean aphids on the back of a soybean leaf. The white spots are discarded soybean aphid skins. The economic threshold for spraying to control soybean aphids is 250 aphids per plant and rising.

Crops, Oilseeds

Soybean aphids found near Morden, but don’t panic

They've finally arrived, but the pest isn't likely to cause economic damage this season

By Allan Dawson August 15, 2014

The first soybean aphids of the season have been found near Morden but there are so few and it’s so late they are unlikely to be an economic pest this season, says Manitoba Agriculture, Food and Rural Development’s entomologist John Gavloski. “It’s happening very late so there could be some later-seeded fields that are still

Crops, News

Aphid control important in managing PVY

Newer strains of the virus have started affecting tubers as well as the foliage

By Julienne Isaacs May 7, 2014

Potato virus Y, a plant pathogenic virus, has recently come to the renewed attention of local and national researchers. Spread via aphids, the disease has long been recognized by its foliar symptoms and resulting crop losses. But the virus is changing. Recently, newer strains of PVY have begun producing tuber symptoms as well as foliar

News

Potato beetle resistance brewing in Manitoba fields

Farmers should be scouting early in the season and switching to  alternative products if they suspect resistance

By Gord Gilmour March 18, 2014

Andrew Ronald has spent a lot of time in recent months talking to Manitoba potato growers about a familiar pest problem that could soon be taking on a new prominence. The Keystone Potato Producers Association agronomist says there’s growing evidence that Colorado potato beetle — the most significant insect pest of potato crops in Manitoba

Crops

MAFRI pest and disease report for June 25

June 26, 2013

Manitoba Agriculture has posted its weekly insect and disease update for June 25. View the full report. Highlights • Flea beetle numbers are starting to decline, and cutworms are advancing into their final larval stages or starting to turn to pupae. • Grasshoppers hatch continues, check field edges and other suitable egg-laying areas to determine

Crops, Forages, Livestock

Is alfalfa weevil taking a bite out of your forage crop?

By Stuart Mcmillan June 5, 2013

Researchers are working on an interactive map to help producers assess potential for weevil infestations

Many Saskatchewan forage growers dutifully waited for alfalfa to reach the 15 per cent bloom stage before cutting last year, but their patience went unrewarded. Thanks to the alfalfa weevil, a nasty little pest that has been gradually spreading across the southern Prairies since its arrival here in the 1950s, they were waiting for a

Crops

Multi-toxin biotech crops not silver bullets

By Manitoba Co-operator Staff April 9, 2013

When pests developed resistance to Bt crops such as corn, potatoes and cotton, seed companies had an answer: two-toxin varieties. But new research suggests it may be the wrong one. Bioengineered crops with genes taken from bacterium Bacillus thuringiensis have been widely grown since 1996. The genes produce Bt toxins, reducing the need for pesticide

Daily Network News

U.S. livestock: Cattle extend gains on improving cash prices, packer demand

U.S. grains: Soy futures slide on China demand doubts

Spain probes whether swine fever outbreak was caused by lab leak

Tag Archives Agricultural pest insects