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Tag Archives Fungicide

a diamondback moth on a green leaf
Crops, Local news

Diamondback moths near threshold for canola, root rot in soybeans reported

Manitoba Insect & Disease Update for July 5

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Thistle caterpillar has been noted in some soybean and sunflower fields. Some levels of diamondback moth larvae approaching threshold have been noted in some canola fields in the southwest. There have been additional reports of suspected Phytophthora root rot in soybean. Growers in the western part of Manitoba are considering whether or not to make a fungicide application for
Alfalfa weevil larvae.
Crops, Local news

Hail and fungicide timing, alfalfa weevil levels seen high

Manitoba Insect & Disease Update for June 14

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Recent hail events in the province have left producers wondering whether or not they should be using a fungicide at the herbicide timing. Flea beetles in canola, and cutworms continue to be the main insects of concern, although for both concern is diminishing as canola advances to stages less susceptible to feeding from flea beetles, and some cutworms larvae turn to pupae. Alfalfa
Sclerotinia risks remain high for Manitoba canola producers.
Crops, Oilseeds

Sclerotinia biggest issue for Manitoba canola growers in 2016

The annual disease survey found this perennial challenge is still the biggest issue for farmers

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Sclerotinia was the biggest issue for Manitoba canola growers last year, according to results from the 2016 disease survey. It showed that over 90 per cent of the 105 Manitoba fields surveyed had some level of sclerotinia infection. The incidence of the disease – the number of plants infected in the field – was between
Bill Brown, president and CEO of Adjuvants Plus Inc., explained his company’s new product called DONguard during the 8th Canadian Workshop on Fusarium Head Blight Nov. 22 in Ottawa. It’s a biocontrol for fusarium head blight. Brown said he hopes to have DONguard registered in Canada and the U.S. in 18 months.
Cereals, Crops

New product pits fungus against fungus

If DONguard gets into the plant first, it occupies the space fusarium would take and also consumes invading fusarium, according to the company that hopes to commercialize it

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A new weapon to battle fusarium head blight (FHB) fights fire with fire. The traditional tools have been agronomy, genetic resistance bred into new cultivars and fungicides — the latter sprayed on wheat and other cereal crops to protect them from the potentially devastating fungus disease that can cut yields and quality. But a fungus
Wet weather has resulted in some Manitoba field peas being infected with mycosphaerella blight this year, says Dennis Lange, Manitoba Agriculture’s industry development specialist for pulses.
Crops

Pea growers hit by crop disease and bad weather

Manitoba Agriculture’s Dennis Lange has some advice on disease prevention and harvesting


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Manitoba pea growers are getting a reminder of why they backed away from the crop in the first place. Field peas, once popular in the Red River Valley, declined in the area due to disease brought on by wet weather. However, plantings jumped this year due to attractive prices. The Manitoba Agricultural Services Corporation (MASC)
Manitoba gardeners need to be watching for late blight in their tomatoes and potatoes. These tomatoes have late blight and should be destroyed to protect Manitoba’s 64,500 acres of commercial potatoes.
Crops, Local news

Manitoba potato growers, gardeners need to scout for late blight

Home gardens can be a source of infection for the fungal disease that can spread to commercial potato fields

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Manitoba gardeners need to scout for late blight in their tomatoes and potatoes — not just to protect themselves, but the provinces’s 64,500 acres of commercial potato production. Late blight — the same fungal disease responsible for the Irish potato famine in the late 1840s — was detected July 16 in a potato field near
“Typically the (FHB) symptoms start to appear anywhere from 14 to 21 days after infection.” Pam de Rocquigny, Manitoba Agriculture.
Cereals, Crops

Low levels of fusarium head blight are being observed in some crops

Manitoba Agriculture cereals specialist Pam de Rocquigny has some management tips

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Fusarium head blight (FHB) symptoms were appearing in unprotected winter wheat and spring cereal variety trials last week, but at low levels. “Typically the symptoms start to appear anywhere from 14 to 21 days after infection,” Manitoba Agriculture cereals specialist Pam de Rocquigny said during the Westman CropTalk webinar July 27. “For the most part
sclerotinia infected canola stems
Crops, Oilseeds

Is there any reason not to spray?

A wet spring has canola fields full of sclerotinia pathogens as flowering begins in earnest

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This season Manitoba canola growers shouldn’t be asking if they should be spraying fungicides — they should be asking themselves if there’s any possible reason they shouldn’t. Clinton Jurke, director of agronomy for the Canola Council of Canada, says it’s been a moist spring, yield looks good in much of the province and dense canopies
Agriculture and Agri-Food Canada research shows early fungicide applications aimed at protecting wheat from leaf spot diseases doesn’t provide any benefit when infection is light and can do more harm than good.
Cereals, Crops

Early, frequent fungicide applications can be a waste

AAFC cereal pathologist Myriam Fernandez says it can also encourage 
more kernel diseases such as black point

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Farmers can be a little too ready to pull out the sprayer and apply fungicides and may be doing more harm than good. When there’s little or no leaf disease present in a field, those early applications are an expense for no benefit and could do more harm by encouraging other diseases such as black
Data suggests there is most white mould suppression and increased yield when fungicides are applied at the R1 growth stage.
Crops, Oilseeds

Soybean white mould control options limited

In contrast to canola, there are only four products registered

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While many Manitoba growers are familiar with the extensive number of fungicides available for dealing with white mould (sclerotinia) in canola, they may not realize that there are a lot fewer options to treat this disease in soybeans. Only four foliar fungicides are registered for control or suppression of white mould on soybeans: Acapela (DuPont),

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