GFM Network News


Date of average first fall frost.

Fall frost and the frost-free season

Temperatures at thermometer level can be warmer — or cooler — than at crop level

Due to a busy start to my school year, I need a bit more time to dig deeper into last summer’s weather numbers. So, for this article I had a choice of a couple of questions that were sent to me over the last couple of weeks. The first one had to do with why

Corn seedlings on the rebound after frost damage in a field near Ste. Rose du Lac.

Slow crop emergence may have averted worst of late-May frost damage

Reseeding claims fewer than expected after long period of frigid temperatures, says MASC

Slow crop emergence may have saved the lives of a few canola plants after a hard frost hit most of agro-Manitoba on May 26 to 27. “We maybe feared the worst, and I would say we’re pleasantly surprised to this point,” said David Van Deynze, Manitoba Agricultural Services Corporation’s (MASC) chief product officer. Between May


Frost falls on agro-Manitoba, reseeding efforts take shape

Manitoba Crop Report and Crop Weather report for June 1

Southwest Region Cooler than normal temperatures continued from the previous week. All parts of the region had temperatures drop below freezing last week, down to -5 C for several hours in some areas. There are some reports of reseeding canola, but damage is not widespread. Increasing temperatures this week will spur new growth. Daytime temperatures

Frost-damaged canola seedlings in a field near St. Francois Xavier.

Frost damage widespread, but too soon yet to plan reseeding

Temperatures stayed well below freezing province-wide for several hours overnight on May 26 and 27 

[UPDATED: May 31, 2021] Severe frost, particularly in the northwest and Interlake hammered emerging crops and forage stands between May 26 and 27, but experts are warning not to pull the plug too soon. “Frost events by nature are extremely patchy,” said Dane Froese, oilseed specialist with the province. “One part of the field may

(Thinkstock photo)

Prairie cash wheat: Bids soar after weather events

U.S. May wheat futures up on week

MarketsFarm — Cash bids for Prairie wheat jumped as wintry weather made its way across the Prairies and U.S. northern Plains during the week ending Thursday. Wheat futures in the U.S. rose due to spillover from soybeans. However, a stronger Canadian dollar tempered Prairie wheat prices. Manitoba and Saskatchewan, as well as Montana, North Dakota


A wine grower lights heaters early in the morning, to protect vineyards from frost damage outside Chablis, France, April 7, 2021.

French winemakers set candles, straw ablaze to ward off frost

Spring cold snaps are coming earlier, therefore colder

Chablis, France | Reuters – French winemakers have lit candles and burned bales of straw to try to protect their vineyards from sharp spring frosts, with the forecast of more cold nights this week raising fears of serious damage and lost production. Temperatures plunged as low as -5 C overnight in wine regions including Chablis,

CBOT December 2020 wheat with 20-, 50- and 100-day moving averages. (Barchart)

U.S. grains: Wheat soars to five-year high

Corn hits 14-month high; soybeans up slightly on Chinese buying

Chicago | Reuters — Chicago wheat futures rallied to five-year highs on Thursday, as cuts to Argentina’s wheat outlook brought into focus the potential global supply damage possible due to dryness in top wheat producing countries, trader said. Corn followed wheat, climbing to 14-month highs and soybeans ended higher as exports continue. The most-active wheat

Weather conditions during field drying, after plants are frozen, impact the colour of the harvested soybeans.

Management tips for frost-damaged soybeans

Soybeans killed at growth stages of full seed development and beginning maturity should be left out in the field to dry before harvest

An early frost has producers wondering what to do with immature frost-damaged soybeans. “Soybeans killed at growth stages of full seed development (R6) and beginning maturity (R7) should be left out in the field to dry and harvested along with mature soybeans (R8) when the beans are at the desired moisture content,” advises Ken Hellevang,


Frosty weeds and closing spray windows

Frosty weeds and closing spray windows

Variables like weed species and recent and expected frosts will weigh into management decisions

Add the weather forecast into your calculations when planning fall weed control. It’s prime weed control season for perennial weeds like Canada thistle and winter annuals and acting now can help you, come spring. “A lot of the winter annuals are starting to become problems because if we don’t do any kind of control in

When should we normally expect fall frost?

When should we normally expect fall frost?

It’ll often take temperatures lower than -2.0 C to kill off most crops

It’s a little later than usual for me to talk about fall frost, as a good portion of agricultural Manitoba has already experienced some frost, but after receiving a few emails inquiring about this topic I felt there’s still time to touch on it. The first question I am usually asked about fall frost is