Early spring can imply dangerous temperatures, particularly for earlier seeded crops; and if canola has emerged already, there’s a threat of frost.
In case your discipline has had a contact of frost, the primary piece of recommendation from Autumn Barnes, agronomy specialist with the Canola Council of Canada (CCC), is to pump the brakes.
“There were some areas that hit -3 °C, -4 °C, which can damage canola seedlings, but it’s going to take a while to be able to truly assess that damage,” says Barnes. If there are some fields that acquired hit laborious, she suggests to watch particular areas for seedling dying by flagging them with flags or washers.
Frost may cause a number of the leaf tissue to desiccate, or dry off, and the stem will look pinched, says Barnes. Typically, the plant will push out new development, so keep away from being hasty in making a re-seed resolution. (Story continues under video)
So far as a threshold for making a re-seed resolution, Barnes says one to two crops per sq. foot will nonetheless get that crop to harvest. There’s no laborious and quick quantity for when a re-seed resolution is warranted, as a result of the plant stand density will probably be completely different from area to area, nevertheless it’s nonetheless an excellent piece of information to document, and perceive, come harvest.
After 5 to 10 days, the crop situation usually received’t worsen (barring one other frost occasion), and a choice will be made after that timeframe. Typically, it might take longer for the crop to get well due to the plant having little or no alive tissue, so it’s a recreation of endurance, says Barnes.
“Another important thing with frost, is put the sprayer away for awhile,” says Barnes, as a result of if there’s no actively rising tissue, the crop shouldn’t be sprayed.