The 2013 growing season hasn't exactly been setting records for heat so far, so some growers may be stuck trying to balance optimal temperatures with their chosen herbicide's recommended application timings.
Crop injury in some situations may be unavoidable, since both temperature and incorrect crop staging affect crop tolerance to herbicides. But not all injury contributes to yield loss, Jeanette Gaultier, a pesticide specialist with Manitoba Agriculture, Food and Rural Initiatives at Carman, writes on the Manitoba CropChatter website.
Thus, she says, depending on the circumstances you may not need to be concerned if you see symptoms in your crop, post-application.
CropChatter is a forum where farmers and public and private agronomists can share the latest information on crop management in Manitoba. Producers are invited to submit questions to the site.