Three insect forecast maps are now available at the Alberta Agriculture website.
Wheat stem sawfly and wheat midge forecasts help producers make varietal decisions, said insect management specialist Scott Meers, adding, “we’ve also released the pea leaf weevil maps early because a lot of producers are seed treating for that pest.”
Pea leaf weevils are found in a wider geographic range than previous years and there’s been a dramatic expansion in central Alberta since 2013. In red or dark-orange areas, seriously consider seed treatments for next year.
Wheat midge populations vary considerably from field to field, and a lower level is forecast for 2018. Populations of wheat stem sawfly are forecast to be low with southern Alberta at the greatest risk.