Alfalfa weevils now active throughout Iowa

A couple weeks ago, I posted an ICM News article talking about alfalfa weevils active in southern and central Iowa. Well, temperatures continue to warm up and now I would expect alfalfa weevils to be active throughout all of the state. I've created a new degree map (see below). It is recommended to start scouting alfalfa fields south of Interstate 80 at 200 degree days and fields north of Interstate 80 at 250 degree days.