By Rebecca Vittetoe & Meaghan Anderson
With all the alfalfa weevils, we’ve had quite a few questions on how do you know if a field is a threshold to take action? Or I’ve used my sweep net, what’s the threshold per sweep for alfalfa weevil?
First off, a sweep net can be a helpful tool to determine if alfalfa weevils are present in a field.
However, we don’t use a sweep net to determine if action is warranted for management. Instead, stem counts are a more accurate way to help determine if action is warranted.