Aphids cause the greatest amount of injury while they are feeding within the whorl prior to tassel emergence. Treatment may be needed if pollination is no more than half complete and more than half of the corn tassels are covered with aphids.
Measuring the amount of heat between an upper and lower threshold to which an insect has been exposed, degree-days models can provide a high level of precision in predicting western bean cutworm peak flight.
While they don't cause damage to plants when feeding, migrating army cutworm moths can be an irksome household pest. Fortunately, there are simple management methods to prevent them from entering homes and other structures.
Producers will not be allowed to apply chlorpyrifos on any food or feed products after Feb. 28, 2022, and any food items treated with chlorpyrifos products after that date are not permitted to be sold.
We continue to receive questions on management with the unprecedented number of fall armyworms experienced in Nebraska this fall. The following is a Q/A to address the specific questions we’ve received.
Fall armyworm caterpillars do most of their feeding in the last stage. If you are not watching fields on a regular basis, you may not notice damage or armyworms until they are large and doing significant damage.