Soybean aphids in Nebraska typically reach the economic threshold and require treatment in late July through August. Treatment during this time is usually enough to keep aphid populations from resurging before they leave fields for the season.
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.
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.
Last year in another state, 14 horses died and another 100 were sickened from hay that contained blister beetles. Usually Blister beetles are not a problem, but growers should be aware of the insect and what to scout for in their fields.
The wide range in corn and soybean planting dates in Nebraska this year may affect the distribution and behavior of pest insects both this year and next year. Be alert to a possible shift and scout regularly to identify problem fields.