During July 23-25 in Western Pierce County, very high numbers of adult moths have been observed and in sweeps in 3rd Crop Alfalfa fields adjacent to field corn. On the average (at noon) 2-3 per sweep were captured in the sweep net during potato leafhopper checks. There were very large numbers within 50-100 feet of corn. No egg masses were observed under leaves of the corn. Some specimens showed some abdominal swelling indicating egg laying soon to come.
Observations of adult moths in these numbers are 2-3 weeks ahead of normal here. Does this give us any indication of the risk potential similar to losses we observed in Western Wisconsin in 1996? Growers are asking.