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Forages & Grains
Volume 60 Number 2 Date 04/30/2015 ALFALFA WEEVIL - Adults remain scarce in alfalfa fields. Only two weevils were swept from the 41 sites sampled during the reporting period of April 23-29. Weevil counts, and egg deposition in alfalfa stems, are expected to increase next week. Larvae should begin appearing in sweep net collections by May 8. POTATO LEAFHOPPER - Migrants were collected in very low numbers on April 27 and 28 from three alfalfa fields, two in Dane County and one in Grant County. Their appearance suggests a small migration into southern Wisconsin has occurred. PEA APHID - Alfalfa surveyed in Crawford, Dane, Grant, Green, La Crosse, Monroe and Vernon counties contained low counts of 0-24 aphids per 100 sweeps. Egg hatch was observed on April 17 in Grant and Richland counties, but was not noted until April 27 in La Crosse and Monroe counties. TARNISHED PLANT BUG - Adults can be found in most alfalfa fields in the southwest area of the state. The average count in the last week was three per 100 sweeps. -- Krista Hamilton, DATCP Entomologist 
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