Forages & Grains
Volume 57 Number 18 Date 08/16/2012
POTATO LEAFHOPPER - Rainfall and cooler temperatures have reduced leafhopper activity. Numbers in the southwest and west-central counties varied from 0.2-2.6 per sweep in the past week, with an average of 1.1 per sweep. Only 4 of 19 surveyed fields had economic counts of 2.0 or more per sweep. Nymphs are appearing less frequently in sweep nets.
PEA APHID - Populations in alfalfa remain very low. Surveyed fields in Eau Claire, Jackson, La Crosse, Monroe, Richland and Vernon counties contained average counts of 1-3 per sweep. This insect has been scarce for much of the season, with the exception of a brief peak in activity in May.
--Krista Hamilton, DATCP Entomologist