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Forages & Grains
Volume 64 Number 16 Date 08/15/2019 POTATO LEAFHOPPER - Alfalfa surveys in western Wisconsin indicate pressure is still moderate to high. The average this week was 1.9 adults and nymphs per sweep, with economic counts of two or more leafhoppers found in about 36% of sampled fields. PEA APHID - Populations of this forage pest remain low. Most fields sampled from August 8-15 had fewer than 0.5 per sweep, or 50 per 100 sweeps. PLANT BUG - Counts varied from 0.5-1.2 plant bugs per sweep, with an average of 0.4 per sweep. Numbers in alfalfa have not reached economic levels at any time this season, and reports suggest that populations have been similarly low in fruit and vegetable crops. -- Krista Hamilton, DATCP Entomologist 
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