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Soybeans
Volume 59 Number 15 Date 08/14/2014 SOYBEAN APHID - Surveys conducted from July 14-August 11 failed to detect economic populations in 196 sampled fields. Densities ranged from 0-93 aphids per plant and averaged only four per plant. A small proportion of the sites surveyed since early August appeared to have been treated or spot-treated for aphid control., although foliar insecticide treatment has not been required for the vast majority of the state's soybeans this year. All soybean fields should be examined next week to evaluate aphid densities. Final treatments must be applied before the R5.5 growth stage. JAPANESE BEETLE - This beetle is still common over much of the state. Defoliation levels in Dane, Juneau, Kenosha, Portage, Racine and Wood counties varied from 5-15% in the past week, which is below the 20% threshold for soybeans in the seed-filling stages. -- Krista Hamilton, DATCP Entomologist 
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