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Soybeans
Volume 63 Number 7 Date 06/14/2018 SOYBEAN APHID - Counts in soybean fields sampled this week averaged less than two aphids per plant and 10 per infested plant, based upon examination of 100 plants per field. Populations will likely remain low through the end of the month, with densities increasing noticeably around early to mid-July as soybean fields reach the reproductive stages of growth. ROSE CHAFER - These tan beetles with orange-brown spiny legs are appearing on soybeans, corn, and on a wide variety of ornamental and garden plants. Rose chafer pressure is likely to be heaviest in fields on sandy soils and can be expected to continue for 3-4 more weeks. The economic threshold is 30% defoliation for soybean fields in the pre-bloom vegetative stages. Defoliation caused solely by the rose chafer is unlikely to reach this level before beetle activity subsides in July. -- Krista Hamilton, DATCP Entomologist 
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