Currently, we are not receiving many reports of insect problems in field crops in Ohio. People are reporting finding soybean aphids, but only at a few aphids per plant at most. Remember that the threshold is 250 aphids per plant with a rising population (it takes 700-800 per plant to cause economic damage), and these numbers are NOT being seen. As we get into August and the later part of the summer, the susceptibility of soybeans to aphids goes down. However, as in other years with low numbers aphid, we do expect the numbers of aphids to begin to rise prior to the end of the summer. These aphids then will move to buckthorn in the fall and lay eggs, and will overwinter, possibly resulting in problems in 2011.
A few people have asked about twospotted spider mites in soybean with the hot temperatures we have been experiencing.