Traveling throughout Kittson, Mahnomen, Marshall, Norman, Pennington, Polk, Red Lake and Roseau Counties in northwest Minnesota this week to survey soybeans, revealed various pest and disease issues. Soybean aphid. Figure 1. Soybean aphid. Courtesy of: Christina DiFonzo, Michigan State University, Bugwood.org. Soybean aphid ( Figure 1 ) population densities remain either undetectable or very low, with most plants housing fewer than 20 aphids. With so few soybean aphids present, I was also unable to find Asian lady beetles or their larvae or aphid “mummies” that had been parasitized by the Asian parasitic wasp, two of the many insects that provide biological control of the soybean aphid . Spider mites. Two-spotted spider mites were widespread throughout the lower and middle canopies at all except northernmost locations. One may notice that infested leaflets have a duller appearance than those that aren’t infested due to the dull-yellow ‘stippling’ symptoms characteristi...