While the soybean aphid populations are low in most fields, University of Minnesota Extension is receiving reports of increasing numbers. In parts of central Minnesota, some fields are nearing threshold levels. Early-planted soybean areas with moderate rainfall this year may see the significant populations first. South Dakota State University Extension has identified several hotspots for soybean aphid populations. Most of the cases were below the economic threshold, but SDSU Extension stressed soybean aphid populations can increase quickly.
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