Damon Smith, Extension Field Crops Pathologist, Department of Plant Pathology, University of Wisconsin-Madison
Calls, photos, and plant samples have been coming in over the last week (8/1/2014) pertaining to soybeans exhibiting abnormal growth and varying degrees of leaf mosaic (interwoven green and yellow areas). These symptoms are indicative of Alfalfa mosaic virus (AMV) on soybean.
Follow the link below to read the full article:
http://fyi.uwex.edu/fieldcroppathology/2014/08/01/alfalfa-mosaic-virus-on-soybean-in-wisconsin/