Soybeans were scouted in early growth stages (which were variable across the field). Sporadically across the field soybeans there were plants with darkened tissue in the crook stage that had not reached the VE growth stage while other plants in the field were at V3 and growing vigorously. Darkening of the roots were observed. Soybeans were not treated with a fungicide seed treatment and were planted into no-till wheat cover crop.
The issue was confirmed by the NC State Plant, Disease and Insect clinic to be Fusarium crown rot. There are not options to remedy this issue in this season but varietal selection and subsequent use of fungicide seed treatments at planting dates earlier than mid-May are warranted in subsequent years.