Two years of survey work totaling over 150 soil samples from Tennessee soybean production fields indicated that soybean cyst nematode (37%) is the most prevalent economically important plant-parasitic nematode followed by root-knot nematode (3%). The fields included in this survey were fields in soybean production; however, as economics change and fields with a history of cotton or corn are rotated into soybean the frequency of fields with root-knot are expected to increase as both corn and especially cotton are good hosts for root-knot. The most economically important root-knot nematode on soybean in Tennessee is thought to be M. incognita although M. arenaria, M. enterolobii, M. javanica...