Fields in a concentrated area of soybean production in South Carolina
were chosen for soil sampling to determine the distribution of plant-p
arasitic nematodes. Five hundred sampling sites were distributed over
19 counties according to county soybean acreage. Helicotylenchus and S
cutellonema were identified most frequently from soil samples; togethe
r, these genera occurred in over 70% of the samples. Pratylenchus and
Paratrichodorus were each observed in more than 60% of fields. Meloido
gyne spp. were found in 27% of the fields and Hoplolaimus columbus in
14%. Rotylenchulus reniformis and Belonolaimus sp. each occurred in le
ss than 10% of the fields. Tylenchorhynchus and Mesocriconema (Cricone
mella) were each present in over 40% of the fields, but numbers from e
ach field were low. Of the fields sampled, 14% contained Heterodera gl
ycines. Of these, 47% were race 14 and 32% were race 3. Races 9, 6, an
d 10 were also observed.