A Survey of South Carolina Cotton Fields for Plant-Parasitic Nematodes. S. B. MARTIN, Clemson University, Pee Dee Research and Education Center, Florence, SC 29501. J. D. MUELLER, Clemson University, Edisto Research and Education Center, Blackville, SC 29817; J. A. SAUNDERS, Agricultural Services Laboratory, Clemson University, Clemson, SC 29634; and W. I. JONES, Clemson University, Pee Dee Research and Education Center, Florence, SC 29501. Plant Dis. 78:717-719. Accepted for publication 28 March 1994. Copyright 1994 The American Phytopathological Society. DOI: 10.1094/PD-78-0717.

Approximately 5% of the cotton hectarage in each of 16 counties in South Carolina was sampled in a postharvest survey of 1,2l9cotton fields during 1989 1992. Eleven species of plant-parasitic nematodes were recovered from soil samples. Hoplolaimus columbus, Meloidogyne spp., and Rotylenchulus reniformis were recovered from 61, 25, and 12%, respectively, of samples. H. columbus and Meloidogyne spp. were found in all 16 counties, but R. reniformis was found in only 11. Populations of //. columbus were in excess of damage thresholds in 37% of fields, of Meloidogyne spp. in 7% of fields, and of R. reniformis in 3% of fields. Belonolaimus longicaudatus was recovered from fewer than 1% of sampled fields. Concomitant populations of H columbus, Meloidogyne spp., and R. reniformis were detected infrequently

Keyword(s): Columbia lance nematode, reniform nematode, root-knot nematode