Abstract
Approximately 5% of the cotton hectarage in each of 16 counties in South Carolina was sampled in a postharvest survey of 1,219 cotton 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 H. 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 [...]
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