Reniform and root-knot nematodes continue to cause major damage to Louisiana cotton.
Reniform nematodes are the most important parasitic pest in the state.
Lance nematodes also account for serious damage each year, but they have not yet caused loss levels as high as those attributed to reniform nematodes. Population densities of lance nematodes increased in two parishes and decreased in seven parishes. See current distribution and density table included in 1998 Research Activity . Populations of most of these species were below threshold levels. Soil sampling should begin that month and continue through December.