The Lance Nematode, Hoplolaimus magnistylus, on Cotton in Arkansas

The population density of Hoplolaimus magnistylus, a lance nematode, in cotton was determined at planting, mid-season, and harvest during the 1995 and 1996 growing seasons for a Poinsett County, Arkansas field. Nematode populations increased from planting to harvest in 1995 but declined in 1996. Application of aldicarb at planting at rates of 0.59 or 0.84 kg a.i./ha did not influence either nematode population density or cotton yield. This study indicates that H. magnistylus is not a serious pest of irrigated cotton in Arkansas.