Root-knot and Reniform Nematode Suppression with Selected Nematicides in Arkansas

Nematode severity in Arkansas in 1999, although not as great as in 1998, proved to be increasing throughout the state. Root-knot nematode (RKN), Meloidogyne incognita, and reniform nematode, Rotylenchulus reniformis, were diagnosed in many grower fields for the first time in 1999. Cotton yields were reduced through much of the state due to environmental stress and nematodes made a bad situation worse for many growers. Also, one of the most severe thrips infestations occurred on cotton in 1999 compared to previous years. The objectives of these studies were to evaluate various rates and timings of selected nematicides for suppression of RKN and reniform nematode in typical grower fields and to evaluate the efficacy of these compounds for control of thrips.