EVALUATION OF FOSTHIAZATE FOR MANAGEMENT OF MELOIDOGYNE-JAVANICA IN FLORIDA FLUE-CURED TOBACCO

One grower trial and two experiment station tests were conducted to ev aluate a new nematicide, fosthiazate, for management of Meloidogyne ja vanica in Florida flue-cured tobacco. Fosthiazate was applied broadcas t and incorporated at rates ranging from 21 to 84 g/100 m(2) and compa red with 1,3-dichloropropene at 240 and 460 ml/100 m(2) and fenamiphos at 67 g/100 m(2). All fosthiazate treatments increased tobacco yields and reduced root galling. Application of 1,3-D provided the highest t obacco yields and greatest reductions in root galling. The fenamiphos treatment outperformed all fosthiazate treatments in tobacco yield and root gall reduction. Fosthiazate may therefore have limited utility c ompared with 1,3-D and fenamiphos as a nematicide for tobacco in penin sular Florida.