Efficacy of Fumigant and Nonfurmigant Nematicides for Control of Meloidogyne arenaria on Peanut


  • D. W. Dickson
  • T. E. Hewlett


Three tests were conducted to evaluate the efficacy of fumigant and nonfumigant nematicides for control of Meloidogyne arenaria race 1 on peanut. Methyl bromide, 1,3-D, methyl isothiocyanate, and methyl isothiocyanate mixtures were applied 7 or 8 days preplant either broadcast or in-the-row. Aldicarb, ethoprop, fenamiphos, and F5145 were applied at different rates and by different methods at-plant or at early flowering. Of the 32 treatments evaluated, only seven resulted in yield increases (P = 0.05), although early season vigor was high in all treated plots. During the latter one-third of the growing season, however, nematode control was not adequate in most treatments resulting in heavy peg, pod, and root infection by M. arenaria. Key words: 1,3-D, aldicarb, Arachis hypogaea, chemical control, ethoprop, F5145, fenamiphos, fumigant, Meloidogyne arenaria, methyl bromide, methyl isothiocyanate, nematicide, nonfumigant, peanut, root-knot nematode.