Abstract
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.
Keywords: 1,3-D; aldicarb; Arachis hypogaea; chemical control; ethoprop; F5145; fenamiphos; fumigant; Meloidogyne arenaria; methyl bromide; methyl isothiocyanate; nematicide; nonfumigant; peanut; root-knot nematode
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