Research Papers: Control of Root-Knot Nematodes on Peanuts with Planting Time and Postemergence Applications of Ethylene Dibromide and an Ethylene Dibromide-Chloropicrin Mixture


  • R. Rodriguez-Kabana
  • P. S. King
  • H. W. Penick
  • H. Ivey


Nematode Control, Methods of Application, Nematicides, Halogenated Hydrocarbons, Meloidogyne arenaria, M. hapla, Trichloronitromethane, Tear Gas, Fumigants


Field studies were conducted during 1977 and 1978 to determine the feasibility of using ethylene dibromide (Soilbrom 90(?) EC) or an ethylene dibromide-chloropicrin mixture (Terr-O-Cide(?) 72-27) as substitutes for DBCP (1,2-dibromo-3-chloropropane) for control of root-knot nematodes on the Florunner cultivar of peanut (Arachis hypogaea L.). Results from a field heavily infested with root-knot nematodes indicated that planting time applications of Soilbrom 90 EC at 9.35 L/ha were as effective as applications of DBCP at the same rate but that higher rates of Terr-O-Cide 72-27 were needed to obtain the same degree of nematode control. Maximal yield responses and best control of root-knot nematode were obtained with rates of 18.70 L/ha with either of the two ethylene dibromide formulations; rates higher than 18.70 L/ha did not produce additional benefits. When Soilbrom 90 EC was applied postemergence at rates of 9.35-37.41 L/ha at the mid-bloom stage of growth, no phytotoxicity was dete