VIEW ARTICLE

Response of Meloidogyne incognita, Xiphinema index, and Dorylaimus sp. to Methyl Bromide Fumigation. S. D. Van Gundy, Professor of Nematology, University of California, Riverside 92502; D. Munnecke(2), J. Bricker(3), and R. Minteer(4). (2)(3)(4)Professor of Plant Pathology, Staff Research Associate in Plant Pathology, and Staff Research Associate in Nematology, respectively, University of California, Riverside 92502. Phytopathology 62:191-192. DOI: 10.1094/Phyto-62-191.

Meloidogyne incognita in soil exposed to flowing 600 ppm methyl bromide (MeBr) became progressively less motile (Baermann funnel extraction) during 38 hr. Infectivity (tomato bioassay) remained high for 30 hr, then dropped sharply. These effects indicate a gradual “narcotization” of the nematode. Xiphinema index adult and larvae similarly exposed to MeBr retained motility for 27 and 43 hr, respectively. The reaction of Dorylaimus sp. was intermediate. No evidence of gradual narcotization of X. index or Dorylaimus sp. was obtained. None of the nematode species studied was either motile or infective after 48 hr of exposure to MeBr.