Effects of Some Fumigants on Pine Wood Nematode, Bursaphelenchus xylophilus Infecting Wooden Packages 2. Mortality of Pine Wood Nematode by Methyl Bromide Tent Fumigation

摘要

Large-scale applied tests under tent fumigation with methyl bromide (MB) were conducted to confirm a complete mortality of pine wood nematode, Bursaphelenchus xylophilus (STEINER and BUHRER) NICKLEI infecting red pine lumber (15-20 cm thick X 15-20 cmwide X 40 cm long in size). No survivor of the nematode was observed on the samples fumigated at 48, 60 and 72 g/m~3 for 24 hours at 15°C with 51.3% (v/v) loading, respectively. The standard of MB tent fumigation at 48 g/m~3 for 24 hours at 15°C with51.3% loading in the large-scale fumigation, which was 22.3 mg/l of the residual gas concentration and 764 mg centre dot h/l of the CT product, could provide for a complete mortality of the pine wood nematode infecting wooden lumber.