WOOD BORER CONTROL IN SPRUCE LOGS WITH P-DICHLORO­ BENZENE AND PLASTIC SHEETING (COLEOPTERA: CERAMBYCIDAE)

摘要: Fumigation under plastic sheating of white spruce (Picea glauca (Moench) Voss) logs with crystalline p·dichlorobenzene (PDB) for 26 days killed more than 95% cerambycid and other wood borer larvae the bark in wood, at lowest dosage 8g chemical per cubic meter log plus air space volume. The long treatment-durati on promoted discoloration by stain fungi. When treatments were shortened to 2, 4 7 days', PDB was dissolved trichloroethylene , shortest duration 80% larvae.