Abstract
Bulk flour, bulk middlings, bagged flour, bulk brown rice, and a variety of packaged processed cereal products in boxcars, hopper cars, and a trailer van were fumigated with a powdered formulation of aluminum phosphide (Detia Ex-B®). Dosages were as close to 33 g PH3/28.32 m3 (1000 ft3) as possible although variations in the volume of the vehicle precluded an exact dosage. All test insects, Tribolium confusum Jacquelin duVal, Silophilus oryzae (L.), and Cadra cautella (Walker), were killed except when faulty construction of the vehicle resulted in low concentrations of phosphine.
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