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Health hazard evaluation of methyl bromide soil fumigations.
Appl Occup Environ Hyg 1999 Jul; 14(7):407-412
Plant Protection and Quarantine (PPQ) officers of the U.S. Department of Agriculture's Animal and Plant Health Inspection Service apply a variety of soil fumigants and post-emergence herbicides in their attempts to eradicate witchweed from the United States. They use methyl bromide to spot fumigate small, isolated areas of soil contaminated by witchweed. Witchweed (Striga asiateca) is a parasitic annual that can severely damage corn, sorghum, sugarcane, dryland rice, and more than 60 other grass species. After its seeds germinate, witchweed penetrates the roots of host plants, robbing them of water and nutrients.(2) Though witchweed is one of the most serious crop pests hindering cereal crop production in Africa, the Middle East, and Far East, eastern parts of North Carolina and South Carolina are the only places in the Western Hemisphere where it has been found.
Plants; Plant-substances; Soil-analysis; Soil-sampling; Herbicides; Soil-conditioners
Issue of Publication
Applied Occupational and Environmental Hygiene
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division