USDA;
Agricultural Research Service;
Subtropical Horticulture Research Station;
Miami;
FL;
USA;
Department of Homeland Security;
U.S. Customs and Border Protection;
Miami Cargo Clearance Center;
Miami;
FL;
USA;
Arsenic; Micronutrients; Secondary; Nutrients; Iris; Marigold; Sunflower; Switchgrass;