fungicides, insecticides, pesticides, weed killer, trifluralin, postemergence, preemergence, diquat, malathion, carbaryl, weeds, pyrethrin, fertilizers, diuron, johnsongrass, ryegrass, broadleaf, simazine, atrazine, leafy spurge, goosegrass, miticide, defoliants, nutsedge, pigweed, metaldehyde, horseweed, nutgrass, purple loosestrife, italian ryegrass, rotenone, fumigants, downy brome, weedkiller, paraquat, triazole, chemicals, musk thistle, crabgrass, nematodes, sericea lespedeza, whitetop, velvetleaf, endophyte, crops, organophosphate, alfalfa, bollworms, hairy vetch, perennial ryegrass, powdery mildew, spraying, henbit, creeping bentgrass, kochia, defoliation, milfoil, corn borer, foxtail barley, reed canary grass, juglone, phoma, sprayer, phragmites, hydrilla, european corn borer, larvicide, lindane, repellents, rodenticide, wireworms, methyl bromide, parathion, tobacco budworm, chlorpyrifos, chickweed, tillage, larvacide, biocide, chloropicrin, acaricide, sclerotinia, dandelions, brome, pests, bindweed, melaleuca, inoculant, poison hemlock, hoary alyssum, hydrated lime, parthenium, aphids, leafminer, knotweed, spartina, downy mildew, feverfew, forbs, salvinia, tamarisk, fleabane, herbicide, insecticide, pesticide, preservatives, anesthetics, antibiotics, antiseptics, anaesthetics, chemical, antihistamines, antimicrobials, biocides, oxidants, toxicants, adjuvants, antidepressants

arsenic, as, atomic number 33, dioxin