diquat, toxaphene, carbaryl, trifluralin, dieldrin, heptachlor, chlordane, endrin, organochlorine, organophosphate, parathion, diuron, triazine, tobacco budworm, trichloroethane, aldrin, mirex, johnsongrass, metaldehyde, antimycin, herbicides, anabaena, chlortetracycline, prussic acid, leafminer, juglone, phalaris, goosegrass, carbon tetrachloride, chlorpyrifos, paraquat, atrazine, malathion, wireworm, phytophthora, toxicant, festuca, fumigants, cercospora, pesticides, benzoates, endophyte, lindane, dichlorvos, pyrethrin, downy brome, creeping bentgrass, biphenyl, cyanogenic, cotton bollworm, halophyte, phoma, pythium, saxitoxin, miticide, dimethyl, erwinia, butanone, hyoscine, benzimidazole, hoary alyssum, phenolphthalein, toxicosis, insecticide, kochia, enteric bacteria, chloropicrin, pentachlorophenol, lignocaine, preemergence, bollworm, chlorobenzene, beet armyworm, parthenium, acaricide, leafhoppers, glucoside, reed canary grass, thymol, polychlorinated, ferrous sulphate, stem canker, methylene chloride, downy mildew, sclerotia, phosphite, thiourea, bacterial toxin, sweet clover, organophosphorus, puccinia, european corn borer, potassium permanganate, geraniol, carbamate, gentian violet, calcium nitrate, dichlorodiphenyltrichloroethane, clubroot, nitrofuran, tetrachloroethylene, peroxidase

herbicide, weed killer