Related by context. Frequent words. (Click for all words.) 69 herbicides 69 Herbicides 67 insecticides 66 weed killers 64 pesticides 62 herbicide 61 weed killer 61 synthetic pesticides 61 synthetic fertilizers 61 Glyphosate 61 fungicides 60 insecticide 58 weedkiller 58 broadleaf weeds 57 foliar 57 pyrethroids 57 Herbicide 57 fertilizers pesticides 56 Atrazine 56 fumigants 56 mulches 56 brassicas 55 imidacloprid 55 fungicide 55 nematodes 55 pesticide 55 monocultures 55 pesticides herbicides 54 glyphosate 54 manures 54 alkaloids 54 toxic pesticides 54 woody plants 54 transgenic plants 54 beneficial insects 54 paraquat 53 chemical sprays 53 broadleaf 53 genetic modification 53 transgenic crops 53 nitrogen fertilizers 53 Pesticides 53 chemical fertilizers 53 rodenticides 53 whiteflies 53 weed seeds 53 Roundup herbicide 53 spider mites 53 Insecticides 52 insect pests 52 aphids 52 crops 52 tall fescue 52 perennial grasses 52 pest resistant 52 weeds 52 fertilizers 51 ryegrass 51 Aphids 51 chemicals 51 sprays 51 crabgrass 50 oilseed rape 50 insect resistant 50 crop rotations 50 synthetic hormones 50 Bt 50 repellents 50 malathion 50 Genetically engineered 50 pests 50 chickweed 50 atrazine 50 pesticides fertilizers 50 Sprays 50 antimicrobials 50 genetically modified seeds 50 leafy spurge 50 antibiotics 50 biotech crops 50 agrochemicals 49 genetically engineered seeds 49 organophosphates 49 overseeding 49 resistant varieties 49 genetically modified crops 49 pigweed 49 repellants 49 soybean varieties 49 Genetically modified 49 nitrogen fertilizer 49 organic fertilizers 49 fumigant 49 fertilizing 49 biofuel crops 48 Syngenta 48 dandelions 48 allergenic 48 antibiotic 48 fertilizer 48 grasses