Related by context. Frequent words. (Click for all words.) 85 herbicides 77 glyphosate 75 insecticide 74 fungicide 70 fungicides 69 weed killer 67 pesticide 64 insecticides 63 pesticides 61 weed killers 59 ryegrass 57 malathion 56 fumigant 56 fertilizer 56 nitrogen fertilizer 56 rotenone 55 atrazine 54 sprayer 54 weeds 54 permethrin 53 spray 53 Bt 53 aerial spraying 53 Pesticide 53 alfalfa 53 insect pests 53 nematodes 53 Syngenta 53 fertilizers 52 Roundup Ready 52 powdery mildew 52 mulches 52 Bt corn 51 larvicide 51 spraying 51 oilseed rape 51 defoliation 51 crabgrass 51 nematode 50 synthetic fertilizers 50 aphids 50 hydrilla 49 thrips 49 beneficial insects 49 weed seeds 49 cultivar 49 Bt cotton 49 woody plants 49 genetically modified corn 49 Monsanto 49 noxious weed 49 root rot 49 weed 48 resistant varieties 48 nitrogen fertilizers 48 defoliant 48 turfgrass 48 active ingredient 48 nitrogen 48 methyl bromide 48 Fertilizer 48 mulch 47 genetically modified seeds 47 Pesticides 47 sprays 47 crops 47 antibiotic 47 milfoil 47 fescue 47 invasive weeds 47 aphid 47 weevil 47 corn gluten 47 weevils 47 soil pH 47 noxious weeds 47 clover 47 Fusarium 47 Insecticides 46 applicator 46 fungus 46 seedling 46 artemisinin 46 Bayer CropScience 46 invasives 46 methyl iodide 46 borers 46 magnesium chloride 46 chemicals 46 agrochemicals 46 poison ivy 45 insect resistant 45 grasses 45 cultivars 45 pests 45 chemical 45 agrochemical 45 Bermuda grass 45 fungal diseases 45 ornamentals 45 genetically engineered crops