Related by context. Frequent words. (Click for all words.) 62 mosquito populations 61 gypsy moth 60 soybean aphid 59 defoliation 59 gypsy moths 59 insect populations 58 knapweed 58 infestations 57 adelgid 57 bee populations 57 mountain pine beetles 56 beetle infestation 56 leafy spurge 56 invasive weed 56 gypsy moth caterpillars 56 deer herds 56 Infestations 55 hemlock woolly adelgid 55 oak wilt 55 emerald ash borers 54 winterkill 54 Eurasian milfoil 54 soybean aphids 54 purple loosestrife 54 grassland birds 53 ash borer 53 insect pest 53 Aerial spraying 53 whiteflies 53 Feral hogs 52 anthracnose 52 whitefly 52 insect infestations 52 infestation 52 invasive pest 52 Soybean rust 52 dieback 52 downy mildew 52 mosquito borne diseases 51 fungal disease 51 armyworms 51 Sudden Oak 51 invasive weeds 51 aphid 51 temperate regions 51 wheat plantings 51 stripe rust 51 Emerald Ash Borer 51 phragmites 51 tick borne diseases 51 pine beetles 51 hatchings 51 Phytophthora 50 insect pests 50 Asian soybean rust 50 Fungicides 50 Gypsy Moth 50 honeybee colonies 50 temperate zones 50 cattle herds 50 bark beetle 50 soybean rust 50 hemlock trees 50 aspen trees 50 woody plants 50 understory 50 noxious weed 50 bollworm 50 defoliated 50 cheatgrass 50 cutworms 50 varroa 49 noxious weeds 49 Severe drought 49 locust swarms 49 overwintering 49 Eurasian watermilfoil 49 emerald ash borer 49 lodgepole pine 49 biocontrol 49 buckthorn 49 infected mosquitoes 49 forbs 49 beetles 49 soybean acreage 49 chytrid fungus 49 hardwood forests 49 pesticide spraying 49 deer herd 49 Argentine ants 49 Mountain Pine Beetle 49 eagle nests 49 fireweed 49 grasslands 48 wolf populations 48 western Corn Belt 48 migrating waterfowl 48 Prescribed burns 48 mosquito borne illnesses 48 invasives 48 invasive species