Related by context. Frequent words. (Click for all words.) 61 defoliation 56 beetle infestation 56 winterkill 55 harvested acreage 55 bark beetle infestation 55 gypsy moth caterpillars 54 defoliate 53 defoliated 53 adelgid 53 perennial grasses 53 downy mildew 52 aspen trees 52 Warm temperatures 52 mountain pine beetles 52 flower buds 52 root rot 52 lodgepole 52 saturated soils 52 anthracnose 51 forbs 51 sown crops 51 lodgepole pines 51 oak wilt 51 woody plants 50 deciduous trees 50 hickories 50 Plantings 50 herbaceous plants 50 soybean plantings 50 Phytophthora 50 freeze thaw cycles 50 hemlock trees 50 dieback 50 chinch bugs 50 soybean aphid 49 bark beetles 49 aspen 49 lodgepole pine 49 understory 49 higher elevations 49 drained soils 49 fungal diseases 49 tall fescue 49 overseed 49 Prescribed burns 49 western Corn Belt 49 wheat plantings 49 Aphids 49 pine beetles 49 pine beetle infestation 49 Fungicides 49 bermudagrass 49 warmer drier 49 insect infestations 49 armyworms 49 prairie grasses 49 sprayings 49 rootworm 49 bolls 49 hemlocks 49 humidities 48 peach crop 48 Fertilizing 48 frosts 48 soybean aphids 48 knapweed 48 berry bushes 48 pine beetle 48 hatchings 48 soybean acreage 48 bark beetle 48 ponderosa pines 48 plantings 48 fungal disease 48 gypsy moths 48 vegetation 48 Colder temperatures 48 fungal spores 48 emerald ash borers 48 hardwood trees 47 overseeding 47 foliar 47 cankers 47 inoculum 47 cereal crops 47 prolonged drought 47 bollworm 47 Infestations 47 shade tolerant 47 pecan crop 47 aspens 47 sowings 47 caterpillars 47 Isolated thunderstorms 47 catastrophic wildfires 47 Severe drought 47 trees 47 regrowth 47 powdery mildew 47 longleaf pine 47 Aerial spraying