Related by context. Frequent words. (Click for all words.) 63 seed germination 62 bermudagrass 62 nitrogen fixation 61 foliar 61 Fertilizing 60 tall fescue 59 forage crops 59 ryegrass 59 perennial grasses 58 nutrient deficiencies 58 grasses 58 soil compaction 58 defoliation 58 nutrient runoff 57 nitrogen fertilizers 57 soil fertility 57 nutrient uptake 57 forbs 57 crop rotations 56 insect populations 56 harvested acreage 56 Phytophthora 56 perennial ryegrass 55 nitrogen fixing 55 forages 55 woody plants 55 fertilizing 55 drained soils 55 soil pH 55 nutrient loading 55 Fertilization 55 crop yields 54 kg ha 54 winterkill 54 soils 54 soybean aphid 54 irrigated crops 54 anthracnose 54 corn silage 54 digestibility 53 Miscanthus 53 desiccation 53 salt tolerant 53 evapotranspiration 53 tillage 53 agronomic practices 53 Drip irrigation 53 nutrient 53 transgenic plants 53 red clover 53 nutrient deficiency 53 fescue 53 fertilization 53 nitrogen 53 vetch 52 Replanting 52 inoculum 52 leaf rust 52 pigweed 52 ragweed pollen 52 herbaceous plants 52 Grasses 52 nematode 52 isoprene 52 grassland habitat 51 alfalfa 51 overseeding 51 conservation tillage 51 Bt toxin 51 soil erosion 51 Switchgrass 51 nitrogen fertilizer 51 sown crops 51 Fungicides 51 manures 51 oilseed crops 51 photosynthetic 51 seeds germinate 51 germination 51 regrowth 51 atmospheric CO 51 stripe rust 51 shade tolerant 51 nitrous oxide emissions 51 salinity 51 atmospheric CO2 51 cheatgrass 51 rotational grazing 51 dieback 51 nutrient absorption 50 fungicides 50 crop residues 50 vegetation 50 synthetic fertilizers 50 sugarbeets 50 alfalfa hay 50 bollworm 50 fruiting 50 forage 50 rainfed 50 alkaline soil