Related by context. Frequent words. (Click for all words.) 60 soils 58 alkaline soils 58 soil salinity 57 sparse vegetation 57 acidic soils 56 alkaline soil 55 sandy soils 55 riparian vegetation 55 riparian zones 53 forbs 53 woody stems 53 clay soils 53 woody vegetation 53 population densities 53 tussocks 53 Soil moisture 53 drained soils 53 forage 52 acidic soil 52 fruiting bodies 52 coarse sand 52 arid climates 52 deciduous forests 52 irrigations 51 unfertilized 51 steeper slopes 51 sandy loam 51 sphagnum moss 51 shelterbelts 51 evenly moist 51 herbaceous plants 51 winter hardiness 51 compacted soil 50 saturated soils 50 sandy soil 50 irrigated crops 50 Soil erosion 50 overgrazed 50 hay meadows 50 dryland wheat 50 cordgrass 50 inoculum 50 lakeshores 50 aspen stands 50 beaver ponds 49 fertile soils 49 vegetation 49 groundwater aquifers 49 nutrient uptake 49 grassland habitat 49 crop rotations 49 inorganic fertilizers 49 salination 49 micro climates 49 wheat stubble 49 streambeds 49 Drip irrigation 49 drylands 49 hardpan 49 composted manure 49 fescues 49 herbaceous perennials 49 aquatic invertebrates 49 mucilage 49 corm 49 wetland ecosystems 49 rainfed 48 soil fertility 48 Fertilizing 48 moist soil 48 soil compaction 48 tall fescue 48 bolls 48 grasses 48 Grain sorghum 48 mycelium 48 irrigated 48 desiccation 48 crops 48 freeze thaw cycles 48 pasturelands 48 crop residues 48 conventional tillage 48 bermudagrass 48 Potted plants 48 Grass clippings 48 cattail 47 digestibility 47 disking 47 grazing pastures 47 acidify 47 bottomlands 47 fescue grass 47 silking 47 vetch 47 forage crops 47 arid lands 47 croplands 47 pastureland 47 Durum wheat 47 harvested acreage