Related by context. Frequent words. (Click for all words.) 52 fertile soils 51 sandy soils 51 alkaline soil 50 drained soils 49 soils 49 arid regions 48 fertile plains 48 tropical climates 48 aridity 48 sandy soil 47 subtropical climate 47 Andean highlands 47 semiarid 46 arid lands 46 agricultural heartland 46 clay soils 46 arid 45 Severe drought 45 semi arid 45 evergreen forests 45 tropical jungles 45 nitrogen fixing 44 sandy loam 44 acidic soil 44 temperate climates 44 highlands 44 calcareous 43 lowlands 43 warm climates 43 temperate forests 43 micro climates 43 arid desert 42 colonizes 42 temperate zones 42 subarctic 42 salinity 42 subtropics 42 subtropical regions 42 lowland forests 42 nutrient uptake 41 mycelium 41 Phytophthora 41 Salinity 41 Parched 41 salt tolerant 41 savannahs 41 climatic conditions 40 plains 40 rangelands 40 climatically 40 oilseed crops 40 microclimate 40 Switchgrass 40 perennial ryegrass 40 moist soil 40 microclimates 40 Irrigated 40 escarpments 39 alluvial deposits 39 frequent droughts 39 whitefly 39 loamy 39 prolonged droughts 39 La Nina pattern 39 irrigated crops 39 herbaceous plants 39 limestone cave 39 Sonoran desert 39 fertile soil 39 tall fescue 39 Soils 39 Nematodes 39 temperate climate 39 extremophiles 39 vetch 38 succulents 38 perennial grasses 38 subtropical 38 forbs 38 rainfed 38 colder winters 38 basalts 38 sphagnum moss 38 Rhododendrons 38 grape varietals 38 moss 38 irrigated agriculture 38 temperate regions 38 Soil moisture 37 sagebrush 37 overwinter 37 Chihuahuan Desert 37 Cyanobacteria 37 underground aquifers 37 alluvium 37 drought resistant 37 pampas 37 rootstocks 37 bermudagrass 37 fertile valleys 37 drought tolerant