Related by context. Frequent words. (Click for all words.) 64 irrigate crops 59 irrigated agriculture 59 irrigating 58 irrigate 57 Drip irrigation 57 irrigation 57 irrigated crops 55 underground aquifers 55 irrigated 55 irrigations 54 livestock rearing 53 aquifers 53 Potable water 53 water 53 livestock manure 52 groundwater recharge 52 artesian wells 52 groundwater 52 underground aquifer 52 sewage effluent 52 pasturelands 52 aquifer recharge 52 forage crops 52 nutrient runoff 52 evaporation ponds 51 sprinkler irrigation 51 herbicides pesticides 51 irrigated farmland 51 effluent 51 fertile soils 51 agricultural residues 51 hay meadows 51 creeks streams 50 crops 50 agricultural 50 overpumping 50 Soil erosion 50 grazing cattle 50 irrigation canals 50 contaminate groundwater 50 alfalfa fields 50 aquifer 50 greywater 49 farming 49 watersheds 49 reservoirs 49 septic tanks 49 Rainwater harvesting 49 desalinated 49 pesticides fertilizers 49 potable 49 crop residues 49 cropland 49 semi arid 49 pasturing 49 irrigation pumps 48 arid regions 48 wastewaters 48 Controlled burns 48 wellfields 48 animal dung 48 rainwater 48 shelterbelts 48 wastewater 48 desalinate 48 harvesting 48 Anhydrous ammonia 48 rotational grazing 48 fertilizers pesticides 48 drought parched 48 croplands 47 hog manure 47 evenly moist 47 cisterns 47 pasteurizing 47 cattle rearing 47 ponds 47 Fertilizing 47 potable water 47 drying 47 liquid manure 47 watering lawns 47 catchments 47 Floridan Aquifer 47 farmlands 47 groundwater basins 47 retention basins 47 irrigation ditches 47 watercourse 47 bioenergy crops 47 lakeshores 47 nutrient uptake 47 farms 47 forage 47 soils 47 polluted groundwater 47 contaminating groundwater 47 pivot irrigation 47 sandy loam 46 manure 46 desalinated water