Related by context. Frequent words. (Click for all words.) 51 tillage 48 conservation tillage 44 Tillage 44 nitrous oxide emissions 44 soil compaction 43 sugarbeet 43 Thiesse 43 plant physiologist 43 soils 42 rotational grazing 42 forage crops 42 Kleingartner 42 Diffenbaugh 42 corn silage 42 agronomic 41 agronomic practices 41 AgriLife Research 41 Steidinger 41 soybean aphid 41 unplanted 41 crop rotations 41 nitrogen 40 soybean aphids 40 Fruin 40 perennial ryegrass 40 foliar 40 Cassman 40 ADAS 40 Knodel 40 Thomison 39 turfgrass 39 evapotranspiration 39 soil fertility 39 sugarbeets 39 Ejeta 39 Bt cotton 39 Texas Agricultural Experiment 38 Brunkhorst 38 pivot irrigation 38 Takle 38 soil moisture 38 nematodes 38 irrigated 38 Sneller 38 soybean varieties 38 agronomist 38 seed germination 38 Miscanthus 38 horticulturalists 38 cropland 38 Schnitkey 38 Agronomy 38 Entomologist 37 lucerne 37 analytical chemist 37 nutrient runoff 37 Niyogi 37 horticultural crops 37 entomology professor 37 nematode 37 nitrogen fixation 37 viticulturist 37 nitrogen fertilizers 37 nitrogen fixing 37 perennial grasses 37 ARS scientists 37 Bollgard 37 alfalfa 37 soil erosion 37 Van Rein 37 agronomy 37 rootworm 36 clover 36 Bt Cotton 36 seeder 36 Extension educator 36 crop yields 36 carbon sequestration 36 crop 36 Rothamsted Research 36 downy mildew 36 stover 36 Experiment Station 36 Hillaker 36 crops 36 soybean rust 36 paddy cultivation 36 nitrogen fertilizer 36 triticale 36 Kreil 36 #.#t/ha [002] 36 Syngenta Crop Protection 36 sentinel plots 36 soybean 36 AgCenter 36 Turfgrass 35 soybean growers 35 winterkill 35 sugar beet crop 35 Temik 35 dryland