Related by context. Frequent words. (Click for all words.) 60 nitrous oxide emissions 58 nutrient runoff 57 bioenergy crops 56 soil compaction 56 tillage 56 crop rotations 55 corn silage 55 digestibility 55 forage crops 55 nutrient loading 54 seed germination 54 soils 54 nitrification 54 haylage 54 soil fertility 54 manures 54 rotational grazing 54 acidify 54 livestock manure 54 conventional tillage 53 foliar 53 tall fescue 53 conservation tillage 53 nutrient uptake 53 nitrogen 52 fertilising 52 stover 52 phytate 52 evapotranspiration 51 nutrient 51 distiller grains 51 perennial ryegrass 51 agronomic practices 51 bermudagrass 51 arable crops 51 crop residues 51 silage 51 sequester carbon 51 riparian vegetation 50 salinity 50 hydrologic cycle 50 kg ha 50 crop residue 50 harvested acreage 50 riparian zones 50 betaine 50 inoculum 50 irrigated crops 50 dieldrin 50 soil pH 50 nitrogen fixation 50 buffer strips 50 crop yields 49 lucerne 49 saturated soils 49 postharvest 49 ThermoPotash 49 potent greenhouse gas 49 nitrogen fertilizers 49 salination 49 atmospheric nitrogen 49 feedstuffs 49 carbon sequestration 49 sorption 49 wheat stubble 49 blackgrass 49 triticale 49 nitrogen fixing 49 transgenic plants 48 acidifying 48 intensively farmed 48 disking 48 perennial grasses 48 Fertilizing 48 nitrogen phosphorous 48 overgrazed 48 effluent discharge 48 Bt toxin 48 topdressing 48 solubles 48 nitrate 48 glyphosate resistant 48 biochar 48 distiller grain 48 Drip irrigation 48 liquid manure 48 vetch 48 alkalinity 48 grazing 48 manure 48 forage 48 fallowing 48 mycotoxin 48 infectious prions 48 soil moisture 48 ryegrass 48 biofuel feedstocks 47 nutrient deficiencies 47 purine 47 grassland 47 dryland