Related by context. Frequent words. (Click for all words.) 59 nitrogen fixing 59 Switchgrass 57 Bt toxin 57 switchgrass 55 biofuel feedstock 55 cellulosic materials 54 pennycress 54 oilseed crops 53 nutrient uptake 53 bioenergy crops 53 triticale 52 perennial grasses 52 biomass feedstocks 52 nitrogen fixation 51 Algal 51 stover 51 salt tolerant 51 nematode 51 Extension agronomist 51 biofuel feedstocks 51 Cellulosic 51 corn stover 51 Miscanthus 51 crop rotations 51 perennial ryegrass 50 forbs 50 biorefining 50 corn silage 50 transgenic corn 50 sweet sorghum 50 unfertilized 50 abiotic 50 pink bollworm 50 transgenic plants 50 herbicide tolerance 50 crop residues 50 tall fescue 50 prairie grasses 50 conventional tillage 50 upland cotton 49 intercropping 49 vetch 49 alfalfa 49 brome 49 pearl millet 49 red clover 49 Cellulosic ethanol 49 Jatropha curcas 49 bioenergy 49 hemicellulose 48 forage crops 48 grain sorghum 48 distillers dried grains 48 renewable feedstocks 48 bluestem 48 ARS scientists 48 sorghum 48 legume 48 sugarbeets 48 miscanthus 48 Irrigated 48 biodiesel feedstock 48 fermentable sugars 48 shelterbelts 48 sugarbeet 48 bollworms 48 herbicide resistant 48 self pollinating 48 soil fertility 48 agricultural residues 48 solubles 48 bermudagrass 48 phytate 48 nematodes 48 rootworm 48 corn sorghum 48 irrigated cotton 48 carbon sequestration 47 inoculum 47 agronomic practices 47 cereal grains 47 nematode worms 47 cowpea 47 Bollgard 47 bollworm 47 agroforestry 47 Biochar 47 sawfly 47 synthetic polymers 47 biomass feedstock 47 alfalfa fields 47 AgriLife Research 47 safflower 47 Ethanol Production 47 USDA ARS 47 nitrogen fertilizers 47 germplasm 47 corn rootworm 47 sandy loam 47 USDA NRCS 47 camelina