Related by context. Frequent words. (Click for all words.) 63 corn stover 62 biofuels 62 crop residues 61 biofuel 61 switchgrass 60 biofuel crops 60 bioenergy 60 Cellulosic ethanol 59 cellulosic ethanol 58 bio fuels 58 crop residue 57 cellulosic 57 crops 57 oilseed crops 57 forage crops 56 perennial grasses 56 agricultural residues 56 biomass 56 corn ethanol 56 stover 55 livestock manure 55 alternative fuels 54 renewable fuels 54 ethanol 54 sweet sorghum 54 woody biomass 53 biodegradable plastics 53 cellulosic biofuels 53 wood chips 53 feedstuffs 53 corn cobs 53 biomass fuels 53 feedstocks 52 nitrogen fertilizers 52 cellulosic biomass 52 corncobs 52 corn 52 corn silage 52 jatropha 52 corn stalks 52 fossil fuels 51 prairie grasses 51 biobutanol 51 Switchgrass 51 miscanthus 50 anaerobic digesters 50 biodiesel 50 alfalfa 50 carbon sequestration 50 insect resistant 49 biochar 49 synthetic fertilizers 49 bioproducts 49 genetic modification 49 feedstock 49 bio diesel 49 crop rotations 49 genetically modified crops 49 drought resistant 49 fumigants 49 fertilizers pesticides 49 sugarcane ethanol 49 fossil fuel 49 GMO crops 49 transgenic crops 49 renewable 49 camelina 48 chemical fertilizers 48 bioengineered 48 soy biodiesel 48 corn sorghum 48 sequester carbon 48 monocultures 48 Environmental Quality Incentives 48 sugar cane 48 biotech crops 48 genetically engineered crops 48 sugar beets 48 genetically modified 48 cleaner burning 48 biorefineries 48 nitrogen fertilizer 48 cereal grains 48 transgenic plants 48 Biofuel 48 Miscanthus 47 pest resistant 47 horticultural crops 47 bio ethanol 47 prairie grass 47 distillers grains 47 mulches 47 legumes 47 environmentally benign 47 manures 47 conservation tillage 47 agroforestry 47 cereal crops 47 organic fertilizers 47 silage 47 soybeans