Related by context. Frequent words. (Click for all words.) 55 berry bushes 55 shelterbelts 55 dune grass 55 native prairie grasses 54 prairie grasses 54 forbs 53 Drip irrigation 53 pennycress 52 prairie grass 52 longleaf pines 52 perennial grasses 52 Jatropha curcas 51 Prescribed burns 51 bioenergy crops 51 loblolly pines 51 longleaf 51 biofuel crops 51 salal 51 biofuel feedstocks 50 Switchgrass 50 alfalfa fields 50 forage crops 50 fescue grass 50 oilseed crops 50 uncultivated land 50 biomass feedstock 49 inorganic fertilizers 49 sequester carbon dioxide 49 poplar trees 49 hay meadows 49 grasses 49 pine seedlings 49 forested 49 lodgepole 49 Norway maples 49 fescues 49 corn stover 48 forests 48 shade tolerant 48 adelgids 48 hardwood trees 48 biomass 48 grazing pastures 48 conifer trees 48 Cellulosic ethanol 48 sagebrush 48 mesquite trees 48 tamarack 48 piñon 48 switchgrass 48 woody biomass 48 alfalfa 48 biofuel feedstock 48 Controlled burns 48 oak hickory 48 bioenergy 48 riparian buffer 48 hemlock trees 48 wheat stubble 48 sparse vegetation 48 agroforestry 48 deforesting 48 agricultural residues 47 mixed conifer 47 acidic soils 47 Fertilizing 47 deforest 47 crop residues 47 Invasive plants 47 oak savanna 47 drought resistant 47 photosynthesize 47 cattail 47 barrens 47 flea beetles 47 jack pine 47 Coal gasification 47 citrus orchards 47 deciduous forests 47 Miscanthus 47 spruce fir 47 revegetate 46 loosestrife 46 corn stubble 46 intercropping 46 forested wetlands 46 graze livestock 46 Leyland cypress 46 broadleaf 46 longleaf pine 46 woody vegetation 46 prickly pears 46 willows 46 forage 46 acacias 46 riparian zones 46 trees 46 barley straw 46 meadows 46 harvestable 46 wood chips