Related by context. Frequent words. (Click for all words.) 56 soils 53 Switchgrass 52 sandy loam 52 Biochar 51 acidify 51 Lignin 50 ThermoPotash 50 volcanic soils 50 Soils 49 atmospheric nitrogen 49 acidic soils 49 phytoremediation 48 goethite 48 methane CH4 48 nitrogen phosphorous 48 nitrogen fixing 48 Cyanobacteria 47 californica 47 absorbs carbon dioxide 47 Purifying 47 alkaline soils 47 Residues 47 Earthworms 47 Bentonite 47 arid climates 47 Solanum 47 decaying vegetation 46 Evaporation 46 soil fertility 46 Jatropha curcas 46 Photosynthesis 46 soil salinity 46 Carbon Sequestration 46 Biomimicry 46 montane 46 micro climates 46 nitrogen fixation 46 mushroom cultivation 46 eucalyptus plantations 46 Sedum 45 microbial ecology 45 Acidic 45 drylands 45 decomposing organic 45 agroforestry 45 hydrological cycle 45 abiotic 45 biofuel feedstock 45 mycorrhizal fungi 45 Moringa 45 Oxidation 45 Mato Grosso Brazil 45 Inorganic 45 Algal 45 salt tolerant 45 tannic acid 45 agroecology 45 biochar 44 Xeriscape 44 alluvial soil 44 alkali 44 mucilage 44 sequester carbon dioxide 44 Carbon sequestration 44 recharge groundwater 44 Geochemistry 44 arid lands 44 humic acid 44 nutrient rich 44 arid regions 44 Soil 44 Cellulosic 44 Aquifers 44 brines 44 Fertilizing 44 nitrification 44 irrigated lands 44 mycelium 44 Permaculture 44 calcareous 44 hydrated lime 44 irrigated agriculture 44 nutrient uptake 44 Earthworm 44 bioenergy crops 44 Nutrients 44 sorption 43 Lichens 43 Natural Capitalism 43 shrubland 43 semi arid 43 Euphorbia 43 Sediments 43 inorganic compounds 43 lichens 43 isotope ratios 43 Rainwater Harvesting 43 hay meadows 43 isoprene 43 sandy soils 43 Zeolite