Related by context. Frequent words. (Click for all words.) 66 monocultures 62 weedkillers 59 inorganic fertilizers 59 herbicide resistant crops 57 soil salinity 56 Drip irrigation 56 intercropping 56 thinnings 55 synthetic fertilizers 55 Genetic modification 55 monoculture 55 herbicide resistant weeds 55 acidic soils 54 mealy bugs 54 Methyl bromide 54 superweeds 53 herbicides pesticides 53 disking 53 Lignin 53 Carbon sequestration 53 arid climates 53 bioenergy crops 53 herbicide glyphosate 53 biofuel crops 53 sooty mold 52 nitrogen fertilizers 52 Fertilizing 52 Invasive plants 52 pasture grasses 52 woody stems 51 Herbicides 51 transgenic corn 51 arable crops 51 forestry plantations 51 nutrient uptake 51 mycorrhizal fungi 51 agrichemicals 51 biopesticides 51 artificial fertilizers 51 agro ecological 51 agrofuels 51 pesticides fertilizers 50 postharvest 50 GMO seeds 50 biofuel feedstocks 50 alkaline soils 50 nutrient runoff 50 glyphosate resistance 50 Sweet sorghum 50 fertilizers pesticides 50 croton 50 salination 50 genetically engineered organisms 50 herbicides 49 lignocellulose 49 ecologies 49 Bacillus thuringiensis 49 crop residues 49 annatto 49 bollworms 49 Glyphosate 49 rotational grazing 49 rampant deforestation 49 deforest 49 clearcutting 49 agroforestry 49 Organic farming 49 corn borers 49 conventional tillage 49 biomass feedstocks 49 leafhoppers 49 genetically modified organism 49 woody vegetation 49 insecticide DDT 49 saltbush 49 tillering 49 genetically modified crops 48 broad leafed 48 nitrogen fixing 48 crop rotations 48 biocontrol 48 overexploitation 48 chemical fertilizers 48 cerrado 48 timber plantations 48 endophyte 48 seed germination 48 farming 48 overgrazing 48 Fungicides 48 pest insects 48 brassicas 48 biomass feedstock 48 Bt maize 48 leaf beetle 48 fescues 48 genetic modification 48 bollworm 48 pesticides 48 Soil erosion 48 clearcuts