Related by context. Frequent words. (Click for all words.) 65 alkaline soils 64 saturated soils 62 acidic soils 61 soil salinity 61 alkaline soil 60 soils 59 desiccation 59 drained soils 58 clay soils 58 periodic droughts 58 arid climates 58 salination 57 sandy soils 57 moist soil 57 tannic acid 57 Fertilizing 56 evenly moist 56 soil compaction 56 irrigations 56 atmospheric nitrogen 56 wheat stubble 56 cereal crops 56 irrigated crops 55 root rot 55 fescues 55 tall fescue 55 foliar 55 seeds germinate 55 hay meadows 55 Drip irrigation 55 woody stems 55 recharge groundwater 54 winterkill 54 freeze thaw cycles 54 sphagnum moss 54 shelterbelts 54 acidic soil 54 weed seeds 54 decaying vegetation 54 crusting 54 lowland flooding 54 mulches 54 seedbeds 54 apple scab 54 thaw cycles 54 rancidity 53 inorganic fertilizers 53 rotting vegetation 53 forage crops 53 pest infestation 53 dryland cotton 53 Grass clippings 53 thinnings 53 turfgrasses 53 salt tolerant 53 disking 53 crop residues 53 acidify 53 perennial grasses 53 sandy loam 53 moisture 53 bermudagrass 53 vetch 53 herbicides pesticides 53 sooty mold 53 Soil erosion 53 sown crops 52 fertile soils 52 ponding 52 sandy soil 52 evaporative 52 grazing pastures 52 crops 52 perennial ryegrass 52 woody vegetation 52 crop residue 52 silage 52 windrows 52 Soil moisture 52 windrow 52 compost heaps 52 dryland wheat 52 Bermudagrass 52 Nematodes 51 oxidise 51 epiphytes 51 overwatering 51 soaker hoses 51 wheat oats 51 nitrogen fertilizers 51 Herbicides 51 clogged gutters 51 herbaceous perennials 51 mucilage 51 nutrient runoff 51 silts 51 Germination 51 dense canopy 51 chinch bugs 51 Phytophthora 51 irrigated