First Sentence:
World per capita grain production increased from 247 kg in 1950 to 342 kg in 1984 and has progressively decreased to 320 kg in 1996 (Figure 1.1a) (Brown et al., 1997).
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Key Phrases - Statistically Improbable Phrases (SIPs):
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rangeland soil erosion, total dry biomass production, winter cover rye, soil chemical quality, soil physical quality, surface seal formation, assessing soil quality, least limiting water range, soil quality indicators, surface residue cover, soil biological communities, potential wind erosion, continuous corn plots, soil resilience, residue management systems, solum depth, potential soil erosion, tilled treatments, whole soil profile, soil knowledge, agronomic productivity, clay dispersion, soil chemical properties, soil mapping units, wind erosion equation
Key Phrases - Capitalized Phrases (CAPs):
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Soil Sci, Soil Water Conserv, United States, New York, National Research Council, Boca Raton, Great Plains, American Society of Agronomy, San Luis Valley, Department of Agriculture, Government Printing Office, Lewis Publishers, Effects of Long-Term Cropping, Morrow Plots, Walnut Gulch, Forest Service, Sanborn Field, South Dakota, Sustainable Environment, North America, National Academy Press, Soil Survey Staff, Plant Soil, Soil Tillage Res, South Asia
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