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Fragment Modifier Calculator
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Use this excel spreadsheet to generate the textural fragment modifier based on percentages of fragments and parafragments. This calculator is from the National Soil Survey Handbook Part 618, Subpart B, Exhibit 618.90.
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SPAW Soil Water Characteristics
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Simulate soil water tension, conductivity, and water holding capability based on the soil texture with adjustments to account for gravel content, compaction, salinity, and organic matter.
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