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Custom Soil Resource Report <br />Soil Chemical Properties <br />This folder contains a collection of tabular reports that present soil chemical properties. <br />The reports (tables) include all selected map units and components for each map unit. <br />Soil chemical properties are measured or inferred from direct observations in the field <br />or laboratory. Examples of soil chemical properties include pH, cation exchange <br />capacity, calcium carbonate, gypsum, and electrical conductivity. <br />Chemical Soil Properties <br />This table shows estimates of some chemical characteristics and features that affect <br />soil behavior. These estimates are given for the layers of each soil in the survey area. <br />The estimates are based on field observations and on test data for these and similar <br />soils. <br />Depth to the upper and lower boundaries of each layer is indicated. <br />Cation - exchange capacity is the total amount of extractable cations that can be held <br />by the soil, expressed in terms of milliequivalents per 100 grams of soil at neutrality <br />(pH 7.0) or at some other stated pH value. Soils having a low cation- exchange capacity <br />hold fewer cations and may require more frequent applications of fertilizer than soils <br />having a high cation - exchange capacity. The ability to retain cations reduces the <br />hazard of ground -water pollution. <br />Effective cation - exchange capacity refers to the sum of extractable cations plus <br />aluminum expressed in terms of milliequivalents per 100 grams of soil. It is determined <br />for soils that have pH of less than 5.5. <br />Soil reaction is a measure of acidity or alkalinity. It is important in selecting crops and <br />other plants, in evaluating soil amendments for fertility and stabilization, and in <br />determining the risk of corrosion. <br />Calcium carbonate equivalent is the percent of carbonates, by weight, in the fraction <br />of the soil less than 2 millimeters in size. The availability of plant nutrients is influenced <br />by the amount of carbonates in the soil. <br />54 <br />NAP <br />NO"0'_ "- /,[ <br />-WSJ <br />_ _ <br />_ <br />- - A- "?-•'„ _ - <br />- - - - - _' _ <br />- - `fin <br />- ;.`��;�,4 <br />- 4 - � <br />,,,, a -- <br />�:�,v_-- F,•�c -_, .', :Y�i�1f_YRA� "� <br />_.�. <br />- Y <br />-:�' <br />"�; ;�' .;ry�;".q;�� <br />t x.=�; -" _ <br />gyp} <br />• <br />68 — Ustic Torriorthents, <br />moderately steep <br />Ustic torriorthents <br />85 <br />Very limited <br />Very limited <br />Slope <br />1.00 <br />Filtering capacity <br />1.00 <br />Slope <br />0.63 <br />Seepage <br />100 <br />Not rated <br />85 —Water <br />Water <br />86— Borrow Pits <br />95 <br />Not rated <br />Borrow pits <br />100 <br />Not rated <br />Not rated <br />Soil Chemical Properties <br />This folder contains a collection of tabular reports that present soil chemical properties. <br />The reports (tables) include all selected map units and components for each map unit. <br />Soil chemical properties are measured or inferred from direct observations in the field <br />or laboratory. Examples of soil chemical properties include pH, cation exchange <br />capacity, calcium carbonate, gypsum, and electrical conductivity. <br />Chemical Soil Properties <br />This table shows estimates of some chemical characteristics and features that affect <br />soil behavior. These estimates are given for the layers of each soil in the survey area. <br />The estimates are based on field observations and on test data for these and similar <br />soils. <br />Depth to the upper and lower boundaries of each layer is indicated. <br />Cation - exchange capacity is the total amount of extractable cations that can be held <br />by the soil, expressed in terms of milliequivalents per 100 grams of soil at neutrality <br />(pH 7.0) or at some other stated pH value. Soils having a low cation- exchange capacity <br />hold fewer cations and may require more frequent applications of fertilizer than soils <br />having a high cation - exchange capacity. The ability to retain cations reduces the <br />hazard of ground -water pollution. <br />Effective cation - exchange capacity refers to the sum of extractable cations plus <br />aluminum expressed in terms of milliequivalents per 100 grams of soil. It is determined <br />for soils that have pH of less than 5.5. <br />Soil reaction is a measure of acidity or alkalinity. It is important in selecting crops and <br />other plants, in evaluating soil amendments for fertility and stabilization, and in <br />determining the risk of corrosion. <br />Calcium carbonate equivalent is the percent of carbonates, by weight, in the fraction <br />of the soil less than 2 millimeters in size. The availability of plant nutrients is influenced <br />by the amount of carbonates in the soil. <br />54 <br />