Laserfiche WebLink
Custom Soil Resource Report <br /> Soil reaction is a measure of acidity or alkalinity. It is important in selecting crops <br /> and 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 <br /> influenced by the amount of carbonates in the soil. <br /> Gypsum is expressed as a percent, by weight, of hydrated calcium sulfates in the <br /> fraction of the soil less than 20 millimeters in size. Gypsum is partially soluble in <br /> water. Soils that have a high content of gypsum may collapse if the gypsum is <br /> removed by percolating water. <br /> Salinity is a measure of soluble salts in the soil at saturation. It is expressed as the <br /> electrical conductivity of the saturation extract, in millimhos per centimeter at 25 <br /> degrees C. Estimates are based on field and laboratory measurements at <br /> representative sites of nonirrigated soils.The salinity of irrigated soils is affected by <br /> the quality of the irrigation water and by the frequency of water application. Hence, <br /> the salinity of soils in individual fields can differ greatly from the value given in the <br /> table. Salinity affects the suitability of a soil for crop production,the stability of soil if <br /> used as construction material, and the potential of the soil to corrode metal and <br /> concrete. <br /> Sodium adsorption ratio(SAR)is a measure of the amount of sodium (Na)relative <br /> to calcium(Ca)and magnesium (Mg)in the water extract from saturated soil paste. <br /> It is the ratio of the Na concentration divided by the square root of one-half of the <br /> Ca+Mg concentration. Soils that have SAR values of 13 or more may be <br /> characterized by an increased dispersion of organic matter and clay particles, <br /> reduced saturated hydraulic conductivity and aeration,and a general degradation of <br /> soil structure. <br /> 32 <br /> SUMMIT BRICK AND TILE COMPANY-EDMUNDSON CLAY MINE NOVEMBER 2023 <br />