. The chemistry of agriculture, for students and farmers. Agricultural chemistry. 246 LIME On the other hand, it frequently happens that soils derived from silicate rocks containing calcium do not become acid readily. This is because the calcium is slowly dissolved out as calcium bicarbonate and but little is wasted due to leaching. Practically all of it neutralizes acids or serves some other valuable function. There is no excess at any one time and, moreover, the total amount of calcium present is very Fig. 59.—Effect of sufficient limestone in the soil to neutralize the acidit
. The chemistry of agriculture, for students and farmers. Agricultural chemistry. 246 LIME On the other hand, it frequently happens that soils derived from silicate rocks containing calcium do not become acid readily. This is because the calcium is slowly dissolved out as calcium bicarbonate and but little is wasted due to leaching. Practically all of it neutralizes acids or serves some other valuable function. There is no excess at any one time and, moreover, the total amount of calcium present is very Fig. 59.—Effect of sufficient limestone in the soil to neutralize the acidity from ammonium sulphate. Oats. General fertilizer plats, Department of Agronomy, Pennsylvania Station. But, nevertheless, the general tendency of all soils is to lose the basic material and to produce acids from various causes. This combination of changes results in an acid or sour soil. Virgin soils may be temporarily acid, the latter being due to the accumulation of organic matter. Cultivation will cause further oxidation and destruction of these acids and also will cause increased solution of basic material and hence neutralization of the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stoddart, Charles William, 1877-. Philadelphia, New York, Lea & Febiger
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Keywords: ., bookleafnumber24, booksubjectagriculturalchemistry, bookyear1915
