. The chemistry of soils and fertilizers. Soils; Fertilizers. INFLUENCE OF CULTIVATION 39 crop production on heavy clays. Sandy and loamy soils have a high degree of permeability, and it is not necessary that it should be increased. 35. Fertilizers. — When water contains dissolved salts, it is more susceptible to the influence of surface- tension, and is more readily brought to the surface of the soil. In commercial fertilizers soluble salts are present. The beneficial effects of commercial fertili-. Fig. 15. Sandy soil without manure. zers upon the moisture content of soils are liable to be o
. The chemistry of soils and fertilizers. Soils; Fertilizers. INFLUENCE OF CULTIVATION 39 crop production on heavy clays. Sandy and loamy soils have a high degree of permeability, and it is not necessary that it should be increased. 35. Fertilizers. — When water contains dissolved salts, it is more susceptible to the influence of surface- tension, and is more readily brought to the surface of the soil. In commercial fertilizers soluble salts are present. The beneficial effects of commercial fertili-. Fig. 15. Sandy soil without manure. zers upon the moisture content of soils are liable to be overestimated, because the fertilizer undergoes fix- ation when applied, and does not remain in a soluble condition. Fertilizers containing soluble salts exercise a favorable influence upon the moisture content of soils, but the extent of this influence has never been determined under field conditions. 36. Farm Manures. — Well-prepared farm manures exercise a beneficial effect upon the moisture content of soils. When well-rotted manure is worked into a soil, the coarse soil particles and masses are bound 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 Snyder, Harry, 1867-1927. Easton, Pa. , The Chemical Publishing Co.
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