Excerpt: ... be determined by multiplying the total weight of dry matter in the feed by 3. This assumes that bedding will be used in sufficient amount to absorb the urine, and that will require material containing one fourth as much dry matter as there is in the feed. When the amount of hay and grain is known, and the dry matter in all succulent feed is estimated, the total product of manure in tons can be arrived at with fair accuracy. Analysis of Manure.--As has been stated, the content of the manure must depend chiefly ...
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Excerpt: ... be determined by multiplying the total weight of dry matter in the feed by 3. This assumes that bedding will be used in sufficient amount to absorb the urine, and that will require material containing one fourth as much dry matter as there is in the feed. When the amount of hay and grain is known, and the dry matter in all succulent feed is estimated, the total product of manure in tons can be arrived at with fair accuracy. Analysis of Manure.--As has been stated, the content of the manure must depend chiefly upon the character of the feed. We are accustomed to combine feeding stuffs in differing proportions for horses, cows, pigs, and sheep. Van Slyke names the following approximate percentages of plant-food constituents in fresh excrements of farm animals, the solid and liquid being mixed: Animal Per Cent Nitrogen Per Cent Phosphoric Acid Per Cent Potash Horse 0.70 0.25 0.55 Cow 0.60 0.15 0.45 Pig 0.50 0.35 0.40 Sheep 0.95 0.35 1.00 Hen 1.00 0.80 0.40 He estimates that one ton of average mixed stable manure, inclusive of absorbents, contains approximately 10 pounds of nitrogen, 5 pounds of phosphoric acid, and 10 pounds of potash. CHAPTER XIII CARE OF STABLE MANURE Common Source of Losses.--When we bear in mind that four fifths of all the fertility removed from the land in the grains and coarse stuffs fed on the farm may be recovered from the animals and returned to the soil, we can appreciate the consideration that the care of manure should have on every farm. The careless methods that prevail in most sections of the country are an inheritance from the day when soils were new and full of fertility. These methods continue partly through a lack of confidence in the statements that the liquid portion of animal excrements, in average mixed stable manure, has nearly as great value as the solid portion. If this fact were accepted, many of the losses would be stopped. Another reason for continuance of careless methods is failure to appreciate that the...
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