. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. 350 SYSTEMS OF FARMING by the animals for milk production, growth, etc., and the unavoid- able losses sustained in handlmg the manure. When the manure is given the best care that can be given it under ordinary farm conditions, these losses may be estimated at forty per cent for nitrogen which is contained in the feeds fed, thirty per cent for the phosphorus, and about twenty per cent for the potassium. When the manure is left exposed to rains in an open yard even for three months, these lo
. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. 350 SYSTEMS OF FARMING by the animals for milk production, growth, etc., and the unavoid- able losses sustained in handlmg the manure. When the manure is given the best care that can be given it under ordinary farm conditions, these losses may be estimated at forty per cent for nitrogen which is contained in the feeds fed, thirty per cent for the phosphorus, and about twenty per cent for the potassium. When the manure is left exposed to rains in an open yard even for three months, these losses may run as high as fifty-six per cent for nitrogen, forty-sbc for phosphorus, and seventy-one for potassium. to. ^ q. ^â ^ Feeding Transaction . (Nitrogen - oboui 40 % of < Phosphotus-about 30 % (^potassium-about 20% -in crops soJd Fig. 224 âDiagram illustrating the sources of loss and gam of the fertilizing elements m farming In bedding no losses are to be considered except when manure is carelessly handled. It is possible for a good stock farmer to return to the soil about seventy per cent of the fertilizing elements contained in the feeds fed and in the bedding. Fertilizers may be applied directly to the soil or mixed with manure, as in case of phosphates. When feeds are purchased the manure is enriched by an amount equal to the fertilizing elements contained in the feeds minus the losses in the feeding transaction. Stmamary of Losses and Gains,âThe sources of loss and gain. 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 Weir, Wilbert Walter, 1882-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920
