Commercial Fertilizers; Soil Biology and Its Relation to Fertilization

Commercial Fertilizers; Soil Biology and Its Relation to Fertilization


This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 Excerpt: ...through oxidation from the center of the pile, particularly if straw has been used for bedding. The wet fermentation, more apt to occur with the colder manures and under conditions where compaction is practiced--as where hogs run on the manure, --is characterized by little temperature change, by but slight water evaporation, by the disintegration of the mass to a dark colored and highly offensive material in which sulphuretted hydrogen and other sulphides occur, and from which some nitrogen gas passes off as a result of denitrification, but little or no ammonia. Both processes doubtless go on in every pile, but it is easy to determine in any case which is the dominant. The losses due to the dry fermentation are inevitable and excessive. It is possible, however, so to control the wet form of fermentation by compaction, maintenance of moisture content, prevention of aerobic fermentation and the free use of preservatives as to minimize loss while the manure is thus stored. The generality of farmers, however, paying but little attention to the matter, suffer immense losses of nitrogen through its fermentation. The essential differences between a fresh and a dry fermented manure are that the latter carries to a given weight less water, more plant food and more available plant food, due solely to its concentration. A given amount of fresh manure after dry rotting carries much less plant food than it did at the outset, though what there is, is more available. There need not be (though there often is) essential difference in composition between a fresh and wet rotted manure, save in the more ready availability of the ingredients of the latter. Of course either fresh or fermented manure exposed to the weather loses soluble plant food by leaching. Composting with lime..

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Joseph Lawrence Hills
Paperback | 40 pages
189 x 246 x 2mm | 91g
Publication date
21 May 2012
Publication City/Country
Miami Fl, United States
Illustrations note
black & white illustrations