The Principles of Manuring; An Application of Chemistry to Agriculture
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It is evident that the richer the ration is in nitrogen, phosphoric acid and potash, the more valuable will be the manure produced by the animal. The next question to determine is what proportion of the fertilizing content of the food is re- covered in the excrement.
Let the reader imagine that a ma- 28 tured animal (a steer for instance) is confined in such a manner that all of the excrement, both liquid and solid, can be preserved, and that the ani- mal is kept on a maintenance ration.
If now... the total dry matter in the ma- terials fed is determined, and likewise that voided in the excrement, it will be found that the dry matter in the excrement is just about one-half the amount that was present in the food consumed, the greater part of the other one-half having been given off from the lungs as carbonic acid gas.
If on the other hand the food is analyzed to determine the nitrogen, phosphoric acid and potash it con- tains, and the excreta are also exam- ined, it will be found that the entire amount of these constituents is voided by the animal in the solid and liquid excrement.
What to read after The Principles of Manuring; An Application of Chemistry to Agriculture?
You can find similar books in the "Read Also" column, or choose other free books by Vivian, Alfred, 1867- [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
It is evident that the richer the ration is in nitrogen, phosphoric acid and potash, the more valuable will be the manure produced by the animal. The next question to determine is what proportion of the fertilizing content of the food is re- covered in the excrement.
Let the reader imagine that a ma- 28 tured animal (a steer for instance) is confined in such a manner that all of the excrement, both liquid and solid, can be preserved, and that the ani- mal is kept on a maintenance ration.
If now... the total dry matter in the ma- terials fed is determined, and likewise that voided in the excrement, it will be found that the dry matter in the excrement is just about one-half the amount that was present in the food consumed, the greater part of the other one-half having been given off from the lungs as carbonic acid gas.
If on the other hand the food is analyzed to determine the nitrogen, phosphoric acid and potash it con- tains, and the excreta are also exam- ined, it will be found that the entire amount of these constituents is voided by the animal in the solid and liquid excrement.
What to read after The Principles of Manuring; An Application of Chemistry to Agriculture?
You can find similar books in the "Read Also" column, or choose other free books by Vivian, Alfred, 1867- [from Old Catalog] to read onlineMoreLess
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