First Principles of Soil FertilityKegan Paul, Trench, Trubner, 1910 - 265 páginas |
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Página 114
... liquid excrement ) from the more common farm animals . By reference to this table it is seen that the difference in the value of the manures as given is due , to a large extent , to the variation in the amount of water present in the ...
... liquid excrement ) from the more common farm animals . By reference to this table it is seen that the difference in the value of the manures as given is due , to a large extent , to the variation in the amount of water present in the ...
Página 118
... liquid and solid , can be preserved , and that the animal is kept on a maintenance ration . If now the total dry matter in the materials fed is determined , and likewise that voided in the excrement , it will be found that the dry ...
... liquid and solid , can be preserved , and that the animal is kept on a maintenance ration . If now the total dry matter in the materials fed is determined , and likewise that voided in the excrement , it will be found that the dry ...
Página 121
... liquid excrement . This takes into consideration the amount removed in the milk , that retained by the young ani- mals during their growing period , and , consequently , the fertility removed from the farm by the sale of the animals ...
... liquid excrement . This takes into consideration the amount removed in the milk , that retained by the young ani- mals during their growing period , and , consequently , the fertility removed from the farm by the sale of the animals ...
Página 123
... liquid excrement . Calculating the Amount of Manure From the Ra- tion . It is often of great interest and importance to the farmer to be able to calculate approximately the amount of manure that will be produced from the materials ...
... liquid excrement . Calculating the Amount of Manure From the Ra- tion . It is often of great interest and importance to the farmer to be able to calculate approximately the amount of manure that will be produced from the materials ...
Página 124
... liquid excrement it is seen. A way in which plant food is often wasted . If the straw is not used for feed or bedding it should at least be scattered Open lot feeding as extensively practiced in the " corn. 124 FIRST PRINCIPLES OF SOIL ...
... liquid excrement it is seen. A way in which plant food is often wasted . If the straw is not used for feed or bedding it should at least be scattered Open lot feeding as extensively practiced in the " corn. 124 FIRST PRINCIPLES OF SOIL ...
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Términos y frases comunes
acid and potash acre agricultural ammonia amount of nitrogen amount of plant animals applied average bacteria barn barnyard manure bedding carbonic acid clay clover commercial fertilizers complete fertilizers composition compounds condition corn crop decay deep stall denitrification drainage dry matter elements of plant Experiment Station fact farm farmer feeding fertilizing constituents fertilizing materials fertilizing value field grain green manuring ground grown hot fermentation humus important inches increase ingredients kainite land leaching legumes leguminous lime liquid excrement loss of nitrogen lysimeters manure produced materials ments method mineral matter mixed moisture necessary nitrate of soda nitrification nitrifying bacteria nitro nitrogen nure obtained organic matter oxygen phoric acid phos phosphate phosphoric acid plant food plant growth plots plowed pounds practically present rains ration removed rock roots rotation shown soil soil contains soluble substances sufficient sulphate superphosphate supply surface tillage tion urine wheat yield