First Principles of Soil FertilityOrange Judd, 1908 - 265 páginas |
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Página 140
... mixed solid and liquid excrement . Each plot received enough of the manure to supply exactly the same amount of nitrogen , and the other elements were added in excess . The results are stated in percentage of gain over a check plot that ...
... mixed solid and liquid excrement . Each plot received enough of the manure to supply exactly the same amount of nitrogen , and the other elements were added in excess . The results are stated in percentage of gain over a check plot that ...
Página 157
... mixing of the different kinds produced on the farm , for in this way the rapid fermentation that would take place in the drier horse and sheep manure is checked by the A convenient method for removing the manure from the barn , but some ...
... mixing of the different kinds produced on the farm , for in this way the rapid fermentation that would take place in the drier horse and sheep manure is checked by the A convenient method for removing the manure from the barn , but some ...
Página 163
... mixed and more water added if necessary to keep the compost moist . A compost in great favor with greenhouse men is ... mixing the fresh manure with PRESERVATION OF MANURE 163.
... mixed and more water added if necessary to keep the compost moist . A compost in great favor with greenhouse men is ... mixing the fresh manure with PRESERVATION OF MANURE 163.
Página 164
Alfred Vivian. This can be done by mixing the fresh manure with a small quantity of freshly slaked lime . In this way the manure is made to decay very rapidly , but as the de- composition is probably attended by more loss of nitro- gen ...
Alfred Vivian. This can be done by mixing the fresh manure with a small quantity of freshly slaked lime . In this way the manure is made to decay very rapidly , but as the de- composition is probably attended by more loss of nitro- gen ...
Página 179
... the first farm nothing but grain was raised , and all sold from the farm . The second was about equally divided between grain and stock farming , and the third All Grain Farming Mixed Farming 1100 Stock Farming 50 60 BARNYARD MANURE 179.
... the first farm nothing but grain was raised , and all sold from the farm . The second was about equally divided between grain and stock farming , and the third All Grain Farming Mixed Farming 1100 Stock Farming 50 60 BARNYARD MANURE 179.
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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
Pasajes populares
Página 225 - Furthermore, the mineral elements are relatively cheap, while the nitrogen is relatively expensive, and the economical use of this expensive element, nitrogen, is dependent to a large degree upon the abundance of the mineral elements in the soil. It is, therefore, advocated that for all crops and for all soils that are in a good state of cultivation, a reasonable excess of phosphoric acid and potash...
Página 1 - ... woods ; All silent is the earth and sky, Except with his own lonely moods The blackbird holds a colloquy. Over the broad hill creeps a beam, Like hope that gilds a good man's brow, And now ascends the nostril-stream Of stalwart horses come to plough.
Página 245 - One will seek to know what the different forms of plant-food are, what they do, from what sources they can be obtained, and how he can use them to best advantage. He will become to some extent an investigator, and will, of necessity, take a deeper interest in his work.