First Principles of Soil FertilityKegan Paul, Trench, Trubner, 1910 - 265 páginas |
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Alfred Vivian. Copyright 1909 by FH.Haskett " But the gist of the whole matter is this : That for an easy and economical method of maintaining the fertility of the soil there is nothing equal to the practice of dairy farming.
Alfred Vivian. Copyright 1909 by FH.Haskett " But the gist of the whole matter is this : That for an easy and economical method of maintaining the fertility of the soil there is nothing equal to the practice of dairy farming.
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... method of treatment has not been carried to the point of mo- notony . It is hoped that this book may find a little place in agricultural literature which is not already filled , and that it may be the means of leading a few earnest ...
... method of treatment has not been carried to the point of mo- notony . It is hoped that this book may find a little place in agricultural literature which is not already filled , and that it may be the means of leading a few earnest ...
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Alfred Vivian. power , for the sale of animal products is simply an indirect method of marketing the crops . The profit from the farm is dependent not only upon the total crop produced but also , and to perhaps a still larger degree ...
Alfred Vivian. power , for the sale of animal products is simply an indirect method of marketing the crops . The profit from the farm is dependent not only upon the total crop produced but also , and to perhaps a still larger degree ...
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... methods increase the amount of moisture available to the crop should be sufficient reason for their adoption . The reader is asked to carry this thought with him as he reads the following pages . Part of the Oxygen from the Air . - A ...
... methods increase the amount of moisture available to the crop should be sufficient reason for their adoption . The reader is asked to carry this thought with him as he reads the following pages . Part of the Oxygen from the Air . - A ...
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... method of conserving and renew- ing the nitrogen supply of the soil . This does not imply that nitrogen is more necessary to vegetation than are the other constituents , but that it is the most expensive element to be furnished by means ...
... method of conserving and renew- ing the nitrogen supply of the soil . This does not imply that nitrogen is more necessary to vegetation than are the other constituents , but that it is the most expensive element to be furnished by means ...
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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