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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... " RICHARD HENGIST HORNE . 66 When tillage begins , other arts follow . The farmers , therefore , are the founders of human civilization . " DANIEL WEBSTER . ACKNOWLEDGMENTS The author desires to acknowledge his obligation to the.
... " RICHARD HENGIST HORNE . 66 When tillage begins , other arts follow . The farmers , therefore , are the founders of human civilization . " DANIEL WEBSTER . ACKNOWLEDGMENTS The author desires to acknowledge his obligation to the.
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... farmer . The subject of Soil Fertility is so large , that each phase of it could of necessity be only briefly considered in a small book , and the writer did not pretend to make the discussion of any topic exhaustive . For this reason ...
... farmer . The subject of Soil Fertility is so large , that each phase of it could of necessity be only briefly considered in a small book , and the writer did not pretend to make the discussion of any topic exhaustive . For this reason ...
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Alfred Vivian. Running water is Nature's greatest sculptor . It carves out hills and valleys , and carries away the debris to form a soil in some other place CHAPTER I INTRODUCTORY Farming is a business , and the.
Alfred Vivian. Running water is Nature's greatest sculptor . It carves out hills and valleys , and carries away the debris to form a soil in some other place CHAPTER I INTRODUCTORY Farming is a business , and the.
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Alfred Vivian. CHAPTER I INTRODUCTORY Farming is a business , and the successful farmer must be first of all a ... farmer . " It was only necessary to sow and reap , for Nature dealt lavishly with man , and gave to him freely of the ...
Alfred Vivian. CHAPTER I INTRODUCTORY Farming is a business , and the successful farmer must be first of all a ... farmer . " It was only necessary to sow and reap , for Nature dealt lavishly with man , and gave to him freely of the ...
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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