First Principles of Soil FertilityKegan Paul, Trench, Trubner, 1910 - 265 páginas |
Dentro del libro
Resultados 1-5 de 13
Página 9
... remains after expelling the water is called the dry matter of the plant . The dry matter burns on being ignited and a very small amount of mineral matter remains , which is called ash . The INTRODUCTORY 9.
... remains after expelling the water is called the dry matter of the plant . The dry matter burns on being ignited and a very small amount of mineral matter remains , which is called ash . The INTRODUCTORY 9.
Página 10
Alfred Vivian. mineral matter remains , which is called ash . The part that burned , and completely disappeared is known as organic matter . The organic matter is composed of four classes of compounds known as fat , crude fiber ...
Alfred Vivian. mineral matter remains , which is called ash . The part that burned , and completely disappeared is known as organic matter . The organic matter is composed of four classes of compounds known as fat , crude fiber ...
Página 19
... remains about constant . When wood or coal or any other substance containing carbon is burned , carbonic acid is formed and passes into the atmosphere . This gas is produced during all kinds of decay and fermentation . Animals live ...
... remains about constant . When wood or coal or any other substance containing carbon is burned , carbonic acid is formed and passes into the atmosphere . This gas is produced during all kinds of decay and fermentation . Animals live ...
Página 22
... remains in this form it is of no value to the new genera- tion of plants , for the organic matter must first be decomposed , and the nitrogen changed into the form of nitrates . Nitrification . - The soil must not be regarded as an ...
... remains in this form it is of no value to the new genera- tion of plants , for the organic matter must first be decomposed , and the nitrogen changed into the form of nitrates . Nitrification . - The soil must not be regarded as an ...
Página 31
... remains to be considered the mineral matter found in the ash , or that material which remains when the organic part of the plant is destroyed by burning and which corresponds exactly to the ashes left in the stove after burning wood ...
... remains to be considered the mineral matter found in the ash , or that material which remains when the organic part of the plant is destroyed by burning and which corresponds exactly to the ashes left in the stove after burning wood ...
Otras ediciones - Ver todas
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