Soil ManagementOrange Judd Company, 1914 - 311 páginas |
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Página 26
... layers of them 55 times their dry weight of pure wa- ter , a layer of water which would cover the surface to a depth of some 16 to 18 inches . This cube of plant food soluble in water , de- rived from one cubic foot of surface soil , a ...
... layers of them 55 times their dry weight of pure wa- ter , a layer of water which would cover the surface to a depth of some 16 to 18 inches . This cube of plant food soluble in water , de- rived from one cubic foot of surface soil , a ...
Página 52
... needs of rapid plant growth . The thickness of the layer of water left behind , held by the surfaces of the soil grains after twenty - four hours of perfect drainage , is so 52 SOIL MANAGEMENT Importance of soil surface.
... needs of rapid plant growth . The thickness of the layer of water left behind , held by the surfaces of the soil grains after twenty - four hours of perfect drainage , is so 52 SOIL MANAGEMENT Importance of soil surface.
Página 56
... layer of water is held firmly about it . Part of this water will drain away but there remains a portion which cannot be shaken off . If this layer of water is held so firmly by the marble as to be removed from the vessel with it , it ...
... layer of water is held firmly about it . Part of this water will drain away but there remains a portion which cannot be shaken off . If this layer of water is held so firmly by the marble as to be removed from the vessel with it , it ...
Página 57
Franklin Hiram King Carrie H. Baker King. this layer of water must move about in the water with the marble . Moreover ... layers simply slide one over the other , and so firmly and rigidly do these two layers adhere to their respective ...
Franklin Hiram King Carrie H. Baker King. this layer of water must move about in the water with the marble . Moreover ... layers simply slide one over the other , and so firmly and rigidly do these two layers adhere to their respective ...
Página 58
Franklin Hiram King Carrie H. Baker King. layers of the same solution , carrying the dis- solved plant food . The surfaces of the one are brought alongside the surfaces of the other , and one and the same film over- spreads both ; and ...
Franklin Hiram King Carrie H. Baker King. layers of the same solution , carrying the dis- solved plant food . The surfaces of the one are brought alongside the surfaces of the other , and one and the same film over- spreads both ; and ...
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Términos y frases comunes
abundance amount of water available plant food become black marsh capacity of fields carried cent coarse sandy soil compound grains corn crumb structure cube cubic foot cultivation deep depth develop diameter dissolved drainage dry soil earth mulch effective essential plant food evaporation face feeding fertilizers finest clay soils furrows granules green manures growing growth humus important increase internal surface irrigation large yields leaching less lime carbonate loam loss of water magnesia maintained nitrate nitric acid nitrification nitrogen organic matter phosphoric acid physical condition plant food elements plant food materials plant sap poor soils potash pounds of water pounds per acre practice productive capacity rain rainfall root hairs root zone roots of crops salts saturated soil grains soil management soil moisture soil particles soil surface soluble plant food solution square square miles stable manure surface four feet surface soil tion underdrainage water films water-soluble plant food wheat