Soil ManagementOrange Judd Company, 1914 - 311 páginas |
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Resultados 1-5 de 57
Página vii
... soils Plant food content Soluble plant food 165 166 169 Soil particles in relation to food solution 171 Concentrated films not readily removed 172 Threefold role of soil particles 173 Effective diameter of soil grains 174 Effective ...
... soils Plant food content Soluble plant food 165 166 169 Soil particles in relation to food solution 171 Concentrated films not readily removed 172 Threefold role of soil particles 173 Effective diameter of soil grains 174 Effective ...
Página xi
... soil , air and plant food in cubic foot of field soil ... Development of cotton plants on good and on poor soil , Facing page Chart of relative diameters of grains of sand , clay and loam soil ..... 18 40 36 Chart showing structure of ...
... soil , air and plant food in cubic foot of field soil ... Development of cotton plants on good and on poor soil , Facing page Chart of relative diameters of grains of sand , clay and loam soil ..... 18 40 36 Chart showing structure of ...
Página 17
... soil grains aside to make room for due enlargement . Upon the accompanying chart there has been represented , by drawing to proper scale , the volume of the component portions of the surface foot of a soil possessing about the medium ...
... soil grains aside to make room for due enlargement . Upon the accompanying chart there has been represented , by drawing to proper scale , the volume of the component portions of the surface foot of a soil possessing about the medium ...
Página 33
... soil - its openness , its extent of internal surface and its crumb- structure is such that it must carry in solu- ble form more than can be ... grains them- selves 33 INFLUENCE OF SOIL MANAGEMENT Methods of improving soil structure Good ...
... soil - its openness , its extent of internal surface and its crumb- structure is such that it must carry in solu- ble form more than can be ... grains them- selves 33 INFLUENCE OF SOIL MANAGEMENT Methods of improving soil structure Good ...
Página 34
... soil grains is a very im- portant factor of productive capacity . This is so because it is over this surface that the soil moisture is spread to become charged with the essential plant food elements de- rived from the soil grains ...
... soil grains is a very im- portant factor of productive capacity . This is so because it is over this surface that the soil moisture is spread to become charged with the essential plant food elements de- rived from the soil grains ...
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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