Soil ManagementOrange Judd Company, 1914 - 311 páginas |
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Página vi
... SOIL MOISTURE IN CROP PRO- DUCTION Water often the limiting factor of yield_ ... soil texture Water unavailable to crops Soil texture in relation to plant food .. Soil texture in relation to drouth Earth mulches to conserve soil moisture ...
... SOIL MOISTURE IN CROP PRO- DUCTION Water often the limiting factor of yield_ ... soil texture Water unavailable to crops Soil texture in relation to plant food .. Soil texture in relation to drouth Earth mulches to conserve soil moisture ...
Página vii
... soil grains 174 Effective diameter determines rate of flow of air and water 175 Effective diameter determines internal soil surface Increased soil surface makes more water unavailable 179 Colloids and salts in solution render moisture ...
... soil grains 174 Effective diameter determines rate of flow of air and water 175 Effective diameter determines internal soil surface Increased soil surface makes more water unavailable 179 Colloids and salts in solution render moisture ...
Página xi
... soil moisture on position of plant food ... 137 Chart showing relation of yield of corn to soluble salts in soil 141 Chart showing relation of yield to soluble salts in soil when fertilizers were added in different amounts .... Nearer ...
... soil moisture on position of plant food ... 137 Chart showing relation of yield of corn to soluble salts in soil 141 Chart showing relation of yield to soluble salts in soil when fertilizers were added in different amounts .... Nearer ...
Página 18
... SOIL MOISTURE VOLUME OF SOIL AIR 44.24 73.18 764.1 VOLUME OF DRY SOIL VOLUME 100.0 86.99 1728 ONE CUBIC FOOT OF SURFACE SOIL Fig . 2 Showing the relative amounts of dry soil , soil air , total plant food and plant food materials soluble ...
... SOIL MOISTURE VOLUME OF SOIL AIR 44.24 73.18 764.1 VOLUME OF DRY SOIL VOLUME 100.0 86.99 1728 ONE CUBIC FOOT OF SURFACE SOIL Fig . 2 Showing the relative amounts of dry soil , soil air , total plant food and plant food materials soluble ...
Página 25
... soil moisture , it is nevertheless fortunate that the great reservoir of plant food materials is filled with forms so difficultly soluble . Were this not so , the percolation of rain through the soil would carry away so completely the ...
... soil moisture , it is nevertheless fortunate that the great reservoir of plant food materials is filled with forms so difficultly soluble . Were this not so , the percolation of rain through the soil would carry away so completely the ...
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Términos y frases comunes
abundance agricultural amount of water available plant food become black marsh capillary action capillary rise carried cent compound grains corn cube cubic foot cultivation depth develop diameter drainage drained dry soil earth mulch effective essential plant food evaporation face feeding fertilizer finest clay soils furrows granules green manures ground growing growth humus important inches of water irrigation Japan large yields layer leaching less lime carbonate loam loss of water maintained nitrate nitric acid nitrification nitrogen organic matter peat phosphoric acid physical condition plant food elements plant food materials plant sap poor soils potash pound of dry pounds of water pounds per acre practice productive capacity rain rainfall rice root hairs root zone salts saturated sodium nitrate soil grains soil management soil moisture soil surface soluble plant food solution square miles stable manure subsoil surface four feet surface soil texture tion ture underdrainage water films wheat