Soil ManagementOrange Judd Company, 1914 - 311 páginas |
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Página vi
... FEEDING _ - _ - _ - _ 103-125 Amount of water needed for crops Importance of soil moisture Necessity for fertilization Close planting Multiple cropping in China and Japan 103 104 106 108 109 III 112 Clean tillage versus tilled crop ...
... FEEDING _ - _ - _ - _ 103-125 Amount of water needed for crops Importance of soil moisture Necessity for fertilization Close planting Multiple cropping in China and Japan 103 104 106 108 109 III 112 Clean tillage versus tilled crop ...
Página viii
... feeding problem Needs for soil ventilation Processes of soil ventilation Conditions for strong granulation of soil Thorough drainage Dissolved limestone Effect of too much soil water Large passageways Strong drying may improve texture ...
... feeding problem Needs for soil ventilation Processes of soil ventilation Conditions for strong granulation of soil Thorough drainage Dissolved limestone Effect of too much soil water Large passageways Strong drying may improve texture ...
Página 14
... soil air by the micro- scopic organisms dwelling and feeding in the tubercles or nodules found on the roots of the vigorous plants of most , if not all , of the large clover - pea - vetch - bean family . 14 SOIL MANAGEMENT.
... soil air by the micro- scopic organisms dwelling and feeding in the tubercles or nodules found on the roots of the vigorous plants of most , if not all , of the large clover - pea - vetch - bean family . 14 SOIL MANAGEMENT.
Página 17
... feeding ground of those microscopic forms of life which turn its nitrogen and other plant food elements into forms avail- able to crops , and these internal surfaces far enough apart to give strong and deep ven- tilation and ample space ...
... feeding ground of those microscopic forms of life which turn its nitrogen and other plant food elements into forms avail- able to crops , and these internal surfaces far enough apart to give strong and deep ven- tilation and ample space ...
Página 41
... feeding of live stock , is literally throwing money away , besides making some effort to do so . Next to the waste of fer- tility which occurs before getting the manure to the field , is that of applying it unevenly and over too small ...
... feeding of live stock , is literally throwing money away , besides making some effort to do so . Next to the waste of fer- tility which occurs before getting the manure to the field , is that of applying it unevenly and over too small ...
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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