The Elements of Agriculture: A Book for Young Farmers, with Questions Prepared for the Use of SchoolsD. Appleton, 1854 - 288 Seiten |
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Seite 6
... particle being an aggregation of thousands of constituent elements . The crop of wheat , which the farmer raises by his labor , and sells for money , is produced by a combina- tion of particles equally small . They are not mysteriously ...
... particle being an aggregation of thousands of constituent elements . The crop of wheat , which the farmer raises by his labor , and sells for money , is produced by a combina- tion of particles equally small . They are not mysteriously ...
Seite 31
... particles of sandy soils , and prevents their compacting , as they are often liable to do . 5. It is also of use in killing certain kinds of insects , and , when artificially applied , in smoothing the bark of fruit trees . The source ...
... particles of sandy soils , and prevents their compacting , as they are often liable to do . 5. It is also of use in killing certain kinds of insects , and , when artificially applied , in smoothing the bark of fruit trees . The source ...
Seite 37
... particles of silica which it contains . Window glass is silicate of potash , ren- dered insoluble by additions of arsenic and litharge . Liebig tells us that some persons discovered , between Manheim and Heidelberg in Germany , a mass ...
... particles of silica which it contains . Window glass is silicate of potash , ren- dered insoluble by additions of arsenic and litharge . Liebig tells us that some persons discovered , between Manheim and Heidelberg in Germany , a mass ...
Seite 68
... particles and causes them to crumble . The same rule holds true with regard to stiff clay soils . If they are ridged in autumn , and left with a rough surface exposed to the frosts of winter , they will become much lighter , and can ...
... particles and causes them to crumble . The same rule holds true with regard to stiff clay soils . If they are ridged in autumn , and left with a rough surface exposed to the frosts of winter , they will become much lighter , and can ...
Seite 86
... particles , they cannot be made use of ; while , if the particles are so pulverized that their constituents are exposed , they become available , because water can immediately attack to dissolve , and carry them into roots . How may ...
... particles , they cannot be made use of ; while , if the particles are so pulverized that their constituents are exposed , they become available , because water can immediately attack to dissolve , and carry them into roots . How may ...
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Häufige Begriffe und Wortgruppen
absorbent agricultural alkali ammonia amount analysis animal manures applied ashes become bones burning bushels carbonic acid causes CHAPTER character charcoal chemical chloride of lime chlorine clay compost compound condition consists constituents cultivation decay decomposed decomposition deficient deposited depth drains dung earth effect escape evaporation excrements farmer farming fertilizing gases fertilizing matter grain growth guano heap heat hydrogen important improved inches ingredients inorganic kinds land large quantities leaching lime and salt liquid manure magnesia Mapes mechanical mechanical character mineral manures mineral matter moisture mulching necessary night soil nitric acid nitrogen nure obtain organic manures organic matter oxygen particles phosphate of lime phosphoric acid plaster potash prepared muck prevent produce pulverized rains removed render roots of plants salt mixture sand silica slaked slaked lime soda soils contain soluble straw sub-soil plow substances sufficient sulphuric acid super-phosphate of lime supply surface soil tain tion under-draining valuable weeds
Beliebte Passagen
Seite 148 - It is not necessary that*-4his and the foregoing table should be learned by the scholar, but they will be found valuable for reference by the farmer. MANURES. Example 1. — Required, the number of loads necessary to manure an acre of ground, dividing each load into six heaps, and placing them at a distance of 44 yards from each other ? The answer by the table is 39f . Example 2.
Seite 235 - ... the sub-soil plow, by passing through it, opens a passage for water, and often affords a sufficient drainage. If plants will grow better on a soil six inches deep than on one of three inches, there is no reason why they should not be benefited in proportion, by disturbing the soil to the whole depth to which roots will travel—even to a depth of two feet.