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 12
... important division in the constituents of plants . One portion dissipates into the atmosphere , and the other remains as ashes . That part which burns away during combustion is called organic matter ; the ashes are called inor- ganic ...
... important division in the constituents of plants . One portion dissipates into the atmosphere , and the other remains as ashes . That part which burns away during combustion is called organic matter ; the ashes are called inor- ganic ...
Seite 16
... importance to vegetation than any other single sort of food . It is a gas , and is not , under natural circum- stances , perceptible to our senses . It constitutes about of the atmosphere , and is found in com- bination with many ...
... importance to vegetation than any other single sort of food . It is a gas , and is not , under natural circum- stances , perceptible to our senses . It constitutes about of the atmosphere , and is found in com- bination with many ...
Seite 25
... importance than ammonia . AMMONIA . Ammonia is composed of nitrogen and hydrogen . It has a pungent smell and is familiarly known as hartshorn . The same odor is perceptible around stables and other places where animal matter is de ...
... importance than ammonia . AMMONIA . Ammonia is composed of nitrogen and hydrogen . It has a pungent smell and is familiarly known as hartshorn . The same odor is perceptible around stables and other places where animal matter is de ...
Seite 26
... of holding . Does water absorb it ? What is spirits of hartshorn ? Why is this power of water important in agriculture ? What instance may be eited to prove this ? they do carbonic acid , through their leaves . It 26 THE PLANT .
... of holding . Does water absorb it ? What is spirits of hartshorn ? Why is this power of water important in agriculture ? What instance may be eited to prove this ? they do carbonic acid , through their leaves . It 26 THE PLANT .
Seite 27
... importance , there are few cases where artificial ap- plications are not beneficial . The value of farm - yard and other animal manures , depends chiefly on the ammonia which they yield on decomposition . This subject , also the means ...
... importance , there are few cases where artificial ap- plications are not beneficial . The value of farm - yard and other animal manures , depends chiefly on the ammonia which they yield on decomposition . This subject , also the means ...
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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.