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 15
... ammonia , etc. What is atmospheric air composed of ? In what proportions ? What is the use of nitrogen in air ? Does the atmosphere contain other matters useful to vegetation } What are they ? } 2500 CARBONIC ACID . Carbonic acid is in ...
... ammonia , etc. What is atmospheric air composed of ? In what proportions ? What is the use of nitrogen in air ? Does the atmosphere contain other matters useful to vegetation } What are they ? } 2500 CARBONIC ACID . Carbonic acid is in ...
Seite 25
... ammonia . Nitric acid is also a source from which plants may obtain nitrogen , though to the farmer of less importance than ammonia . AMMONIA . Ammonia is composed of nitrogen and hydrogen . It has a pungent smell and is familiarly ...
... ammonia . Nitric acid is also a source from which plants may obtain nitrogen , though to the farmer of less importance than ammonia . AMMONIA . Ammonia is composed of nitrogen and hydrogen . It has a pungent smell and is familiarly ...
Seite 26
... ammonia has been passed until it is saturated . This power of water has a direct application to agriculture , because the water constituting rains , dews , & c . , absorbs the ammonia which the decomposition of nitrogenous matter had ...
... ammonia has been passed until it is saturated . This power of water has a direct application to agriculture , because the water constituting rains , dews , & c . , absorbs the ammonia which the decomposition of nitrogenous matter had ...
Seite 27
... ammonia which they yield on decomposition . This subject , also the means for retaining in the soil the ammoniacal parts of fertilizing matters ,. will be fully considered in the section on manures . After ammonia has entered the plant ...
... ammonia which they yield on decomposition . This subject , also the means for retaining in the soil the ammoniacal parts of fertilizing matters ,. will be fully considered in the section on manures . After ammonia has entered the plant ...
Seite 28
... ammonia , and escape into the atmosphere . From here it may be brought to the soil by rains , and enter into the composition of a plant , from which , could its parts speak as it lies on our table , it could tell us a wonder- ful tale ...
... ammonia , and escape into the atmosphere . From here it may be brought to the soil by rains , and enter into the composition of a plant , from which , could its parts speak as it lies on our table , it could tell us a wonder- ful tale ...
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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.