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
... tion of particles equally small . They are not mysteriously combined , nor irregularly , but each atom is taken from its place of deposit , and carried to its required location in the living plant , by laws as certain as those which ...
... tion of particles equally small . They are not mysteriously combined , nor irregularly , but each atom is taken from its place of deposit , and carried to its required location in the living plant , by laws as certain as those which ...
Seite 13
... tion , etc. We will first examine the organic part of plants , or that which is driven away during combustion or burning . This matter , though apparently lost , is only changed in form . It consists of one solid substance , carbon ( or ...
... tion , etc. We will first examine the organic part of plants , or that which is driven away during combustion or burning . This matter , though apparently lost , is only changed in form . It consists of one solid substance , carbon ( or ...
Seite 16
... tion of the sap - and that of evaporating its water . If we examine leaves with a microscope we shall find that some have as many as 170,000 openings , or What is the source of the carbon of plants ? What is carbonic acid ? What is its ...
... tion of the sap - and that of evaporating its water . If we examine leaves with a microscope we shall find that some have as many as 170,000 openings , or What is the source of the carbon of plants ? What is carbonic acid ? What is its ...
Seite 18
... tion in the atmosphere is constantly about the same . In order that we may understand this , it becomes necessary for us to consider the means by which it is formed . Carbon , by the aid of fire , is made to Explain the condition of ...
... tion in the atmosphere is constantly about the same . In order that we may understand this , it becomes necessary for us to consider the means by which it is formed . Carbon , by the aid of fire , is made to Explain the condition of ...
Seite 24
... tion in this book . NITROGEN . Nitrogen , the only remaining organic constituent of vegetable matter , is for many reasons worthy of close attention . 1. It is necessary to the growth and perfection of all cultivated plants . 2. It is ...
... tion in this book . NITROGEN . Nitrogen , the only remaining organic constituent of vegetable matter , is for many reasons worthy of close attention . 1. It is necessary to the growth and perfection of all cultivated plants . 2. It is ...
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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.