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 67
... depth , or otherwise improve it . This being the case , we will in a few words explain some of the principal pul- verizing agents . 1. The action of frost . When water lodges in the crevices of rocks , and freezes , it expands , and ...
... depth , or otherwise improve it . This being the case , we will in a few words explain some of the principal pul- verizing agents . 1. The action of frost . When water lodges in the crevices of rocks , and freezes , it expands , and ...
Seite 139
... depth , to prevent the evaporation — and con- sequent loss - of their fertilizing gases . WOOLLEN RAGS , ETC. Woollen rags , hair , waste of woollen factories , etc. , contain both nitrogen and phosphate of lime ; and , like all other ...
... depth , to prevent the evaporation — and con- sequent loss - of their fertilizing gases . WOOLLEN RAGS , ETC. Woollen rags , hair , waste of woollen factories , etc. , contain both nitrogen and phosphate of lime ; and , like all other ...
Seite 164
... depth of about thirty - four inches . Hence , we see that there can be no loss in this di- rection ; and , as inorganic matter cannot evaporate from the soil , the only way in which it can escape is through the structure of plants . If ...
... depth of about thirty - four inches . Hence , we see that there can be no loss in this di- rection ; and , as inorganic matter cannot evaporate from the soil , the only way in which it can escape is through the structure of plants . If ...
Seite 200
... depth , and comes in contact with but a small quantity of the absorbents , it is not pro- bable that the fertilizing matters which it contains will all be abstracted . Some of them will undoubt- edly return to the atmosphere on the ...
... depth , and comes in contact with but a small quantity of the absorbents , it is not pro- bable that the fertilizing matters which it contains will all be abstracted . Some of them will undoubt- edly return to the atmosphere on the ...
Seite 210
... depth . 3. To darken its color , and render it capable of absorbing atmospheric fertilizers . How may it obtain heat ? What is the use of the air circulating among its particles ? Could most soils be brought to the highest state of ...
... depth . 3. To darken its color , and render it capable of absorbing atmospheric fertilizers . How may it obtain heat ? What is the use of the air circulating among its particles ? Could most soils be brought to the highest state of ...
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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.