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Bog, hæftet The Chemical News and Journal of Physical Science, 1912, Vol. 105: A Journal of Practical Chemistry in All Its Applications to Pharmacy, Arts, and Man af William Crookes

The Chemical News and Journal of Physical Science, 1912, Vol. 105: A Journal of Practical Chemistry in All Its Applications to Pharmacy, Arts, and Man

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Excerpt from The Chemical News and Journal of Physical Science, 1912, Vol. 105: A Journal of Practical Chemistry in All Its Applications to Pharmacy, Arts, and Manufactures

Some organic matter is essential to make a soil of what would otherwise be pulverised and more or less ... Læs mere

Excerpt from The Chemical News and Journal of Physical Science, 1912, Vol. 105: A Journal of Practical Chemistry in All Its Applications to Pharmacy, ... Læs mere

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Sprog:
Engelsk
ISBN-13:
9781334335655
Sideantal:
336
Udgivet:
01-11-2016
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Excerpt from The Chemical News and Journal of Physical Science, 1912, Vol. 105: A Journal of Practical Chemistry in All Its Applications to Pharmacy, Arts, and Manufactures

Some organic matter is essential to make a soil of what would otherwise be pulverised and more or less hydrolysed rock, and while there are some soils capable of growing crops that contain very small quantities of organic matter, on the whole the quantity of this material in average soils is considerable. Analyses have shown that the average organic content of the soils of the United States is 206 per cent and 0f subsoils 083 per cent (cameron, yourn. Am. Chem. Soc., 1905, xxvii., This means 28 tons of organic matter per acre in the first 8 inches of soil and 50 tons in the soil and subsoil together to the depth of 2 feet.

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