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" Thus a sandy soil may owe its fertility to the power of the sub-soil to retain water; and an absorbent clayey soil may occasionally be prevented from being barren, in a moist climate, by the influence of a substratum of sand or gravel. "
The Library of Agricultural and Horticultural Knowledge: With an Appendix on ... - Seite 458
von Library, John Baxter - 1830 - 523 Seiten
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The Engineer's & Mechanic's Encyclopeadia ...: The Machinery ..., Band 1

Luke Hebert - 1849
...the system of improvement. Thus, a sandy soil may owe its fertility to the power of the subsoil to retain water ; and an absorbent clayey soil may occasionally...certain proportions of aluminous or calcareous earth in n finely-divided state, and a certain quantity of vegetable or animal matter. The quantity of oileareous...
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Annual Report of the Wisconsin State Horticultural Society, Band 47

Wisconsin State Horticultural Society - 1917
...improvement. Thus a sandy soil may owe its fertility to the power of the subsoil to retain moisture, and an absorbent clayey soil may occasionally be prevented...by the influence of a substratum of sand or gravel. The soils that are most productive of corn contain certain proportions of aluminous or calcareous earth...
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The Philosophical Magazine: Comprehending the Various Branches of ..., Band 23

1806
...fertility to the power of the subsoil to retain water; and an absorbent clayey soil may occasionallv be prevented from being barren, in a moist climate,...by the influence of a substratum of sand or gravel. XVIII. Of the chemical Composition of fertile Corn Soils in the Climate. Those soils that are most...
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