Articoli correlati a On Increasing the Depth of Soils
Sinossi
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1840 Excerpt: ... than in the other; to reach an equal quantity of nourishment, they must range, and fill, perhaps, above twenty times more space, to collect the same quantity of food. But in this fine soil, the most weak and tender roots have free passage to the utmost of their extent, and have also an easy, due, and equal pressure everywhere, as in water." And it is fortunately in our power to prove that a thorough subsoil-ploughing or trenching is a permanent improvement of the soil,--is productive of continued good results for a series of years after the operation has been performed. I have often had occasion to remark this in my own experience; and that how slowly ground which has been once disturbed acquires its original degree of solidity, every railroad contractor or builder can furnish satisfactory evidence. Neither are the good effects of this deep-soil cultivation merely dependent upon the effects of the manure being moxe deeply placed, or more widely diffused in the soil; the mere loosening and extended pulverization of any soil, is certain to render that soil more productive. It is seldom that any experiments can be carried on to any extent, which will prove this fact more conclusively than those made some years since by Mr. Withers and other planters in Norfolk, with their timber plantations, of which, nearly in his own words, the following is the detail. In the year 1811, five acres of poor black sandy land were planted in the parish of Holt. The land had been recently inclosed from the common, and was Tull on Tillage, 43. covered with heath and whins. Scotch fir, and a proper assortment of deciduous trees, were planted in large holes. The fir succeeded pretty well, but the other trees made no progress; and although, he adds, "I yearly filled up the vacancie...
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