Irrigation and drainage: principles and practice of their cultural phases by King Franklin Hiram 1848-1911

Author:King, Franklin Hiram, 1848-1911. [from old catalog]
Language: eng
Format: epub
Tags: Irrigation, Drainage
Publisher: New York, Macmillan
Published: 1899-03-25T05:00:00+00:00

Fig. 37. Penetration of roots of prune on peach in arid soil of California. (Hilgard.)

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Depth of Boot Penetration

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its needs in a dryer soil, it is evident that a much higher duty of water is possible, for the simple reason that none can. be lost by percolation, and much less will be lost by surface evaporation, even with deficient tillage.

We have already called attention to the probable deeper rooting of plants in soils of arid regions, where

Fig. 38. Penetration of apple root in Wisconsin, 7 years planted. Depth 9 feet. (Goflf.)

there is less distinction between the soil and subsoil, than in those of humid climates. Since writing that section, we have received Professors Hilgard and Loughridge's Bulletin 121, in which they emphasize this point by placing in evidence a photo-engraving of a prune tree on a peach root exposed in the soil to a depth of 8 feet, and represented in Fig. 37. The method they have used in exposing the root appears,

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Irrigation and Drainage

from the photograph, to have destroyed nearly all but the main trunks, unless it was true that the active

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