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- verb Present participle of
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Subsoiling rapidly changes hydrodynamic characteristics, in particular the soils hydraulic conductivity and makes it suitable for underdraining.
2.1. Open ditches 1982
The cost of this marsh excavation including cofferdams, underdraining, pumping, etc., was $4.60 per cu.
Concrete Construction Methods and Costs Halbert Powers Gillette
A dry soil is indispensable to good health, and if it cannot be found as dry as wished for, it may be remedied by thorough underdraining.
Judge of the Court of Common Pleas gives us a book on Farm-Drainage which tells us that in England twenty millions of dollars have been loaned by the government to be used in underdraining with tile!
Although underdraining is the most important means of increasing the depth of the soil, it is not always practicable to lay drains through garden lands.
This result has been attained by systematic underdraining and deep cultivation, nearly two hundred miles of drain tile having been laid in the past few years.
North Carolina and its Resources. North Carolina. Board of Agriculture. 1896
Page 81 its 20 or more of supposed depth, that upper foot of sand, thus made dry, will serve as underdraining (or absorbent) material for all the upper earth, and may receive and continually pass off all the surplus rain-water that may thereafter fall on the surface.
If the sand-bed below were dry, or always free from water for its upper twelve inches only, (as near c,) that upper layer of dry sand would serve as natural underdraining for all the upper earth.
Tillage, underdraining, and thorough cultivation, are the means by which we develop and render this plant-food available.
It is high, rolling land, but needed underdraining.