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Ard (plough)
Simple light plough without a mouldboard / From Wikipedia, the free encyclopedia
The ard, ard plough,[1] or scratch plough[2] is a simple light plough without a mouldboard. It is symmetrical on either side of its line of draft and is fitted with a symmetrical share that traces a shallow furrow but does not invert the soil. It began to be replaced in China by the heavy carruca turnplough in the 1st century,[3] and in most of Europe from the 7th century.
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In its simplest form it resembles a hoe, consisting of a draft-pole (either composite or a single piece) pierced with a nearly vertical, wooden, spiked head (or stock) which is dragged through the soil by draft animals and very rarely by people. The ard-head is at one end a stilt (handle) for steering and at the other a share (cutting blade) which gouges the surface ground. More sophisticated models have a composite pole, where the section attached to the head is called the draft-beam, and the share may be made of stone or iron. Some have a cross-bar for handles or two separate stilts for handles (two-handled ard). The share comes in two basic forms: a socket share slipped over the nose of the ard-head; and the tang share fitted into a groove where it is held with a clamp on the wooden head. Additionally, a slender protruding chisel (foreshare) can be fitted over the top of the mainshare.