Implements and Machines
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The oldest and most consequential farm implement: a blade dragged through the ground to break, turn and bury, converting sod and stubble into seedbed. From the simple scratch ard of the Bronze Age to the heavy mouldboard plough that opened northern Europe's clay and John Deere's steel plough that broke the prairie, its history is the history of what land could be farmed at all.
Facts
Disputed
Introduced YearArd-plough evidence appears in the Near East as early as the sixth millennium BCE; the earliest known European wooden ard, at Lavagnone in Italy, dates to around 2300 to 2000 BCE, though scratch marks consistent with early ploughing there date to 3500 to 3000 BCE. 3000 BCE is used here as the conventional circa marker, consistent with this entity's own origin-note; the precise origin point and date remain debated among archaeologists. OriginArd ploughs attested by circa 3000 BC in Mesopotamia and Europe; heavy mouldboard ploughs spread in medieval Europe; the steel plough dates to 1837 1 Cross-Tradition Connections
Associated With
Deere's contribution is the self-scouring steel plough of 1837, not the plough as such, which is ancient
Causes
Drought plus decades of deep ploughing that displaced the native grasses holding the topsoil
Sources
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