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Components of a simple drawn plow: 1) beam; 2) three point hitch; 3) height regulator; 4) coulter (or knife) 5) chisel 6) plowshare 7) moldboard Instrument for cleaning a plowshare used at a mill near Horažďovice, Czech Republic. In agriculture, a plowshare or ploughshare (UK; / ˈ p l aʊ ʃ ɛər /) is a component of a plow (or plough).
A plough or plow (both pronounced / p l aʊ /) is a farm tool for loosening or turning the soil before sowing seed or planting. [1] Ploughs were traditionally drawn by oxen and horses but modern ploughs are drawn by tractors. A plough may have a wooden, iron or steel frame with a blade attached to cut and loosen the soil.
A simple drawn plough: 4) marks the coulter (using an early knife-like design) A (US:) colter / (British:) coulter (Latin 'culter' = 'knife') is a vertically mounted component of many ploughs that cuts an edge about 7 inches (18 cm) deep ahead of a plowshare. [1] Its most effective depth is determined by soil conditions. [2]
Reduced tillage [note 1] leaves between 15 and 30% crop residue cover on the soil or 500 to 1000 pounds per acre (560 to 1100 kg/ha) of small grain residue during the critical erosion period. This may involve the use of a chisel plow, field cultivators, or other implements.
In contour plowing, the ruts made by the plow run perpendicular rather than parallel to the slopes, generally furrows that curve around the land and are level. This method is also known for preventing tillage erosion. [2] Tillage erosion is the soil movement and erosion by tilling a given plot of land. [3]
Most ploughing was done with a heavy wooden plough with an iron coulter, pulled by oxen, which were more effective on heavy soils and cheaper to feed than horses. Obligations to the local lord usually included supplying oxen for ploughing the lord's land on an annual basis and the much resented obligation to grind corn at the lord's mill. [30]
In the days when steam ploughing was common, the engine would often remain on the headland and pull the plough across the field by a wire rope. There would be severe compaction of the headland but little compaction of the rest of the field. There would usually be two engines, one on each headland, and they would winch the plough to and fro ...
Currently, dry milling is mainly focused on corn-based products for human and animal consumption, or utilized during fuel ethanol production. The main objective of the dry-milling process is to separate the endosperm , which is mainly composed of starch , from the germ and pericarp fibers as much as possible.