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- Q209042 subject Q6459548.
- Q209042 abstract "In agriculture, a harrow (often called a set of harrows in a plurale tantum sense) is an implement for breaking up and smoothing out the surface of the soil. In this way it is distinct in its effect from the plough, which is used for deeper tillage. Harrowing is often carried out on fields to follow the rough finish left by ploughing operations. The purpose of this harrowing is generally to break up clods (lumps of soil) and to provide a finer finish, a good tilth or soil structure that is suitable for seedbed use. Coarser harrowing may also be used to remove weeds and to cover seed after sowing. Harrows differ from cultivators in that they disturb the whole surface of the soil, such as to prepare a seedbed, instead of disturbing only narrow trails that skirt crop rows (to kill weeds). There are four general types of harrows: disc harrows, tine harrows (including spring-tooth harrows, drag harrows, and spike harrows), chain harrows, and chain-disk harrows. Harrows were originally drawn by draft animals, such as horses, mules, or oxen, or in some times and places by manual labourers. In modern practice they are almost always tractor-mounted implements, either trailed after the tractor by a drawbar or mounted on the three-point hitch.A modern development of the traditional harrow is the rotary power harrow, often just called a power harrow.".
- Q209042 thumbnail 12_foot_spring-tooth_drag_harrow.jpg?width=300.
- Q209042 wikiPageExternalLink Category:Harrows.
- Q209042 wikiPageExternalLink harrows.htm.
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- Q209042 wikiPageWikiLink Q6459548.
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- Q209042 wikiPageWikiLink Q889539.
- Q209042 comment "In agriculture, a harrow (often called a set of harrows in a plurale tantum sense) is an implement for breaking up and smoothing out the surface of the soil. In this way it is distinct in its effect from the plough, which is used for deeper tillage. Harrowing is often carried out on fields to follow the rough finish left by ploughing operations.".
- Q209042 label "Harrow (tool)".
- Q209042 depiction 12_foot_spring-tooth_drag_harrow.jpg.