Harrows are used to prepare soil for planting or after ploughing. Disc, tine, and chain drive models are common types. Disc harrows are best for heavy jobs, tine harrows for lighter applications, and chain harrows for breaking up clods of earth.
Harrows are used to break up the soil or create a flatter surface in preparation for planting or after ploughing. Choosing the best harrow is a matter of deciding what types of conditions it will address and what type of equipment will be used in conjunction with this tool. There are a few general types: Disc models, tine models, and chain drive models are the most common types of harrows. Each is appropriate for different types of jobs.
The disc harrow is better suited to heavier jobs, as it will cut the soil more deeply than other systems. This is most appropriate for breaking up the soil surface after plowing or in preparation for setting up flower beds. The disc harrow, as the name suggests, will feature several thin discs mounted on an axle within a frame. It is usually pulled behind a tractor or ATV, and some of these units can also be powered; this means that the discs will rotate at a speed independent of the drag speed of the towing vehicle. They are usually powered by a tractor’s power take-off (PTO) system.
For lighter applications, a tine harrow is ideal. This machine will feature bits known as teeth that will be mounted on a metal frame. Like disc harrows, tine harrows can be pulled by a tractor or off-road vehicle, although manual units are also available. Tooth harrows break up the soil just enough to help break up weeds and surface rocks and loosen the soil in preparation for planting. This tool is best used after heavier tools are used to break up any solid surface; a tine harrow can be used after the disc harrows have been used on a bed of earth.
The chain harrow is perhaps the lightest version of this implement. It may look like a section of chain link fencing mounted within a metal frame that is usually pulled by hand or pulled by a tow vehicle. These harrows are generally used to break up clods of earth left over from plowing or other tillage machines. Such harrows are also sometimes used in sports applications: baseball fields in particular must be dragged with chain harrows to flatten internal dirt and remove any loose pebbles, lumps of dirt or debris that may have been blown onto the field.
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