Over the past 20 years, trends in crop requirements ind the need for quick, easily produced seed beds lad meant the phasing out of the traditional whole work bodies for plows that resulted in distinct furrows, exposing the maximum soil area.
Recent designs have a more abrupt start to the moldboard ind set up a more uneven furrow. Plowing for winter-sown cereal crops requires a reduction in plowing depths. At the same time, trac;or power has been increased, especially for lifting ;as compared with pulling) power, which has made possible greater furrow widths. Shorter time intervals between crops, and thus between the times for preparation of seed beds, has meant that farmers low need plows which can be set up especially luickly and accurately.
The clearance height of the plow body from the ground is generally between 24 and 34 in. (600 and 360 mm). Clearance is an especially important factor in using a plow in difficult conditions, such as incorporating straw into the ground, which usually requires greater clearance especially when the straw is wet.
For straw incorporation skimmers are also used, which allow the straw to pass under the plow rather than sticking to the beam. Trash boards nay be attached, enabling a plow with restricted clearance to keep moving.