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As the other person said, plows have picked up very regional names, so one area can be very different than another. Here in Minnesota there is in-furrow and on-land hitches for plows. This refers the the right rear tire of the tractor (and right front if a wide-front). The tractor tire will either run in the furrow, or beside it up on-land. A plow of 4 bottoms or less has to be in-furrow. A plow of 7 bottoms or more has to be on-land. Plows around 6 bottoms can go either way. The tractor needs to be approximatly centered on the plow for a good pull, and a smaller plow doesn't leave room for anything but in-furrow, while a big wide plow will need dualed 4wd that doesn't fit in the furrow, and too wide for the right side of the tractor to reach the furrow. Other major plows types: Molboard or disc (the curved metal bottom, or a giant angled disc blade); 3-point, semi-mount, or trailer (smaller plows can mount on a 3-point, mid-sized & large plows can mount on the bottom 2 arms of the tractor 3-pt plus a hyd cylinder to raise & lower the steering rear wheel, and a small to large plow that sits on 3 or more wheels of it's own & is pulled by the tractor drawbar). --->Paul
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