Question

Which plough accessory is used to turn over a small ribbon like furrow slice directly in front of the main plough bottom?

(a) Coulter

(b) Gauge wheel

(c) Jointer

(d) Land wheel

The question was posed to me during an internship interview.

This is a very interesting question from Tillage System in section Tillage, Disc Plough & Numericals of Farm Machinery

Answer 1

Right choice is (c) Jointer

To explain: Jointer is a small irregular piece of metal having of a shape similar to an ordinary plough bottom. It looks like a miniature plough. The small furrow slice that is cut from left and upper side of the main furrow slice and is inverted so that all trashes on the top of the soil are completely turned down and buried under the right-hand corner of the furrow.