Class2

1. MOULD BOARD PLOUGH

2. Mould board plough Function: 1) cutting the furrow slice 2) lifting the soil 3) turning the furrow slice 4) pulverising the soil .

3. Components a) Share b) Mould board c) Land side d) Frog and e) Tail piece.

4. Share Share point : Cutting edge: Wing of share: Gunnel : Cleavage edge:

5. Types of Share i) Slip share ii) Slip nose share iii) Shin share iv) Bar point share -

6. Mouldboard Types of mould board

7. Plough accessories Jointer small irregular piece of metal of shape of an ordinary plough bottom. purpose is to turn over a small ribbon like furrow slice directly in front of the main plough bottom. Coulter to cut the furrow slice vertically from the land ahead of the plough bottom. It cuts the furrow slice from the land and leaves a clear wall. It also cuts trashes which are covered under the soil by the plough.

8. Rolling type disc coulter Sliding type knife coulter Jointer Coulter

9. Gauge wheel auxiliary wheel maintain an uniform depth. Land wheel wheel of the plough which runs on ploughed land. Front furrow wheel front wheel of the plough runs in the furrow. Rear furrow wheel rear wheel of the plough which runs in the furrow.

10. Adjustment of mouldboard plough ( i ) Vertical suction and (ii) Horizontal suction. Vertical suction (Vertical clearance) the maximum clearance under the land side and the horizontal surface when the plough is resting on a horizontal surface in the working position maximum clearance between the land side and a horizontal plane touching point of share at its gunnel side and heal of land side Horizontal suction (Horizontal clearance)

11. Throat clearance It is the perpendicular distance between point of share and lower position of the beam of the plough

12. Plough size The perpendicular distance from wing of the share to the line jointing the point of the share and heel of land side is called size of plough. The size of the mouldboard plough is expressed by width of cut of the soil.