Which of the following attachments to a mouldboard plough is/are correctly matched with its functional purpose?
Options:
(A) Rolling coulter — makes a clean vertical cut separating the furrow slice from the unploughed land ahead of the share.
(B) Jointer — a miniature plough bottom that cuts a small furrow slice off the top furrow corner and deposits it in the furrow bottom to bury trash.
(C) Trash board — fitted directly above the mouldboard to deflect tall vegetation and crop residue downward into the open furrow.
(D) Landside heel — provides vertical flotation on soft peat soils to prevent excessive sinkage.
Answer Key:
A, B, C
Step-by-Step Solution & Explanation
• Rolling coulters cut vertical furrow walls and slice surface vines (A is correct).
• Jointers peel off trashy furrow corners to ensure complete weed burial (B is correct).
• Trash boards deflect crop residue into the furrow bottom (C is correct).
• The landside heel absorbs downward vertical and lateral furrow reactions on the rearmost bottom, not vertical flotation on peat soils (D is false).