a) Sod or breaker
b) Slat
c) Stubble
d) General purpose
Answer: c
Explanation: Stubble type’s relatively abrupt curvature lifts, breaks and turns the furrow slice. Its curvature is not gradual but it is abrupt along the top edge. This causes the furrow slice to be thrown off quickly, pulverising it much better than the other types of mouldboard.
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