Question

Which of the following is a primary function of a moldboard plow in soil tillage?

• A. Breaking soil compaction layers
• B. Cutting and inverting the soil slice
• C. Pulverizing soil clods
• D. Leveling the soil surface

Hint:

Moldboard plows are primarily used for turning over the upper layer of the soil, bringing fresh nutrients to the surface.

Answer 1

The Correct Option is B

The moldboard plow is designed to cut through the soil and invert it, burying weeds and crop residues. This action helps in aerating the soil and preparing a clean seedbed. The curved moldboard lifts and turns the soil slice, effectively inverting it.

Answer 2

Function-by-Name: 'Moldboard' refers to the curved steel surface that lifts and turns soil — the name itself hints at the function.

This curved surface cuts a slice of soil and inverts it, burying weeds/residue and exposing fresh soil — matching option 2 exactly.

Breaking compaction (subsoiler's job), pulverizing clods (harrow's job), and leveling (leveler/planker's job) are all done by OTHER implements, not the moldboard plow's core action.