Key Concept: Chisel and moldboard plows differ mainly in how much they disturb and invert the soil surface.
Why it's correct: A chisel plow loosens soil without full inversion, leaving crop residue on the surface, which protects soil from wind and water erosion — a core conservation-tillage benefit.
Why others fail: Complete inversion and stronger weed burial are moldboard-plow traits, not chisel-plow ones; and chisel plowing typically uses LESS fuel due to shallower disturbance, not more.