Which of the following is a disadvantage of cover crops?

• A. No chemicals, can influence vigor, good surface for machinery
• B. They always reduce vigor
• C. They are impossible on slopes
• D. They may be difficult to mow on slopes

Answer: (D)

Disadvantage here centers on practical management on the field. Cover crops bring benefits like reducing erosion and improving soil health, but on slopes they can be hard to manage, especially when it’s time to mow or terminate. Mowing on slopes poses safety risks and can be technically difficult: equipment may have reduced traction, control, and stability, making it tough to achieve uniform mowing and termination. This can lead to uneven cover, residue that interferes with subsequent operations, or increased erosion risk if termination isn’t well timed. The other statements describe benefits or incorrect assumptions, so they don’t capture this specific practical drawback as clearly.