Moderate
The major effects of mulches, irrespective of their composition, are attributed to:
Correct answer: D. All of the above
- A. Suppression of weeds, by restricting the amount of light on the ground surface and thus hindering their germination and growth
- B. Conservation of soil, by preventing erosion
- C. Maintenance or improvement of soil structure, by eliminating or mitigating the severity of rain and wind action
- D. All of the above
Explanation
Mulches reduce weed germination by blocking light, limit erosion from rain and wind, and protect soil aggregates and structure. These are the principal benefits regardless of whether the mulch is organic or inorganic.
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