Which factor is often considered an advantage of using cover crops?

Using cover crops has the significant advantage of enhancing soil moisture retention. When cover crops are grown, their root systems can improve soil structure and increase organic matter in the soil. This, in turn, helps to create a more favorable environment for soil microorganisms and improves the soil's ability to absorb and retain moisture. This capacity for better moisture retention is particularly beneficial in dry periods or regions susceptible to drought, as it can help to ensure that crops have adequate water available for growth.

The other options represent disadvantages rather than advantages associated with cover crop use. For instance, increased pest pressure can be a potential downside if cover crops attract certain pests that affect cash crops. Likewise, higher reliance on fertilizers counteracts the benefits that cover crops can offer in terms of nutrient cycling and improving soil fertility. Lastly, decreased organic matter contradicts the goals of utilizing cover crops, as one of their primary benefits is to increase organic matter content in the soil.