What is a benefit of using organic matter in soil?

Using organic matter in soil enhances nutrient retention, which is one of its most significant benefits. Organic matter improves the soil's structure, allowing it to hold onto nutrients more effectively, which subsequently facilitates their availability to plants. This process occurs as organic matter, such as compost or decomposed plant materials, creates a network of pores that helps retain moisture and nutrients.

Additionally, organic matter can improve soil aggregation, leading to better water infiltration and aeration, further supporting plant growth and health. The presence of organic matter also promotes a diverse microbial ecosystem, which plays a crucial role in the breakdown of nutrients and their cycling within the soil ecosystem.

In contrast, increasing soil acidity, decreasing microbial activity, or reducing soil temperature would not promote a healthy growing environment, making those options less beneficial compared to the positive effects of enhancing nutrient retention.