What is one benefit of using organic fertilizers in horticulture?

Using organic fertilizers in horticulture offers numerous benefits, one of the most significant being their ability to improve soil structure and enhance microbial activity. Organic fertilizers, which are derived from natural sources such as compost, animal manure, or plant residues, contribute organic matter to the soil. This organic matter helps to create a better soil structure by promoting the formation of soil aggregates, which improves aeration, water retention, and drainage.

Additionally, organic fertilizers stimulate the growth of beneficial soil microorganisms. These microbes play a vital role in breaking down organic materials, making nutrients more available to plants, and contributing to a healthy soil ecosystem. A vibrant microbial community can also help suppress soil-borne diseases and pests, further supporting plant health.

While the other choices mention potential advantages or characteristics of fertilizers, they do not accurately reflect the unique benefits provided by organic fertilizers in enhancing the overall health and vitality of soil, making option B the correct choice.