Which type of organic matter is best to add to the soil?

Animal manure is highly beneficial for soil health due to its rich nutrient content, including nitrogen, phosphorus, and potassium, which are essential for plant growth. It also contains organic matter that improves soil structure, enhances moisture retention, and promotes beneficial microbial activity. By incorporating animal manure into the soil, it helps to create a more fertile environment that supports plant development and overall ecosystem health.

While plant compost also contributes organic matter and nutrients, it typically contains fewer nutrients than well-composted animal manure, especially if the compost is primarily made from plant material with lower nitrogen content. Wood chips, while useful for mulching and improving soil aeration over time, break down slowly and may not provide immediate nutrient benefits. Green clippings can add nitrogen to the soil, but they often contain high moisture content and can lead to nitrogen leaching or potential odor issues if not managed properly. Therefore, among the options, animal manure is considered the most advantageous for enriching soil fertility effectively.