Landscaping License Practice Test

Which of the following is a primary benefit of compost in landscaping?

1. It reduces earthworm populations.

2. It eliminates the need for soil amendments.

3. It enhances soil fertility.

4. It increases insect pests.

The correct answer is: It enhances soil fertility.

Compost is a significant asset in landscaping primarily because it enhances soil fertility. When added to the soil, compost provides a rich source of nutrients that are essential for plant growth. This organic matter improves the soil structure, facilitating better aeration, moisture retention, and root development. As the compost breaks down, it releases nutrients like nitrogen, phosphorus, and potassium, which are crucial for healthy plant growth. Additionally, compost encourages beneficial microbial activity in the soil, further promoting nutrient availability and enhancing overall soil health. In contrast, the other choices do not represent accurate benefits of compost. For example, compost does not reduce earthworm populations; in fact, it usually supports and increases earthworm activity, which is beneficial for soil health. Additionally, while compost can improve soil condition, it does not completely eliminate the need for other soil amendments, as soil conditions can vary and may still require adjustments based on specific plant needs. Lastly, compost does not increase insect pests; rather, it tends to promote a balanced ecosystem that can deter harmful pests while attracting beneficial insects.