FFA Horticulture CDE General Practice Exam

Which of the following is true about soil health?

1. Soil pH is irrelevant

2. Organic matter improves soil structure

3. Soil organisms are detrimental to plant growth

4. Heavy metals are beneficial for plant health

The correct answer is: Organic matter improves soil structure

Soil health is a critical aspect of horticulture and agriculture, and understanding its components helps promote healthier plants and better crop yields. The statement that organic matter improves soil structure is valid and highlights the importance of organic materials in promoting soil health. Organic matter plays several key roles in enhancing soil structure. It helps bind soil particles together, forming aggregates that improve aeration, water infiltration, and retention. This improved structure enhances root development, making it easier for plants to access nutrients and water. Additionally, organic matter contributes to the nutrient-holding capacity of the soil, thereby supporting beneficial microbial activity that is essential for plant growth. Recognizing the significance of organic matter is vital for anyone involved in horticulture, as it directly influences the biological, chemical, and physical properties of the soil, making it a cornerstone of soil health management.