Which statement about soil moisture and nutrient retention is true?

The statement that clay soils hold moisture but can retain nutrients poorly is accurate because clay particles are very small and densely packed, which allows them to hold a significant amount of water. This capacity makes clay soils high in moisture retention, helping to maintain water supply for plants even during dry conditions. However, the same compact structure that aids in moisture retention can also limit nutrient availability and retention. While clay has a high cation exchange capacity (CEC), making it capable of holding onto certain nutrients, poor drainage and aeration can inhibit the bioavailability of these nutrients to plants.

This scenario highlights a balance; while clay soil excels at holding water, the very properties that make it good for moisture retention can impede nutrient retention in practice. The implications for gardening or agricultural practices emphasize the need for careful management to improve nutrient availability, such as utilizing organic matter to enhance soil structure. Understanding these characteristics is crucial for gardeners and farmers when assessing soil types for planting considerations.