How does pH affect nutrient availability in soil?

Extreme pH levels can significantly influence nutrient availability in soil, making this option accurate. Soil pH is a measure of acidity or alkalinity and plays a crucial role in determining the solubility of nutrients. In highly acidic (low pH) or highly alkaline (high pH) conditions, the availability of essential nutrients such as nitrogen, phosphorus, potassium, and micronutrients can become limited.

For example, at low pH, essential nutrients like calcium and magnesium may become less available to plants, while elements like aluminum can become more soluble and potentially toxic. Conversely, at high pH, micronutrients such as iron, manganese, and zinc may precipitate and become unavailable to plants, leading to deficiencies.

Understanding the relationship between pH and nutrient availability helps in soil management and ensuring optimal plant nutrition. By maintaining pH levels within a specific range, typically around neutral (pH 6 to 7), nutrient availability is maximized, promoting healthy plant growth and development.