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Soil pH and nutrients availablity
pH affects the availability of plant nutrients in soil. Soil pH determines whether nutrients are available or bound up and unavailable. In acidic soils, micronutrients like iron and manganese are more available, but macronutrients like phosphorus may bind to aluminum and become unavailable. In alkaline soils, the opposite is true - micronutrients like iron become less available while macronutrients like phosphorus precipitate as calcium phosphates. The availability of nutrients like nitrogen, phosphorus, and boron is maximized in soils with a neutral pH between 6 and 7.5. Maintaining optimal soil pH is important for ensuring plants have access to the nutrients they need.
