What is the optimal pH range for most crop growth?

The optimal pH range for most crop growth is between 6.0 and 7.0. This range is crucial because soil pH directly affects nutrient availability and microbial activity within the soil. Most nutrients are readily available to plants in this slightly acidic to neutral pH range, promoting robust growth and health.

Soils that are too acidic (like those in the 4.0 to 5.0 range) can lead to nutrient deficiencies, particularly for essential elements like phosphorus and calcium, which can be less available in highly acidic conditions. Conversely, soils with a pH above 7.0 may exhibit deficiencies in micronutrients such as iron, manganese, and zinc, as they become less accessible to plants.

Maintaining soil pH in the optimal range facilitates not only nutrient uptake but also boosts microbial populations that contribute to organic matter decomposition and overall soil health, further supporting plant growth.