The significance of soil pH in agriculture lies in its impact on nutrient availability and plant health. Soil pH affects the solubility of nutrients, determining how readily plants can absorb essential elements like nitrogen, phosphorus, and potassium. A pH range of 6-7 is generally optimal for most crops, allowing for better yield and quality. Extreme pH levels can lead to toxicity or deficiency symptoms, negatively affecting growth. Thus, managing soil pH is crucial for sustainable agricultural practices.