The primary impact of agricultural practices on soil quality includes degradation and loss of fertility. Intensive farming techniques, such as the overuse of fertilizers and pesticides, can lead to nutrient depletion and contamination. Additionally, practices like monoculture can reduce biodiversity in soil ecosystems, negatively affecting microorganisms essential for soil health. Sustainable agriculture, which promotes crop rotation and organic methods, can help improve soil structure and function, preserving its capacity to support food production.