There are various sustainable practices for soil conservation:

1. Using organic fertilisers, such as compost and manure, improves soil organic matter and fertility without the harmful effects of synthetic chemicals.
2. Integrating trees and shrubs into agricultural landscapes helps enhance biodiversity, improve soil structure, and increase organic matter. Agroforestry systems can also provide additional income sources for farmers while promoting ecological balance.
3. Cover cropping is another technique. Growing cover crops like clover, rye, or legumes during off-season periods protects soil from erosion, enhances organic matter, and improves soil health by fixing nitrogen.
4. Diversifying crops instead of relying on single-crop systems prevents nutrient depletion and reduces vulnerability to pests and diseases. Monocultures can lead to increased soil degradation and require more chemical inputs to maintain productivity. 
5. Terrace farming and contouring on slopes can prevent soil erosion and surface run-off in hilly terrains as trees hold the moisture and soil in their roots. 
6. Utilising integrated pest management strategies reduces reliance on chemical pesticides by promoting biological control methods and using pest-resistant crop varieties. It also minimises chemical residues in the soil and supports a healthier soil ecosystem.
7. Crop rotation is also a good way to protect soil. Planting different crops in a sequence helps prevent soil nutrient depletion, reduces pest and disease cycles, and improves soil structure and fertility.