It also is a nutrient source, nutrient retainer, and a contributor to structural stability in soil. Avoid excessive tillage . Be careful in your use of fertilizers and pesticides . They can harm non-target organisms and pollute water and air if they are mismanaged. Increase ground cover .
Ground cover protects the soil from wind and water erosion, and from drying and crusting .
Increase plant diversity . Diversity is beneficial for several reasons. Each crop contributes a unique root structure and type of residue to the soil. A diversity of soil organisms can help control pest populations and a diversity of cultural practices can reduce weed and disease pressures.