The study looked at how keeping crop residue and managing potassium levels can improve soil quality and crop productivity in maize and wheat fields. By using different amounts of crop residue and potassium, the researchers found that higher levels of crop residue and a 50% reduction in potassium fertilizer, along with seed inoculation with potassium solubilizing bacteria, led to better soil quality, root growth, and crop yield. This means that using these practices can help farmers grow healthier crops and improve the health of their soil in a no-tillage system.