Shade is the cause of most stand losses. All turfgrasses requires sunlight to grow. If the sun does not hit the ground, consider shade tolerant ornamental or ground covers.
Soil compaction is the second most frequent cause of stand loss.
Check for compaction by forcing a 6 inch bladed knife or screwdriver into moist soil. You should be able to push the blade in with just your thumb over the end of the handle. These two factors are responsible for 80 percent of turf problems in Mississippi. Recommendations on this web site do not endorse any commercial products or trade names.