Topdressing is the process of adding native or amended soil to the surface
of the turf. Done correctly, this technique can level uneven surfaces,
enhance the soil for better drainage and rooting, control thatch, and
assist in seeding operations. [17]
Topdressing is often completed in conjunction with aeration and
seeding in turf maintenance programs and renovation procedures. Topdressing
not only enhances turf quality and vigor but improves its resistance to
stress. [18]
Timing is essential for an effective topdressing program and sand or soil
should be applied often enough to match the growth rate of turfgrass.
[19]
The primary goal of aerating is to relieve compaction, which is the compression
of the topsoil due to foot or vehicular traffic. Heavily trafficked courses,
or areas where carts tend to stray from the paths can be particularly
problematic because when the soil becomes compacted, turf root systems
can't get the oxygen they need, and the soil becomes a barrier to root
penetration. Therefore the soil must be aerated occasionally to restore
its viability as a growing medium for turf plants. Similar to topdressing,
timing is an important facrot in aeration. When timing aeration, be sure
that the grass is actively growing so that it will recuperate quickly.
Despite its long-term benefits, aeration temporarily stresses the turf.
In most soils, full recovery takes about 15 days.[20]
