variants:
or top dressing
or less commonly top-dressing
plural topdressings or top dressings also top-dressings
Definition of topdressing
: a material (such as compost) used to top-dress soil
Bagged steer manure was used in the past as a topdressing for lawns when overseeding.— Bob Morris By adding an inch of top dressing each year you can get a nice thick layer of topsoil in a few years.— Gerald Filipski
also
: the act or practice of applying topdressing
Cultivation in conjunction with topdressing should be accomplished during times of the year when there is adequate moisture available and when the turf is actively growing and is in a position to repair itself. — Jim Hermann
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Merriam-Webster unabridged
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Time Traveler for topdressing
The first known use of topdressing was in 1741
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