Botanical Words Alphabetical List - DU
DUFF: The partly decomposed organic surface layer of forested soil.
DUNE: A mound of loose sand piled up by wind.
DUST/DUSTING: Method of pesticide control in which a dry substance is applied by spraying.
DUSTER: A device consisting of a bin, a wand with a nozzle, and a crank mechanism; used for applying dust or powder to plants.
DUST MULCH: A dry, loose surface layer of cultivated soil, which reduces water loss from the underlying soil.
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