salt up
Verb
Meaning
(transitive) to salt food for seasoning.
(transitive, of an engine, drain, nozzle, etc.) To become encrusted with salt, such as from seawater or from salt-treated roads.
(transitive, of soil) to become saltier, especially to become salty enough to inhibit agriculture.
(transitive, of a road) To treat with salt in preparation for snowfall.
Source: en.wiktionary.org