What do a.m. and p.m. stand for?


[pohst-i-mur-juh ns] /ˌpoʊst ɪˈmɜr dʒəns/
occurring or applied after emergence of a plant from the soil and before full growth:
postemergence frost.
Origin of postemergence
1935-40; post- + emergence Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for postemergence
  • Broadleaf weeds are especially troublesome in that there are currently no approved postemergence herbicides.
  • There are no postemergence herbicides labeled for liverwort control and hand removal is currently the only option.
  • Glyphosate is a nonselective broad-spectrum herbicide used extensively throughout the world for postemergence weed control.
  • postemergence weed control in snap bean, carrot, and lettuce using a precision-guided flame weeder.
  • For normal varieties, both preemergence and postemergence herbicides will be used in accordance with the weed spectrum.

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