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Nitrogen [ Physiology - Chemistry ]
Abbreviation: N

Dictionary of botanic terminology - index of names


Nitrogen deficiency [ Horticulture - Phytopathology ]
  Absence or insufficiency of nitrogen needed for normal growth and development.  
Nitrogen is required by plants in higher concentrations than any of the other elements, except potassium in certain instances. Plants grown without nitrogen grow very slowly. Plants are stunted and show a general yellowing of the foliage. The symptoms of nitrogen deficiency will first occur in the older leaves. The leaves turn from a pale green colour to a yellow and eventually leaf drop occurs. The younger leaves remain green for longer periods of time but eventually the whole plant exhibits a pale green to yellow colour.





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