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Potassium [ Physiology - Chemistry  ]
Abbreviation: K

Dictionary of botanic terminology - index of names

Potassium deficiency [ Horticulture - Phytopathology ]
  Absence or insufficiency of potassium needed for normal growth and development.  
Deficiency symptoms of potassium are exhibited in the older leaves of the plant first. A browning (dead tissue) occurs along the leaf margins. As symptoms become more severe, the browning progresses into the tissue between the leaf veins, and to younger leaves. Potassium deficiency can also be expressed in irregular brown spots throughout the leaves. Potassium deficiency also causes a reduction in plant growth.





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