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Butterhead Lettuce
(Lactuca sativa var. capitata)

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Nitrogen Deficiency
Nitrogen is a mobile element. Symptoms of nitrogen deficiency will appear first on the oldest leaves, and as the deficiency becomes more severe, will later appear on the younger leaves.

Expected symptoms include:

  • Leaves turn lighter green, then yellow and chlorotic
  • Loss of mass and stunting
  • Leaf necrosis in advanced stages


 



Early symptoms of nitrogen deficiency are exhibited as chlorosis in the oldest (lowest) leaves.



Healthy, nitrogen-supplied plant.

 


Nitrogen-deficient mature lettuce is stunted and generally chlorotic overall.
For Further Reference:
Cornell University Lettuce Handbook:
www.cornellcea.com/Lettuce_Handbook/introduction.htm

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