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Chlorosis
http://en.wikipedia.org/wiki/Nitrogen_de... Several reasons. It could be Genetic or also iron defeciency. http://en.wikipedia.org/wiki/Iron_defici...
Mitchell Canyon
Spotted on Apr 1, 2015
Submitted on Apr 1, 2015
1 Comment
Discoloration caused by nitrogen deficiency usually attacks the lower and older leaves. This whiteness was on the upper and newest and most tender leaflets. Chlorophyll deficiency usually is a genetic condition whereas nitrogen deficiency would be due to lack of nitrogen in the ground.
However I just saw a few leaflets that were white. Maybe they were the only ones deprived of nitrogen ?