Yellow leaves on meyer lemon - Knowledgebase Question

walnut creek, ca
Question by mvp2202003
May 27, 2005
I'm assuming it is iron defiency. I bought it last year. Not much height growth but had 10+ small lemons. It is flowering some now. About 1 month ago leaves began to turn yellow and the veins remained green, now it is progressing and leaves are falling off. I feed it with citrus food, I fed with iron when yellowing began and a few days ago I folar sprayed it. HELP!!!!! Vicki


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Answer from NGA
May 27, 2005

0

Several things could be wrong. When young leaves (those near the end of shoots) turn yellow, we usually consider an iron deficiency to be the cause. High pH, high phosphorous and of course low soil iron levels all can result in iron deficiency symptoms. If older leaves are yellowing, nitrogen may be deficient. However, with iron or nitrogen deficiency, the leaves usually do not fall from the plant. Since citrus is a broadleaf evergreen, it will eventually lose its oldest leaves in favor of developing healthy new leaves. This may be what your tree is experiencing. Root problems can also cause these symptoms. Root rot infection, physical damage to roots, drought and overwatering (soggy, waterlogged soil) can all cause leaves to turn yellow and fall. Try to determine which of the cultural problems listed above may be the cause and take steps to alleviate it. If a root rot disease is present, there may be little that you can do at this time other than to avoid overwatering which tends to make things worse. Best wishes with your Meyer lemon tree!

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