Tangerine Trees
Q.

Tangerine tree has bumpy fruit

Zone Florida | nene212 added on September 5, 2014 | Answered

I am new to citrus trees. My tree has a lot of tangerines but they look bumpy. What is wrong with them? The fruits are green with bumpy spots. When they ripen, it is still bumpy. What fungus does the tree have?

A.
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theficuswrangler
Answered on September 9, 2014

Most diseases that produce bumps on the fruit, called cankers, galls, or scabs, involve brownish discolorations of the bumps. This article shows the common examples: http://amarillo.tamu.edu/files/2010/11/CitrusCankerPathologyTrainingCHRP.pdf
If the bumps on your fruit aren't discolored, you might have a simple condition caused by nutrient imbalance or environmental stress. This article has information on tangerine growing: https://www.gardeningknowhow.com/edible/fruits/tangerine/mandarin-orange-tree-care.htm
Please consider making use if the resources at the County Extension Service. Take some samples to them; they will be able to tell you the cause and if anything needs to be done. This link will help you find the nearest office: https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm

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