orange trees

I have 5 different orange trees, and all have the same problem: small hard fruit, discolored, dark on sides. I also have a grapefruit tree without any problems. Can you suggest a solution?

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1 Comment To "orange trees"

#1 Comment By Liz Baessler On 03/21/2017 @ 11:24 am

You might be looking at Alternaria Rot. This is a fungal disease that attacks oranges but leaves grapefruits alone. It would cause those hard, dark sides on your fruits. This site offers some good advice on treating and preventing it:
http://ipm.ucanr.edu/PMG/r107100811.html ^[1]

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[1] http://ipm.ucanr.edu/PMG/r107100811.html: http://ipm.ucanr.edu/PMG/r107100811.html

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