pecan tree problem

Asked October 9, 2016, 9:12 PM EDT

Hello I only have three pecan trees and two of them are producing fine. The other one which is the biggest is not. Every year the pecan nuts get little black dots on them which grow and then a powdery white covering on them until they drop off about mid summer. Thank you. Will

Carlisle County Kentucky pecan horticulture nut trees pecan trees

1 Response

Your description sounds like this particular tree is very susceptible to pecan scab--a fungus that can cause nut drop if rainfall is normal/average for your region in the spring and summer. I suggest you look for photos online of pecan scab on nuts and see if that matches your problem. Trees that get scab must be sprayed with a fungicide regularly in the spring and summer to prevent infection. Consult your Univ. of Kentucky cooperative extension system for guidance on products recommended for pecan scab control in your state. You may also find informational help on scab and other problems, including recommended pesticides at http://pecan.ipmpipe.org/