I have something on the leaves of my sweet potatoes that looks and feels like...

Asked June 13, 2014, 5:08 PM EDT

I have something on the leaves of my sweet potatoes that looks and feels like sand. It becomes less visible when I try to rinse it off but does not come off - a few days later the leaf will turn yellow and brown and die. I cannot find anything described like this elsewhere.

Pennsylvania

1 Response

Could you send a picture to this e-mail address: tgf2@psu.edu? I suspect that you are observing edema which is caused by cells rupturing on the udersides of the leaves due to wide fluctuations in moisture.