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Regarding sweet potato foliar disease #802718

Asked July 24, 2022, 11:39 AM EDT

Our sweet potatoes' leaves have the following symptoms, is that a kind of disease? How to control it, thanks.

New York County New York

Expert Response

Here are more photos for reference. Thanks

The Question Asker Replied July 24, 2022, 6:25 PM EDT

Good morning Emma,

We believe this is a mosaic virus, particularly Alfalta Mosaic Virus.

Here are some links about the virus:

https://www.vegetables.cornell.edu/pest-management/disease-factsheets/virus-and-viroid-diseases-of-potato/

http://ipm.ucanr.edu/PMG/GARDEN/VEGES/DISEASES/potatomosaicvirus.html#:~:text=For%20the%20most%20part%2C%20mosaic,overwintering%20reservoir%20of%20these%20viruses.

-CCE UC Master Gardeners

An Ask Extension Expert Replied July 27, 2022, 10:12 AM EDT

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

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