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Name: Ingrid W.
Status: other
Age: 50s
Location: N/A
Country: N/A
Date: 12/10/2002
Question:
I have an English walnut tree that produces many walnuts each year. Before the walnuts get ripe many of them get black spots on the hull that are mushy. Those walnuts are usually not good when ripened. Can you tell me what causes this and how to prevent it? I live in the high desert of California where the climate is dry and summer temperatures get into the high 90's. The winters get cold and we have some snow most years.

Replies:
The following might be helpful

http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7430.html

http://www.ag.uiuc.edu/~vista/html_pubs/NUTGROW/diseases.html

http://www.wvu.edu/~exten/infores/pubs/pest/pcerti12.pdf

Anthony R. Brach, Ph.D.


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