Duration of juglone (walnut root residue) in soil?

Bill Shoemaker wshoemak at inil.com
Fri Dec 28 09:15:28 EST 2001





>I have an English Walnut 40 years old 60 ft tall at the very edge of one of
my fields, its one of the few trees I >....I don't see what all the fuss is
about...Bob.


Bob

    English walnut and black walnut are different species. Only black walnut
produces high levels of juglone. That's why your english walnut is safe.

Bill Shoemaker
Sr Research Specialist, Food Crops
Univ of Illinois - St Charles Hort Research Center




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