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This is a selection made from among articles on Indiana Fruit Trees. For a permanent link to this article, or to bookmark it for future reading, click here.

Black Walnut Trees Produce A Natural Insecticide

from: Marilyn Pokorney




REQUIREMENTS FOR REPRINT: You have permission to publish
this article free of charge in your e-zine, newsletter,
ebook, print publication or on your website ONLY if it
remains unchanged and you include the copyright and author
information (Resource Box) at the end. You may not use
this article in any unsolicited commercial email (spam).

You may retrieve this article by:

Autoresponder: juglone@getresponse.com
Website: http://www.apluswriting.net/articles/juglone.txt

Words: 246
Copyright: 2005 Marilyn Pokorney

Please leave the resource box intact with an active link,
and send a courtesy copy of the publication in which the
article appears to: marilynp@nctc.net
------------------------------------------------------------

The black walnut tree manufactures a substance that is a
natural insecticide according to experts at the Texas State
University in Austin.

American black walnut tress contain a tannic acid chemists
call juglone. The reddish yellow substance leaches from
leaves, and some believe exudes from roots, or transfers
from branches and foliage to the roots. Tree physiologists
agree that roots of other plants that come in contact with
those black walnut tree roots die--even other black walnut
seedlings.

Juglone is sometimes washed out of the still green walnuts
during late summer or even autumn rains. The growth of
plants 60 to 80 feet away are inhibited by the juglone. The
substance affects plants of various families. Studies have
found that tomatoes, alfalfa, potatoes, apples,
blackberries, rhododendron, mountain laurel and pine trees
are all affected.

According to a professor and extension forester at Iowa
State University, juglone is known to repel various garden
insects. Just by placing branches of the tree around the
house and under furniture dog and cat owners are amazed to
find that their pets have fewer fleas.

For more information on natural flea control:

http://www.apluswriting.net/onlynaturalpetstore/fleacontrol.
htm

For more information on natural garden products:

http://www.apluswriting.net/garden/gardensalive.htm

About the Author

Author: Marilyn Pokorney
Freelance writer of science, nature, animals and the
environment.
Also loves crafts, gardening, and reading.
Website: http://www.apluswriting.net






 



 

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