North American Fruit Explorers mailing list at ibiblio

["Scott Weber and Muffy Barrett" <bluestem_farm@juno.com>]

Steve,Ginda's question was a good one--what are you trying to accomplish?  
There is no general purpose organic spray; you choose sprays based on what 
you might be trying to accomplish.  The closest to a general purpose for 
insect damage might be Surround.  I've only used it occasionally, but it 
seems to make a big difference.   You an certainly cut out damaged sections 
and use what remains, although sometimes your sugars won't develop as well 
and almosst certainly decline with rots. Muffy Barrett
South Central Wisconsin

---------- Original Message ----------

 If I don't spray, will I be able to cut away damaged parts, and still eat 
the fruit.  No extra-protein jokes lol!


Steve

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>From dwoodard@becon.org  Sat Feb 11 12:16:22 2012
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Subject: Re: [nafex] Organic spraying of fruit trees?
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Steve, I suggest you have a look at Michael Phillip's books:

The Apple Grower 2nd edition
Chelsea Green, 2005

The Holistic Orchard: Tree Fruits and Berries the Biological Way
Chelsea Green, 2011

They are highly informative and most useful. I expect some libraries will
have them.

You might find it useful to read Paul Debach's book "Biological Control by
Natural Enemies." It's in many libraries, and the first edition is cheap.
See
http://www.bookfinder.com

A fair amount of information has been published recently about the role of
certain plants in hosting beneficial insects, especially in providing food
(nectar and pollen) for the adults of parasitic wasps and certain flies
which then lay more eggs to produce larvae which eats the pests out from
the inside. Many wildflowers (including weeds like wild carrot) are useful
in this way. It is said that Russian peasants of old times used to plant
dill and buckwheat in their orchards to reduce the attacks of codling
moth.
In the 1960s Dr. Karl Leius of Agriculture Canada Smithfield near Trenton
Ontario found that in abandoned orchards with a rich population of
wildflowers the incidence of codling moth infestation in the apples was
less.

The native hollies of the northeast such as Ilex opaca and I.
verticillata, harbour a pest which provides an alternate host for a
natural enemy of the apple maggot. The presence of these hollies has been
reported to be associated with a reduced incidence of apples damaged by
apple maggot (in an article by American workers in the Canadian
Entomologist some years ago).

Doug Woodard
St. Catharines, Ontario, Canada


> Is there an organic (one that will not harm wildlife, such as
amphibians)
> solution for spraying fruit-crop trees (apples/pears, stone-fruits,
etc.)?
> Is paw-paw (Asimina) a legitimate solution?  I know that even this is
toxic to fish (and I have no doubt toxic to amphibians).
> Anything I can do?  If I don't spray, will I be able to cut away damaged
parts, and still eat the fruit.  No extra-protein jokes lol!
> Steve