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<A
HREF="http://news.bbc.co.uk/hi/english/sci/tech/newsid_1282000/1282222.stm">
Click here: BBC News | SCI/TECH | Organic apples tickle tastebuds</A>

<But they noted that organic farming systems were "less efficient, pose
greater health risks and produce half the yields of conventional farming". >

i will be curious to know what are those heath risks, considering that most
of  the organic farmers in France  switched to organic because of ther
health problems related to the use of pesticides in the field.
At the time  you din't go organic because it was profitable but because you
had too.
For the efficiency:    by weight it is true because most of conventional
produce have oedema. by solid content and nutrition value it will be worth
comparing , by investment cost  and environmental long term impact  it could
be interesting .
Chemical farming is efficient for the banks not the farmers.
jean-claude