On Wed, 04 Jul 2007 20:12:00 -0500, ginny wilken <[log in to unmask]>  
wrote:
>
> Got it! Ethylene gas, and here's a site all about "safe" use:
>
> http://www.ethylenecontrol.com/about.html

That's interesting -- it says they use ethylene to ripen (among other  
things) tomatoes and bananas -- both of which already produce ethylene gas  
all by themselves as part of the ripening process.

-- 
   Robert Kesterson
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