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Old May 27, 2007   #14
dice
Tomatovillian™
 
Join Date: Jan 2007
Location: PNW
Posts: 4,743
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"I suspect it is just an environmental thing, and probably nothing to worry about, since the plant looks healthy otherwise."

Possible. There is usually a little (or a lot of) purpling
of the stems with phosphorus deficiency, as well as
whatever leaf symptoms there may be. Fusion pointed
out in a long post 6-8 weeks ago how pH and other
nutrients can affect phosphorus uptake, so a simple
lack of phosphorus is not necessarily the problem,
even it shows those symptoms.
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