Re: CULT: pH, rot

I dunno Bill - since Erwinia is only able to grow under anaerobic
condtions, which are not at all normal/widespread in well-drained garden
soil <except when saturated with water>, it seems more likely that
presence/absence of pockets of anaerobic conditions would have an
over-riding effect on Erwinia populations, given the wide range of pH
under which Erwinia will grow.

When soil remains saturated long enough for anaerobic conditions to
occur (rainwater has some dissolved oxygen in it, but it is depleted by
soil occupants fairly quickly - slower at low temperatures, much faster
in hot weather), roots suffocate & die, which, from what you've said
(re: sick plant), triggers Erwinia to start its bad act.

Your comments have made me more curious about Erwinia in leaf tissue - I
wonder how leaves that are alive can provide anaerobic conditions?

--
Linda Mann east Tennessee USA zone 7/8
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