Re: ROT

From: celia storey <storey@aristotle.net>

>Is the Erwinia carotovora present in most locations?  Or is it arriving
>on new rhizomes?  Or both?

I understand it could be either, but the soil presence is more general. We
soak incoming rhizomes in dilute bleach solution just in case, and not only
to head off Erwinia.

>Also, the victims attacked have seemed to have what I would describe
>as limp/soft fan foliage.  They may stay in this stage some time
>(up to five weeks) before any rot is readily apparent.

I, too, have noticed this. But I've also lost fat, firm rhizomes that came
into the garden with dry stiff foliage and were planted with none of the
rhizomes underground -- just the roots.

By and large in my garden, rot is more prevalent where dirt covers the heel
or belly (as you put it) of the rhizome... which is a problem in light of
the tendency noted by Sandra of many TBs to pull themselves underground as
they set roots.

celia
s*@aristotle.net
Little Rock, Arkansas, USDA Zone 7b
-----------------------------------
257 feet above sea level,
average rainfall about 50 inches (more than 60" in '97)
average relative humidity (at 6 a.m.) 84%.
moderate winters, hot summers ... but lots of seesaw action in all seasons



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