Re: Re: Cult: Heat, Rot, Etc.

Francelle,


>At one time this summer close to 75% were
>affected by rot.  I treated with Clorox solution and comet cleanser, and
>when that didn't do much good, with the antibacterial soap.  This time,
>six weeks later, I found active rot in only about a dozen.  I started
>out with 158 guest irises.

I guess my question is whether you think you may have it flare back up when
the weather gets cooler?  Do you have fall rains as a general rule?  I'm
expecting it to perhaps go through another spell of getting worse if more
rain starts this fall.  So far, having rain or not having it, hasn't seemed
to make any difference to the numbers.  A line chart would not have shown a
spike after rains.  Not so far, but it does stand to reason that moisture
could/should create conditions more conducive to the bacterial growth.  In
fact, I don't understand, not at all, why I haven't seen the spike after
rainy periods.  We've now had several in varying amounts along with some
humid days strung together.  Luckily, the effect has not been negative so
far.

>Out of the 396 seedlings I planted this spring, I'll be lucky to have a
>dozen left when cool weather arrives some time in October.  Rot has
>taken almost all of them.

This I find amazing!  Seedlings do not act like the mature plants here.  So
far as I can tell, the only seedlings I've lost were due to the grasshoppers
or another insect.  Nearly everything I encased in the shadecloth rectangle
has lived.  I soak them - and I mean really soak them - on an every other
day schedule.  They haven't grown as well as in previous years.  Whether
that's due to being enshrouded under the cloth under a shade tree or whether
the crosses I made just aren't as vigorous as those in the past I can't
tell, but I suspect some of both.  Certainly there are late germinating
seedlings that were from the year before that haven't behaved the same.
Hardly any increase this year.  The foliage is somewhat floppy due to the
shortage of sun.  Otherwise, they look healthy, but behind on growth
compared to previous years.  But I've never had a seedling rot.  I'm pretty
sure of that.  They simply don't react the same to their surroundings as
mature plants.  I wonder why not?  I missed the very extreme heat this year
that you've had, but it still had some very hot days.  And the several years
before this summer have been scorchers with long days above 100.  There
should some key about what is different between our handling of the
seedlings.

Donald Eaves
donald@eastland.net
Texas Zone 7b, USA




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