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Re: Damping Off

It's refreshing to see reasonable refrences sited. Hartman and kester is
a good general reference. As far as the mix goes there are several
additional things to consider. First milled sphagnum peat does indeed
inhibit damping off to a certain extent but the reed sedge type peats
which are usually much more decomposed do not seem to share that
benefit. Also mixes that contain vermiculite tend to stay very soggy
once they are overwatered. 50-50 mixes with peat and pearlite seem to
work much better with sensitive plants, mostly because it is more
difficult to overwater them. We prefer a mix that retains relatively
little water. Plants that are grown on the dry side and grit covered
seldom damp off. 
  If you do need to use a fungicide(and we seldom do) it is very
important to pick one that kills the particular fungus that is causing
the dampoff, some of the most commonly used fungicides actually are
little better than placebos when used against the wrong fungus. Read the
labels carefully and learn to identify pathagens or send a sample to
someone who can.
Bob Stewart - Arrowhead Alpines
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