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Re: rooting temps

> 
> It is also desirable to wean the rooted cuttings from the warmer
> temperatures prior to transplanting so the rate of cell division in the
> roots is not suddenly stopped when the transplanted cutting needs to be
> generating roots in order to establish itself in a new pot or site.  This
> is why I prefer to root in small batches in flats or pots.  I have zones in
> my propagation bed and can simply move the flats rather than having to
> readjust the thermostats repeatedly.
> 
We have been talking about soil temperatures and I would like to understand 
this issue. I understand the above statement, but in the past postings I was
assuming the soil temp needs to be a defined temperature. This is not the 
surface soil temp but the actual soil temp. If the process is zonal or base
temp control, what is the delta in air temp versus base temp?


-- 
Sincerely,  

------------------------------------ FROM: -----------------------------------
Duncan McAlpine  
Boeing Customer Services                                 Phone: (206) 544-9517
Airplane Maintenance & Repair Engineering                  FAX: (206) 544-8844 
            
EMAIL:  dm2477@lab3.ca.boeing.com                  Schedule: 6:00-2:30 M-F PST          
        duncan.g.mcalpine@boeing.com
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