I wouldn't sterilise peat, the discussion was about sterilising loam, but i wouldn't do that either.
I agree on both counts
Whats the analysis on the potting base? Most commercial composts use an 8-12-8 base fert, but you also need lime at about 4kg/cum
I don't have a box at hand with the anaysis on but the sales blurb is as follows;" These are designed to make mixing home composts as easy as possible.
The growing medium of peat is ideal for most plants but contains virtually no nutrients.
Chempak bases provide major nutrients, trace elements and when required lime!"
They do four base mixtures namely;
Seed Base, Potting Base, Multi-purpose base and Ericaceous base..
I stopped using it a couple of years back when T&M took Chempak over and doubled the price of it!
Then I found it was costing me as much to mix my own as buy it ready mixed.
I found before this event I could mix my own for half the price of purchasing a bag of potting compost and I had full control of the quality. e.g. I riddled/seived the peat for seed base and removed any tufts or sticks from the peat for potting compost and this worked well.
This last couple of years which is well documented here on A4A I have had loads of problems with purchased potting compost so I will be reverting back to Chempak next year.
I usually deal with wholesalers but T&M have made this a bit of a 'closed shop' now so there are not so many wholesale suppliers around any more.
I am going to Harrogate show in a couple of weeks time so I will buy some there, at the spring show they were selling 12 boxes (a case) for £25 which is much cheaper than single box purchase of around £3-50 to £4-00 a box.
Does that answer your query Lincs?