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Re: [compost_tea] colloidal clay and rock phosphate



Jeff Lowenfels wrote:
> I know that rock phosphates are good for fungal growth.  My question is 
> whether to use the granular rock phosphate or the powdered stuff which 
> is mixed in with colloidal clay?  Anyone had any experience here?

1) Tennessee rock phosphate - slightly granular - best - is available (Blount Feeds, Bethel, NC - Bill Blount) - P released
    quicker than Idaho rock phosphate and Florida RP

2) Idaho black rock phosphate - granular, OK - can be had in pelletized form with adidifier for more rapid breakdown - small quantities
    available by mail order

3) Florida rock phosphate & Florida soft phosphate with colloidal clay - both are very fine powder but still takes longer than
    any other naturally-occuring phosphate to break down and release P - readily available by mail order

4) Carolina Black Rock Phosphate - not available - granular - is the very best of all, more P and released quicker

You might be interested in the archives on composting and compost tea I am putting together in the Agriculture Wiki:
AgWiki - Agriculture Wiki
http://www.ibiblio.org/ecolandtech/agwiki/index.php/HomePage

COMPOST, COMPOST TEA and SOILFOODWEB
http://www.ibiblio.org/ecolandtech/agwiki/index.php/COMPOST%2C%20COMPOST%20TEA%20and%20SOILFOODWEB

sanet-mg list discussion on compost, compost tea and the soil food web by
Elaine Ingham, Gil Carandang and Steve Diver:
http://www.ibiblio.org/ecolandtech/agriculture/composting/compost+soilfoodweb+links+info2/index.html

LL
-- 
L.F.London
lfl@intrex.net
http://market-farming.com
http://www.ibiblio.org/ecolandtech



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