[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [compost_tea] triple superphosphate and roses
Chris-
The
main detriment is to soil chemistry, which eventual impacts soil
biology.
Triple
super phosphate, 0-46-0, is made by treating rock phosphate with phosphoric
acid, and this highly acidulated form becomes complexed or tied up
rapidly in most soils. Super phosphate can
tie up zinc, iron, and manganese. Below about
pH 6 phosphorus can become complexed with aluminum, and above pH
7 calcium. This is why a good organic system is critical...it
acts as a buffer, but also provides the necessary microbes (mycorrhizae) to make
this recalcitrant element plant available.
Soft
rock phosphate is the choice of most organic gardeners. The
ammoniated phosphates (MAP [preferable], DAP) are easy on soil biology and have
good energy.
Tim
Kiphart
-----Original Message-----
From: chris reid
[mailto:reidchris@earthlink.net]
Sent: Thursday, July 24, 2003 9:03
AM
To: compost_tea@yahoogroups.com
Subject: [compost_tea]
triple superphosphate and roses
In looking at Rose Tone fertilizer (Espoma) product label,
I see 6 per cent
available phosphorus in the form of P2-05, and in the
ingredients, triple
super phosphate is listed.
http://www.espoma.com/default.asp?strPage=productinfo&intCategoryID=4&id=26
If
triple super phosphate is supposed to harm soil biology, then this
organic
rose fertilizer may not be the best thing to use in conjunction
with
efforts to build a balanced soil. Hmmm.
Sounds like I
need to look for something else to use. What exactly is the
effect of
this type of phosphorus on the soil and what type of phosphorus is
okay to
use?
thanks,
Chris Reid
To
unsubscribe from this group, send an email
to:
compost_tea-unsubscribe@yahoogroups.com
Your
use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
Yahoo! Groups Sponsor |
ADVERTISEMENT
![click here]() | |
![]() |
To unsubscribe from this group, send an email to:
compost_tea-unsubscribe@yahoogroups.com
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.