Imagine that. We are in total agreement. Good refs. I was citing material=
from Bandini and others who use it in things like Weed and Feed, etc. The=
60 -90 day figure was based on their testing not on reality. We had to st=
op our project because of the "perception" that ALL greenwaste was so taint=
ed even though there were no test to show similar results with the greenwas=
te we were using. These chemicals are the biggest threat to muni compostin=
g and grass composting overall as far as I am concerned.
By the way, have you figured out how to pronounce that stuff? I have heard=
it pronounced Clop - y - a - ral - id and clopy - ralid and clop - a - ral=
id and cl(aw)pralid and clo - pyr - alid. I finally went with cl(aw)p - ra=
lid but I still don't have a definitive pronounciation.
Ted Peterson
Earth-Wise/Spirit of the Earth
----- Original Message -----
From: tomjasz
To: compost_tea_at_yahoogroups.com
Sent: Monday, March 15, 2004 10:26 AM
Subject: Muni greenwaste (was Re: [compost_tea] Re: do meter????)
>
> So, when used at home and the clippings stay in the ground,
supposedly, they breakdown in 60 - 90 days. This, of course, assumes
that the soil biology hasen't been decimated through over feeding and
salts and ??? But this is rarely the case. In Washington, I read
where muni greenwaste operations had been suspended totally or that
the public could not buy greenwaste from the operations or the
greenwaste had to go to the landfill or a combination of the above
depending on municipality.
>
> Clopyralid is toxic at 1ppb according to the UW report.
>
> Ted Peterson
> Earth-Wise/Spirit of the Earth
http://www.mindfully.org/Pesticide/Clopyralid.htm
Depending on soil type and climate, clopyralid can persist up to 14
months in soil.
Sources: Pik, A.J. et al. 1977. Fate of 3,6-dichloropicolinic acid in
soils. J. Agric. Food Chem. 25:1054-1061.
Bovey, R.W. and C.W. Richardson. 1991. Dissipation of clopyralid and
picloram in soil and seep flow in the backlands of Texas. J. Environ.
Qual. 20:528-531.
Tanphiphat, K. and L.C. Burrill. 1987. Persistence of clopyralid in
soil. Proc. West. Soc. Weed Sci. 40:75.
Haderlie, L.C. and D.K. Harrington. 1988. Potato growth and symptoms
when grown in clopyralid soil residue. West. Soc. Weed Sci. Res.
Prog. Rep. Pp. 387-389
---------------------------------------------------------------------------=
---
Yahoo! Groups Links
a.. To visit your group on the web, go to:
http://groups.yahoo.com/group/compost_tea/
b.. To unsubscribe from this group, send an email to:
compost_tea-unsubscribe_at_yahoogroups.com
c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service=
.
Received on Mon Mar 15 2004 - 14:19:13 EST