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  • From: "Peg Cook" <pegcook AT northnet.org>
  • To: "market farming" <market-farming AT franklin.oit.unc.edu>
  • Subject: Re: S & pH
  • Date: Fri, 7 Apr 2000 15:56:41 -0400


Bill,
Does your reference say whether that recommendation is for incorporation
within a 6-inch profile? If it doesn't specify that, you may want to up the
rate by 50 lbs.

Peg Cook, Agronomist
Cook's Consulting

pegcook AT northnet.org

----- Original Message -----
From: Bill Shoemaker <wshoemak AT inil.com>
To: market farming <market-farming AT franklin.oit.unc.edu>
Sent: Friday, April 07, 2000 3:12 PM
Subject: Re: S & pH


> To bring the pH of a sandy loam up from 6.0 to 6.5 requires approximately
> 1400 lb/acre of common limestone (95% CaCO3). To acidify a similar soil
from
> 7.0 to 6.5 would only require about 100 lb/acre of elemental sulfur. This
is
> referenced from Knott's Handbook for Vegetable Growers, third addition.
>
> -----Original Message-----
> From: Peter Worsley <pwors AT svn.net>
> To: market farming <market-farming AT franklin.oit.unc.edu>
> Date: Friday, April 07, 2000 1:26 PM
> Subject: Re: S & pH
>
>
> >Alan Brant wrote:
> >>
> >> Can somebody tell me what quantity of Sulfur is needed to
affect
> pH
> >> significantly? I know it would vary, but are we talking about
quantities
> >> akin to lime? Can we hear an example e.g. on a silt loam, to lower pH
> >> from 6.5 to 6?
> >
> >I, too, am curious about this. I'd like to lower PH from 7.2 to 6.8 on
> >sandy silt loam, for mixed vegetable production, including potatoes.
> >Thanks- Peter
> >
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