CULT: ammonium sulphate as a weed killer
- Subject: CULT: ammonium sulphate as a weed killer
- From: v* l*
- Date: Sun, 8 Apr 2001 05:39:02 -0700 (PDT)
--- Robert Miles <milesrf@mindspring.com> wrote:
> I found the following in the Mallorn archives:
>
> --- In iris-talk@y..., "Mike Sutton" <suttons@l...>
> wrote:
> > For anyone who is interested we have just finished a
> weed control
> test. Using 1.5 pounds of Ammonium Sulfate (a common
> fertilizer) to
> 1 gallon of warm water. The solution killed all weeds
> sprouts under
> 1" tall and severly burned weeds between 1" and 2".
> Established iris
> were not affected. Bloom season will tell if the flowers
> were
> affected. (highly doubt it). Nice alternative to weed
> killers.
> > Mike Sutton
> > Porterville, CA USA
> > USDA zone 8b
>
> How much area does one recipe of this mixture cover?
>
> Was it tried on TB, or only other types of iris?
>
> Has anyone seen problems from doing this on TB?
>
>
V. sez:
I'd be careful doing this. Ammonium sulfate solution
will be acidic. The Sutton's irises may be able to handle
it because their base soil pH is high (10, if I remember),
but most garden soils are around 6. Adding a large amount
of ammonium sulfate would drop it even more.
=====
Vince Lewonski
vincelewonski@yahoo.com
Secane, Pennsylvania, USA Zone 6b
"Things are getting worse but I feel a lot better..."
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