[AT] Sap is rising/ bluestone

[Ralph Goff]

Seems to me copper sulfate is what we used to call "bluestone"? Dad used to 
buy it in bags and we'd use it to treat poplar pickets for fencing.
Cut the green pickets , peel off the bark, sharpen them and set them in a 
concrete pit made for this purpose. Filled with water and a good amount
of the bluestone powder mixed into the water. After a few days you could see 
the blueish or green tinge working it's way up the pickets as they
absorbed the water. Didn't always work perfect but when it did work , a good 
bluestone treated picket would outlast a store bought pressure
treated picket by years.

Ralph in Sask.
----- Original Message ----- 
From: "Mogrits" <mogrits at gmail.com>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Monday, March 16, 2009 9:07 AM
Subject: Re: [AT] Sap is rising/good news and bad


Copper sulfate is a blue powder that can be applied to ponds to
control aquatic weeds. It does not color the water- it is a straight
out poison to the weeds. There may be a dye I'm not aware of that
might coincidentally be blue. We fertilize ponds to promote a healthy
green algae bloom that blocks sunlight to the bottom, stunting the
growth of weeds, but that turns the water a bright green.

Copper sulfate is definitely toxic to plants.

Warren

On Mon, Mar 16, 2009 at 9:34 AM, charliehill <charliehill at embarqmail.com> 
wrote:
> I'm not sure how the copper sulfate works but there is a dye available for
> ponds that basically shades out the grass. I can't tell you the name of 
> it.
> Contact the County Ag agent in your county. You don't have to be a farmer
> to talk to them.
>
> Charlie
> ----- Original Message -----
> From: "Len Rugen" <rugenl at yahoo.com>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Monday, March 16, 2009 9:22 AM
> Subject: Re: [AT] Sap is rising/good news and bad
>
>
>> Isn't that also used in septic systems to stop roots?
>>
>> If so, it's not the light.....
>>
>> Mark Greer wrote:
>>> It is my understanding that copper sulfate is used in ponds to prevent
>>> algae
>>> and does so by coloring the water and depriving the algae of light. I
>>> don't
>>> think it actually kills the algae from a toxic reaction to the copper
>>> sulfate. You've probably noticed some farm ponds with blue water that is
>>> a
>>> bit un-natural looking but very clean of weeds & algae. There are
>>> chemicals
>>> that do kill aquatic weeds like Round-Up does on land. I think the
>>> aquatic
>>> version of Round-Up is called Rodeo or something like that.
>>> Mark

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