[AT] Sap is rising/good news and bad

[charliehill]

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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