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 Post subject: Nitrogen
PostPosted: Tue Sep 07, 2004 11:44 pm 
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Location: San Antonio
I use organic but would like to know about Ammonium Sulfate.
I realize it is only nitrogen and absent of most other food and only last a few weeks.

So what is the bad side of using it for a quick greening.

Thanks,

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 Post subject:
PostPosted: Wed Sep 08, 2004 10:59 pm 
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No it is not only nitrogen. Look again. It has sulfur. That sulfur becomes sulfuric acid which is well known for changing the pH of your soil. Not only that but sulfur is a non selective fungicide. This means that you can expect a die off of your soil's most important microbes, the fungi.

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 Post subject:
PostPosted: Sat Sep 11, 2004 11:01 am 
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Thanks,
I saw the sulfur, but I have very alk soil with a ton of limestone just inches under the surface.

So I was thinking the sulfer may actually help....??

Also I put down corn meal three times a year. Does that help.

Jim

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PostPosted: Sun Sep 12, 2004 10:11 pm 
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Am I getting the impression that you don't have an all-round green all the time with three apps of corn meal? I apply corn meal four times a year and still there are times when the entire yard turns yellow and WILL NOT change to green until next season no matter how much organic fertilizer I apply. This is always (in my case) caused by several inches of rainfall all at once. The flood of water washes the organic acids out of the root zone of the soil. When that happens, the iron in the surface binds to the calcium particles which were always there but were prevented from binding by the organic acids.

The organic solution to this mid-summer yellowing is greensand (glauconite). I'm not sure of the entire chemical reaction but the glauconite apparently gives the calcium a handier place to bond and frees the iron back to the plants. This could be a pH thing - I really don't know. It takes 3 weeks for the glauconite to go to work. You can prevent the yellowing altogether by applying the greensand at the end of the week long rainstorm when you realize you got way too much water. If you do this I can almost guarantee you will have the greenest lawn in the neighborhood, by far!

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 Post subject:
PostPosted: Wed Sep 15, 2004 10:10 pm 
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Dchall_San_Antonio wrote:
That sulfur becomes sulfuric acid which is well known for changing the pH of your soil. Not only that but sulfur is a non selective fungicide. This means that you can expect a die off of your soil's most important microbes, the fungi.


I wonder if this is why people often have tree problems after hiring a lawn treatment service. I've read of many cases on other forums where immediately following a chemical lawn treatment, the health of the trees diminishes rapidly but nobody ever suggests why.

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 Post subject: Drugs in Grass
PostPosted: Wed Sep 15, 2004 11:33 pm 
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If you're talking about traditional chemical programs, it's more likely the herbicidal properties of the "weed & feed" or actual herbicides they apply. These chemicals almost always attack the roots of the trees beneath the turf to which they've been applied. They don't like that, for some reason...

And people PAY MONEY for this? :shock: :roll:

Kathe


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 Post subject:
PostPosted: Mon Sep 20, 2004 11:40 pm 
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I agree with Kathe on that. My neighborhood has at least two yards where the live oaks are nearly dead in just a few years. The canopy is probably 10% of the density as the neighbors' trees across the fence and street. The leaves are misshapen and awful looking.

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