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  #1  
Old 06-17-2013, 11:31 PM
clayslandscape clayslandscape is offline
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potassium help lawn blight?

Does potassium help blight in a lawn? I have a customer that has it bad and had heard potassium would help. If that is the case, where could I get it and how to apply
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Old 06-18-2013, 01:33 AM
44DCNF 44DCNF is offline
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A kelp concentrate with sulfate of potash should help.

One example-Aggrand. http://www.aggrand.com/Store/Products/kelp.aspx

Mix and spray or use hose end sprayer. It will strengthen the turf and allow it to fend for itself against disease and insect attacks. Not so much attacking the blight itself, but by assisting in building the turfs immunity against it.
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Old 06-18-2013, 09:20 AM
Smallaxe Smallaxe is offline
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What is the client doing to his lawn that makes it susceptible to whatever type of blight you are experiencing???
Does the whole neighborhood have it becuz of the wether? OR does it only infect his area??

Eliminate the cause before looking for a cure...
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Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage
,,, I wonder what does...
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  #4  
Old 06-18-2013, 10:20 AM
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RigglePLC RigglePLC is online now
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Blight? Exactly what kind of disease does it have? What kind of grass?
Are we talking brown patch on tall fescue?
I am sure you already know this but take a look at university information...
http://www.turffiles.ncsu.edu/Diseases/Brown_Patch.aspx

Fungicide is best, but...
I doubt that it would help much--but potassium is available as muriate of potash 0-0-62, at any farm elevator. Apply as dry, but it has a high burn potential. Or apply as liquid dissolved in water; don't burn the grass; no more than 50 pounds in 200 gallons of water.

Or perhaps a high potash formula like Everris Osmocote Bloom 12-7-18--premium type--and price.

In the long haul, an over seed with a higher quality more disease-resistant grass is probably the best bet.
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  #5  
Old 06-18-2013, 06:01 PM
clayslandscape clayslandscape is offline
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potassium help lawn blight?

She has been simply over fertilizing. So now she calls be to help out.
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  #6  
Old 06-19-2013, 10:15 AM
Smallaxe Smallaxe is offline
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So many times the turf would be better off if people just left it alone,,, instead of doing everything under the sun to make it better... if she's over-fertilized,,, she's probably over-watered too and her soil doesn't breathe at all...
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Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage
,,, I wonder what does...
*
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  #7  
Old 06-21-2013, 02:12 AM
Skipster Skipster is offline
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I hear a lot of things like this all the time. Fert salesmen and people who don't know any better refer to K as the "stress nutrient." But, no research has ever supported that notion. Most research involving K and stress report that when K is not deficient in the soil, plants tolerate stress better than when K is deficient. They go on to say that adding K when soil test K is not deficient does not improve stress tolerance.

So, if you want to be sure, test your soil and see where the K levels are. If they are deficient, you might benefit from K applications. If they aren't deficient, adding more K won't help you.
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  #8  
Old 06-21-2013, 07:38 PM
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phasthound phasthound is offline
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Skipster,

This is an excellent point. It is so fundamental to sound turf care and is commonly overlooked.
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  #9  
Old 06-22-2013, 08:29 AM
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lilmarvin4064 lilmarvin4064 is offline
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I agree with the last 2 posters. However -

You can reduce Pythium blight pressure with a spray application of potassium phosphite due to the increased production of phytoalexins.
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  #10  
Old 06-22-2013, 09:59 AM
Smallaxe Smallaxe is offline
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Quote:
Originally Posted by lilmarvin4064 View Post
I agree with the last 2 posters. However -

You can reduce Pythium blight pressure with a spray application of potassium phosphite due to the increased production of phytoalexins.
Please expound... I'm not sure that I'm following your point...
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