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#1
08-25-2011, 10:26 AM
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Dimension on new seed
How soon can you treat new grass that you might seed this fall or next spring to prevent crabgrass in the same season?
The label is always right, (but it may be too conservative). As a preliminary test, I applied Dimension (Shaws 23-0-8 with 0.13% dithiopyr) on seed that was planted August 9th 2011. Grass seedlings were about 2 inches tall, and they were 9 days old, (Scotts "High Traffic" seed). I counted the pellets in a sample and used 14 pellets per flower pot as an estimate of 4 pounds per thousand sqft. The result was: the seedlings were not killed, but slightly stunted. I will have more information later. 
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#2
08-25-2011, 10:37 AM
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The label is always the law, but it is ALWAYS conservative!
I think this test will depend more on soil moisture and growing conditions.
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#3
08-25-2011, 06:45 PM
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Stunting new seedlings is never a good idea, unless of course it is necessary...
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* Water/air ratio in relation to water flow to/from any plantlife is a Basic Fundamental Concept in understanding seed germination as much as transplanting a 20' Maple tree in 90 degree weather... *
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#4
08-25-2011, 07:06 PM
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interesting riggle,
but i have to ? conservative, especially after the imprelis issue this year i guess there really is no substitute for 1st hand experience i have some tenacity trials on seedlings at my house i should post, but will save for another thread
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