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 Little River, TX | 10 lbs/ each mea/100g of CEC is a reasonable rule of thumb.
Possibly a little optimistic for some soils but understated for the soils I can see out my back window.
The nitrogen from an over application of 1,500 lbs/A of anhydrous ammonia, persisted through 7 full seasons in a grass hay meadow.
This on a soil with a measured 50 CEC.
Go 200 miles east of Here and nitrogen will run out in three weeks, regardless of the amount applied. Theirs is deep sand.
There is a universal truth hidden in there, somewhere.
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