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Middle TN | Did you only see the first report? There are several more.
I usually apply around 200lbs of 0-0-60 for each corn, beans, and wheat. Soil samples are generally taken sometime after the crop is off, but before fall fertilize goes on. For alfalfa, I will put down between 400-600lbs 0-0-60, depending on the stand, etc.
I have found very few visual symptoms of K deficiency.
I have tissue tested my alfalfa several times, never finding a K deficiency. I'll attach a few tissue tests that go back a few years. You will notice the low Mg on the 03 and 05 tissue test that prompted me to seek an affordable Mg source.
Edited by TNalfalfa 11/29/2011 15:30
Attachments
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 Plant Tissue Test 2009 Jett.pdf (55KB - 49 downloads)
Plant Tissue Test 2009 Hill.pdf (55KB - 34 downloads)
Plant Tissue Test 2007.pdf (61KB - 66 downloads)
Plant Tissue Test 2005.pdf (88KB - 42 downloads)
Plant Tissue Test 2003.pdf (66KB - 37 downloads)
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dolimitic lime
