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Medicine Mound,TX | Are we being sold fertilizer we don't need? How do you know?
I always believed you should replace what you haul away because, it made logical sense. I have seen some things in the last couple of decades, that don't seem to correspond with that train of thought.
Over the past 20+ years I have farmed this irrigated farm. I have never applied potassium, because it has always been high on soil test. It was cotton on cotton as long as can remember growing up. It was alfalfa from 1998-2008 and has been in a cotton grain rotation since then, the grain has changed between wheat, corn and milo. I didn't do the math but seems I would have mined the soil to 0 K. It is showing more ppm K now than it back then by quite a bit. I will attach a soil test from 2010 and one from this year 2024. 2010 was the oldest one I could find in my file cabinet.
What are your thoughts on this? Have we been sold a false story or is this soil just odd, and replacement values work other places?
Edited by tmgsssn 2/16/2024 11:41
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Fertilizer removal rates? Do we need to replace it?
