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N FLA | It might be valuable to share what these P levels are, I think some labs will call for 60 lbs maintenance every time until you buildup to very high. For example my soil test is in the high range according to the lab, VH according to the university, and they recommend 60 lbs P. Additionally, I have high P levels 3 feet down. They mine P not far from here. All I'm saying is you have to take the recommendation with a grain of salt. You asked where is the P going, and it might be building if they're rec went from 75 to 60.
Are you growing corn on corn? We take a yield hit here even with irrigation and fertigation. | |
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Ed Winkle, soil sample question...
