re: Soil test showed “Very High” in just about every element!

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i would think you would still want to add Nitrogen fertilizer unless that was high also

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That's not even possible unless he had it planted with a legume.

Nitrogen is the most ephemeral macronutrient that is applied to soil. Anyone telling you they are getting an accurate soil nitrogen reading from a standard soil test doesn't know what they are talking about. (If you notice, a standard LSU soil test NEVER shows nitrogen levels)

That is unless you've killed every living organism in your soil. Then MAYBE it would last alittle while.

Outside of legumes and a few other plants, nitrogen is almost always needed.