Rebalancing Soil High in Phosphates, Potassium, and Magnesium

Question: Soil test shows high phosphates, K, Mg; low nitrogen; pH 7.4. Sandy soil in East TX. Planning to mulch with pine bark. How to rebalance?

Step-by-Step Plan

1. Lower pH to ~6.5 with sulfur or aluminum sulfate (label rates), retest in 30 days.
2. Fertilize with nitrate of soda at 1 lb per 150-200 sq ft every 30-45 days until fall. For organic, use blood meal at label rates.
3. Spread 1 inch compost, leaf mold, or finely ground pine bark; till into top 3-4 inches.
4. After planting, mulch with pine mulch.

May take a couple years before needing more than nitrogen and compost.