Garden Guides | When to Apply Super Phosphate to a Garden
To band super phosphate, avoid placing super phosphate in seed rows. Instead, open a furrow adjacent to the seeding or planting row. For rows that will be seeded, make the furrow 3 inches deep. For transplants, make furrows 6 inches deep. Distribute 1/2 cup of super phosphate for every 10 feet of row, according to Texas A&M University Extension.
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