In order to adjust the pH so that it falls into the recommended range for most vegetables, you should add reccommended amounts of

• A. Ground limestone
• B. Sulfur
• C. A complete fertilizer
• D. Wood ashes

Answer: (B)

Lowering soil pH to the range vegetables prefer is done by adding sulfur according to soil test recommendations. Elemental sulfur is oxidized by soil microbes to sulfuric acid, gradually increasing soil acidity and bringing pH down to the desired level. The amount you apply depends on your soil’s texture and buffering capacity, which is why a soil test guides the exact rate. Ground limestone and wood ashes raise pH, not lower it, so they’re not suitable for acidifying. A complete fertilizer supplies nutrients but does not reliably adjust pH on its own.