Planting & SoilPregunta 28 de 100
To lower the pH of an alkaline soil, which amendment is commonly used?
a.Agricultural lime
b.Wood ash
c.Gypsum for pH change
d.Elemental sulfur
Explicación
Elemental sulfur is oxidized by soil bacteria into sulfuric acid, gradually lowering soil pH over weeks to months. Lime and wood ash raise pH, and gypsum changes soil structure and adds calcium without significantly changing pH. Sulfur is the standard choice to acidify alkaline soils.
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