GCEAgricultural ScienceSoil Science2024

The addition of lime to an acidic soil primarily serves to

AIncrease the nitrogen content of the soil
BImprove the water retention capacity of the soil
CRaise the pH and improve nutrient availabilityCORRECT
DIncrease the organic matter content of the soil
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Why the answer is C, and why the others tempt you.
Liming is the application of calcium-containing materials to neutralise soil acidity, thereby raising the soil pH. An increased pH improves the availability of most plant nutrients such as phosphorus, calcium, and magnesium, and reduces the toxicity of aluminium and manganese. Liming does not directly add nitrogen or organic matter to the soil.
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