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Soil Color and Its Indications

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White Soil

Presence of salts or high sand content

Yellow Soil

Hydrated iron oxides

Blue-Green Soil

Reduced iron due to waterlogged conditions

Black or Dark Brown Soil

High organic matter content

Red Soil

Presence of iron oxides

Mottled Soil

Variable drainage and oxidation conditions

Brown Soil

Decomposed organic matter and good aeration

Gray Soil

Poor drainage, possible presence of aluminum or manganese

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