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For each part of this protocol, start with a clump of soil or a soil ped

(With Structure). Granular. Blocky. Prismatic. Columnar. Platy. Soil Structure. Columnar structure occurs in dry, desert soils with high sodium content. Single Grained. Massive. Soil Structure (continued). Without Structure. Pencil is 19 cm. . Soil Color. Munsell Notation. . . Hue. . Value. . Chroma.

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For each part of this protocol, start with a clump of soil or a soil ped

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    5. Munsell Notation The Munsell code below each color in the GLOBE color chart is a universal notation that describes the soils’ color. The first set of number and letter symbols represents the hue. Hue represents the position of the color on the color wheel (Y=Yellow, R=Red, G=Green, B=Blue, YR=Yellow Red, RY=Red Yellow). Munsell Notation The Munsell code below each color in the GLOBE color chart is a universal notation that describes the soils’ color. The first set of number and letter symbols represents the hue. Hue represents the position of the color on the color wheel (Y=Yellow, R=Red, G=Green, B=Blue, YR=Yellow Red, RY=Red Yellow).

    12. F The way a soil “feels” is called the soil texture. F Soil texture depends on the amount of each size of particle in the soil. F Sand, silt, and clay are names that describe the size of individual particles in the soil. Sand are the largest particles and they feel “gritty.” Silt are medium sized, and they feel soft, silky or “floury.” Clay are the smallest sized particles, and they feel “sticky” and they are hard to squeeze. F The way a soil “feels” is called the soil texture. F Soil texture depends on the amount of each size of particle in the soil. F Sand, silt, and clay are names that describe the size of individual particles in the soil. Sand are the largest particles and they feel “gritty.” Silt are medium sized, and they feel soft, silky or “floury.” Clay are the smallest sized particles, and they feel “sticky” and they are hard to squeeze.

    17. Horizon Properties

    18. Free carbonates are compounds that coat soil particles. They form under certain conditions such as in dry climates where the pH is above 7. They are also found in some soil profiles that have parent materials made of carbonates (such as limestone). This test is performed by squirting vinegar on the soil. If free carbonates are present, they will “effervesce” or bubble when the vinegar reacts with them. Record one of the following based on your observation: None: you observe no reaction (the soil has no free carbonates). Slight: you observe a slight amount of bubbling (the soil is coated with some carbonates). Strong: you observe a strong reaction (many bubbles) (the soil has many carbonate coatings present). Free carbonates are compounds that coat soil particles. They form under certain conditions such as in dry climates where the pH is above 7. They are also found in some soil profiles that have parent materials made of carbonates (such as limestone). This test is performed by squirting vinegar on the soil. If free carbonates are present, they will “effervesce” or bubble when the vinegar reacts with them. Record one of the following based on your observation: None: you observe no reaction (the soil has no free carbonates). Slight: you observe a slight amount of bubbling (the soil is coated with some carbonates). Strong: you observe a strong reaction (many bubbles) (the soil has many carbonate coatings present).

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