Types of Soils and Soil Horizons
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Questions and Answers

Which Roman numeral indicates soils with few limitations that only require good soil management practices?

  • I (correct)
  • III
  • II
  • IV

    • What is the appropriate conservation practice necessary for Class II soils?

  • Very careful management
  • No conservation practices required
  • Moderate conservation practices (correct)
  • Intensive conservation practices

    • Which capability class indicates very severe limitations that require very careful management or perennial vegetation?

  • IV (correct)
  • II
  • III
  • I

    • What type of land use is classified under Capability Class V?

    <p>Woodland</p> Signup and view all the answers

    Which subclass indicates soil groups within a capability class?

    <p>Capability subclass</p> Signup and view all the answers

    What is the primary method suggested for correcting sodic soils in the text?

    <p>Applying gypsum and growing sodic tolerant crops</p> Signup and view all the answers

    What does 'Leached' refer to in the context of soil management?

    <p>Certain elements washed out of the soil</p> Signup and view all the answers

    Which soil particle is the largest in size?

    <p>Sand</p> Signup and view all the answers

    What does 'Residual Soil' refer to in the context of soil classification?

    <p>Parent material formed in place</p> Signup and view all the answers

    What is the significance of 'Capability Class' in soil management?

    <p>Indicating the most intensive but safe land use</p> Signup and view all the answers

    What does 'Colluvial Deposit' describe in relation to soil formation?

    <p>Soils deposited by gravity</p> Signup and view all the answers

    What is the main characteristic of the O horizon in soil?

    <p>Consists of organic matter</p> Signup and view all the answers

    What is the function of 'Topsoil' in supporting plant growth?

    <p>Desirable proportion of plant nutrients, chemicals, and living organisms located near the surface</p> Signup and view all the answers

    Which soil horizon is generally referred to as subsoil?

    <p>B horizon</p> Signup and view all the answers

    Which capability subclass is mainly limited by the risk of erosion?

    <p>e - Erosion</p> Signup and view all the answers

    What is the main characteristic of the topsoil in soil?

    <p>Supports good plant growth</p> Signup and view all the answers

    What is the main characteristic of deep soils compared to shallow soils?

    <p>Higher yields</p> Signup and view all the answers

    In which capability class are soils unsuitable for cultivation due to very severe limitations?

    <p>Class VII</p> Signup and view all the answers

    Which class indicates that soils nearly prevent their use for commercial plants?

    <p>Class VIII</p> Signup and view all the answers

    What is the significance of the C horizon in soil?

    <p>Important for storing and releasing water</p> Signup and view all the answers

    What is the main limitation of capability subclass c?

    <p>Shallow, droughty or stony soil</p> Signup and view all the answers

    What is the primary function of subsoil in soil composition?

    <p>Consists of large chunky soil structure</p> Signup and view all the answers

    Which class is best suited for wildlife and recreation?

    <p>Class VIII</p> Signup and view all the answers

    Which land classification has moderate restrictions for cultivation, hay, and woodland?

    <p>Class VI</p> Signup and view all the answers

    What percentage of the soil composition consists of solids?

    <p>50%</p> Signup and view all the answers

    Which type of soil particles is the smallest in size?

    <p>Clay</p> Signup and view all the answers

    What is the main benefit of organic matter in soil?

    <p>Supplies nitrogen and nutrients to plants</p> Signup and view all the answers

    What is the texture of fine-textured (clay) soil when dry?

    <p>Forms very hard lumps or clods</p> Signup and view all the answers

    Which type of soil forms aggregates mainly held together by organic matter?

    <p>Clay soil</p> Signup and view all the answers

    What type of deposits are soils that are transported by streams called?

    <p>Alluvial deposits</p> Signup and view all the answers

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