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    Question

    Crusting is a serious constraint to seed emergence

    in
    A Alfisols Correct Answer Incorrect Answer
    B Vertisols Correct Answer Incorrect Answer
    C Red soil Correct Answer Incorrect Answer
    D Both a & c Correct Answer Incorrect Answer

    Solution

    Soil crusts are dry, thin, and hard soil surface layers that develop due to the action of raindrops or irrigation water. The crust has high bulk density, lower macro,-porosity, and higher mechanical strength.  Crusting is a serious problem in Alfisols /red soils

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