HORTICULTURE SCIENCE
FUNDAMENTALS OF HORTICULTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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clayey soil
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decayed organic matter
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vermiculite
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volcanic rock
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Detailed explanation-1: -Traditional organic materials such as Sphagnum peat moss, softwood bark (Image 1), coir (Image 2), perlite (Image 3), vermiculite (Image 4), expanded clays, etc., have been and continue to be used to create predictable, consistent growing media from year to year.
Detailed explanation-2: -Most soil organic matter originates from plant tissue. Plant residues contain 60-90 percent moisture. The remaining dry matter consists of carbon (C), oxygen, hydrogen (H) and small amounts of sulphur (S), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca) and magnesium (Mg).
Detailed explanation-3: -The organic matter in the soil comes from the decay of dead plants and animals. Earthworms, bacteria and fungi are just a few of the organisms that live in the soil, feed on the organic matter and decay or recycle plant nutrients.