FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Why does a soil that has only sand and gravel not support plant growth well?
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It holds in too much water
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it holds in too little water
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it has too many decomposers
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it has too many minerals
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Explanation:
Detailed explanation-1: -Sandy soil loses water at a high rate leading to a low level of water retention that is unsuitable for plant growth.
Detailed explanation-2: -Because sandy soils have large particles, they dry out quickly, are often low in nutrients and acidic. Both water and fertilizer have a tendency to leach out of the soil-escaping to waterways before the plant can utilize them.
Detailed explanation-3: -Compared to other soil textures, sand has low surface area and low charge, and hence, does not attract and retain water or nutrients. Due to this quality, sand freely drains and is typically nutrient poor.
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