Give three reasons why a high humus content is more beneficial than a high clay content, in a soil. - Leaving Cert Agricultural Science - Question g - 2007
Question g
Give three reasons why a high humus content is more beneficial than a high clay content, in a soil.
Worked Solution & Example Answer:Give three reasons why a high humus content is more beneficial than a high clay content, in a soil. - Leaving Cert Agricultural Science - Question g - 2007
Step 1
Humus is more fertile
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Answer
Humus contributes to soil fertility as it provides essential nutrients to plants. In contrast, high clay content can lead to lower fertility because clay may hold less available nutrients in comparison.
Step 2
Water retention
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Soils rich in humus are better at holding water compared to clay soils. This property helps in maintaining moisture levels, which is critical for plant growth. Clay, while it holds water, can also become waterlogged, leading to reduced oxygen availability for roots.
Step 3
Improved soil structure
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Answer
Humus enhances soil structure by promoting the aggregation of soil particles. This leads to better aeration and root penetration. On the other hand, high clay content can result in compacted soils, which restrict root growth and reduce overall soil health.
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