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A farmer has recently purchased a farm and intends to grow tillage crops on it - Leaving Cert Agricultural Science - Question 8 - 2008
Question 8
A farmer has recently purchased a farm and intends to grow tillage crops on it. (i) Outline four soil characteristics which would determine the suitability of the s... show full transcript
Worked Solution & Example Answer:A farmer has recently purchased a farm and intends to grow tillage crops on it - Leaving Cert Agricultural Science - Question 8 - 2008
Step 1
Outline four soil characteristics which would determine the suitability of the soil for tillage.
Answer
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Soil Texture: The proportion of sand, silt, and clay in the soil which affects water retention and drainage.
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Soil Drainage: The ability of the soil to allow excess water to flow away, preventing waterlogging.
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Soil pH: The acidity or alkalinity of the soil, influencing nutrient availability for crops.
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Organic Matter: The presence of decomposed materials that enhance soil fertility and structure.
Step 2
how it might be measured.
Answer
Soil texture can be measured using a method known as the "feel test" or through laboratory analysis where soil samples are separated by size (sand, silt, clay). Soil pH can be measured with a pH meter or pH test kit, while organic matter content is typically measured by the loss-on-ignition method.
Step 3
how it might influence the growth of a named tillage crop.
Answer
For example, soil texture affects barley growth as barley prefers well-drained, loamy soils. Poor drainage due to clayey textures can lead to water retention, which might promote root rot and negatively affect barley yield. The ideal pH for barley is around 6.0 to 7.0, which enables optimal nutrient uptake.