The following diagrams show two grazing systems used in Ireland - Leaving Cert Agricultural Science - Question a - 2010
Question a
The following diagrams show two grazing systems used in Ireland.
Grazing System A:
Movable Electric Fence
Grazing System B:
Permanent Fencing
(i) Identify each ... show full transcript
Worked Solution & Example Answer:The following diagrams show two grazing systems used in Ireland - Leaving Cert Agricultural Science - Question a - 2010
Step 1
Identify each grazing system.
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Answer
Grazing System A: Strip Grazing
Grazing System B: Paddock Grazing
Step 2
Explain how each of the grazing systems works.
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Answer
Strip Grazing: This system involves dividing land into strips with movable electric fencing. Cattle are moved to graze one strip while the other is allowed to rest and regrow, optimizing pasture utilization.
Paddock Grazing: In this system, the land is divided into smaller paddocks. Cattle are rotated between these paddocks daily, which allows for rest and regrowth of previously grazed areas.
Step 3
State one advantage and one disadvantage of each of the grazing systems named.
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Strip Grazing:
Advantage: Maximizes the growth potential of grass since pasture is rested.
Disadvantage: High labor requirement to move the fence and cattle.
Paddock Grazing:
Advantage: Allows consistent access to fresh grass every day.
Disadvantage: Can require significant labor to create and maintain multiple paddocks.
Step 4
Name one other system of grazing you have studied.
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Stocking rate or block grazing.
Step 5
Name one grass and one other plant species suitable for good quality grazing for livestock.
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Perennial ryegrass and clover.
Step 6
Give a reason for the use of each of the named species.
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Perennial ryegrass is highly productive with good palatability, making it suitable for livestock. Clover is rich in protein, improves nitrogen fixation, and enhances soil health.
Step 7
Describe one method of sowing a field for pasture.
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Direct drilling: Seeds are sown directly into undisturbed soil using a seed drill, which minimizes soil disruption and helps retain moisture.
Step 8
Explain each of the underlined terms.
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Answer
Tillering: The process by which grass plants produce additional shoots, enhancing biomass and improving pasture density.
Topping: Cutting back tall grass to prevent flowering and encourage regrowth, also reducing weed competition.
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