The graph shows the growth of grass in kg/ha for the months February to November 2021 - Leaving Cert Agricultural Science - Question 16 - 2022
Question 16
The graph shows the growth of grass in kg/ha for the months February to November 2021.
(a)
(i) Identify the month most suitable to make 1st cut silage and give a re... show full transcript
Worked Solution & Example Answer:The graph shows the growth of grass in kg/ha for the months February to November 2021 - Leaving Cert Agricultural Science - Question 16 - 2022
Step 1
Identify the month most suitable to make 1st cut silage and give a reason for your answer.
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Answer
Month: May or June
Reason: The peak yield of grass occurs when the plant is in its leafy stage (vegetative stage), making it very digestible.
Step 2
Shade onto the graph the portion which represents the excess grass in summer months.
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Answer
Shaded area between the continuous blue line and orange dashed line.
Step 3
Explain why a line graph is the most suitable way to present this data.
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Line graphs are effective for tracking changes over short or long periods of time. When smaller changes exist, line graphs can better illustrate trends than bar graphs. They also allow for comparison across different periods.
Step 4
Excess grass is produced during the summer months; this grass can be conserved as hay or silage. Explain the underlined term.
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Grass that has been dried or fermented (in order to feed at a later stage).
Step 5
List three weather conditions essential for the production of top-quality hay.
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Sunny
Warm
Windy (dry low humidity)
Step 6
Describe four steps involved in the production of hay.
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Fertilize grass (minimum 6 weeks prior).
Cut at correct stage (vegetative or inflorescence stage).
Rake using a rower until completely dehydrated.
Bale and move to storage shed.
Step 7
Identify the ideal moisture content of hay at time of storage.
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Answer
18%.
Step 8
Identify each of the plants A and B.
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Answer
A: Ragwort
B: Plantain or Ribwort
Step 9
State one impact plant A has on farming or the environment.
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Noxious plant (harmful to animals) / competes with crops / supports many species of wildlife (biodiversity).
Step 10
Identify each of the following plants commonly found on Irish farms.
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C: Thistle
D: Oats (wild).
Step 11
State one use for plant D.
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Animal feed / human consumption.
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