The Department of Agriculture Food and the Marine (DAFM) produce a recommended list of perennial ryegrass seed varieties annually - Leaving Cert Agricultural Science - Question 18 - 2022
Question 18
The Department of Agriculture Food and the Marine (DAFM) produce a recommended list of perennial ryegrass seed varieties annually.
Analyse the data in the table and... show full transcript
Worked Solution & Example Answer:The Department of Agriculture Food and the Marine (DAFM) produce a recommended list of perennial ryegrass seed varieties annually - Leaving Cert Agricultural Science - Question 18 - 2022
Step 1
List three physical traits assessed by the DAFM when recommending seed varieties.
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Answer
Heading date
Total yield
Ground cover
Step 2
Identify which variety of perennial ryegrass produces the highest yield.
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Answer
Moyola produces the highest yield with 6.4 t DM/ha.
Step 3
Identify which variety would produce more grass in autumn.
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Answer
Moyola also produces more grass in autumn with 7 t DM/ha.
Step 4
Describe how Harry should prepare his seedbed.
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Answer
Harry should spray with total herbicide and plough 10 days after spraying. He should then spread lime and fertiliser or apply slurry after seeding. After that, he should power harrow to produce a fine seedbed and roll prior to sowing. Lastly, he should broadcast or sow seed close to the surface to ensure good soil to seed contact.
Step 5
State one reason why Harry has chosen certified seed to reseed his grassland.
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Answer
Certified seed ensures a minimum 85% germination rate and is true to type, free from disease and weeds.
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