i) Explain how potato blight reduces the yield of maincrop potatoes - Leaving Cert Agricultural Science - Question a - 2016
Question a
i) Explain how potato blight reduces the yield of maincrop potatoes.
When potato blight occurs, it damages the leaves or stems of the plant, which in turn affects p... show full transcript
Worked Solution & Example Answer:i) Explain how potato blight reduces the yield of maincrop potatoes - Leaving Cert Agricultural Science - Question a - 2016
Step 1
i) Explain how potato blight reduces the yield of maincrop potatoes.
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Answer
When potato blight occurs, it damages the leaves or stems of the plant, which in turn affects photosynthesis. Since the plant is unable to produce sufficient food, the quality and quantity of potatoes are reduced. As the disease progresses, it may also lead to tuber rot, causing additional loss in yield.
Step 2
ii) Describe two symptoms of potato blight.
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Black or brown spots on the leaves and stems.
White, mildewy growth on the underside of the leaves, indicating fungal infection.
Step 3
iii) Outline two methods of preventing potato blight.
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Using certified seed from resistant varieties or rotating crops to prevent the buildup of pathogens.
Implementing a fungicide regimen at the early signs of infection to manage the spread of the disease.
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