Waec Model Questions Vol1 2017 Agricultural Science Question 8
Practice essay / theory question 8 from the 2017 Waec Model Questions Vol1 Agricultural Science examination. This question covers Plant Diseases .
A farmer observes leaf spots on tomato plants in a 1.2 ha farm. The disease is early blight caused by Alternaria solani. Disease incidence is 25% of the plants and each diseased plant yields 30% less fruit weight than a healthy plant. The average fruit yield per healthy plant is 5 kg. The farmer planted the tomatoes at a density of 16,667 plants per hectare, giving a total of 20,000 plants on the farm. The farmer wants to implement a disease‑management programme using resistant varieties, crop rotation and a fungicide spray. The recommended fungicide (copper oxychloride) is to be applied at 2.0 kg per hectare of a 50% (w/w) formulation. The formulation is sold in 25‑kg bags at ₦3,500 per bag.
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This is Waec Model Questions Vol1 2017 Agricultural Science Question 8. It is one of the essay questions from the 2017 Waec Model Questions Vol1 Agricultural Science examination.
The question covers Plant Diseases .
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