Neco 2020 Agricultural Science Question 8
Practice essay / theory question 8 from the 2020 Neco Agricultural Science examination. This question covers Plant Diseases .
A smallholder in southwestern Nigeria cultivates 2 ha of tomato. Three weeks after planting, the leaves develop circular brown lesions surrounded by concentric yellow rings, and the fruit shows small water‑soaked spots that later become sunken lesions. Laboratory analysis confirms the presence of a fungus that produces conidia in a moist environment. If no control is applied, the disease is expected to cause a 25 % yield loss. The farmer can apply a fungicide at a cost of ₦8,000 per hectare, which reduces disease incidence by 80 %. The expected yield of the farm without disease is 10,000 kg of tomatoes per hectare.
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This is Neco 2020 Agricultural Science Question 8. It is one of the essay questions from the 2020 Neco Agricultural Science examination.
The question covers Plant Diseases .
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