Neco Model Questions Vol1 2023 Agricultural Science Question 8
Practice essay / theory question 8 from the 2023 Neco Model Questions Vol1 Agricultural Science examination. This question covers Plant Diseases .
A farmer observes wilting and yellowing of leaves on 30% of cassava plants in a 2 ha field. Laboratory analysis identifies the causal agent as Fusarium oxysporum f. sp. cubense (Fusarium wilt). The pathogen produces spores that can survive in soil for up to 5 years. Disease spread follows the model: proportion infected in the next season = p + r × (current proportion infected), where p is the primary infection rate from soil inoculum (0.02) and r is the secondary spread rate (1.2).
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This is Neco Model Questions Vol1 2023 Agricultural Science Question 8. It is one of the essay questions from the 2023 Neco Model Questions Vol1 Agricultural Science examination.
The question covers Plant Diseases .
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