Neco Model Questions Vol1 2018 Agricultural Science Question 19
Practice objective / multiple choice question 19 from the 2018 Neco Model Questions Vol1 Agricultural Science examination.
Fish biomass N (tonnes) in a lake obeys the Schaefer model \( \frac{dN}{dt}= rN\left(1-\frac{N}{K}\right)-qEN \) with intrinsic growth rate \( r=0.5\ \text{yr}^{-1} \), carrying capacity \( K=1000\ \text{t} \), catchability coefficient \( q=0.0002\ \text{(boat‑day)}^{-1} \), and fishing effort E (boat‑days yr⁻¹). Find the effort level that gives the maximum sustainable yield and compute that maximum yield (tonnes yr⁻¹). Round the effort to the nearest whole boat‑day.
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This is Neco Model Questions Vol1 2018 Agricultural Science Question 19. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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