Neco 2025 Agricultural Science Question 46

Practice objective / multiple choice question 46 from the 2025 Neco Agricultural Science examination.

Neco 2025 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 46 NECO • 2025 • AGRICULTURAL_SCIENCE • objective

A maize farmer monitors stem borer larvae. The larvae population multiplies by a factor of 2.5 each month. Economic damage occurs when the population exceeds 1500 larvae per hectare. At the start of the season the count is 200 larvae per hectare. The farmer can apply an insecticide that kills 80% of the larvae present at the time of application (leaving 20%). The season lasts four months and the farmer wants the population to stay below the threshold after each month's growth. How many insecticide applications are required and in which months should they be applied?

Answer Options

Correct Answer A. 2 applications, at the start of the 3rd and 4th months
B. 3 applications, at the start of the 2nd, 3rd and 4th months
C. 2 applications, at the start of the 2nd and 3rd months
D. 1 application, at the start of the 4th month
Correct Answer
A
Correct Option:
2 applications, at the start of the 3rd and 4th months

About This Question

This is Neco 2025 Agricultural Science Question 46. It is one of the objective questions from the 2025 Neco Agricultural Science examination.

Difficulty level: Medium .

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