Waec Model Questions Vol1 2019 Agricultural Science Question 7

Practice essay / theory question 7 from the 2019 Waec Model Questions Vol1 Agricultural Science examination. This question covers Crop Pests, Stem Borer, Integrated Pest Management .

Waec Model Questions Vol1 2019 Agricultural Science Essay / Theory
Topics: Crop Pests Stem Borer Integrated Pest Management
Question 7 WAEC_MODEL_QUESTIONS_VOL1 • 2019 • AGRICULTURAL_SCIENCE • essay

A farmer cultivates maize on a 5‑hectare field. The stem borer (Busseola fusca) is a major pest in the region. Uncontrolled, the pest can cause an average yield loss of 0.8 tonnes per hectare. The current market price of maize is ₦150 per kilogram. The recommended insecticide treatment costs ₦12,000 per hectare and must be applied once during the cropping season.

Question Parts

( a )
Explain the life cycle of the stem borer and identify the stage that causes the most damage to the maize crop.
( b )
Using the data provided, calculate the monetary loss per hectare if the farmer does not treat the field.
( c )
Determine the economic threshold (in monetary terms) at which the insecticide treatment becomes justified. State whether the farmer should apply the insecticide for this field and justify your answer with calculations.
( d )
Outline an integrated pest management (IPM) strategy for stem borer that reduces reliance on chemical control.

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About This Question

This is Waec Model Questions Vol1 2019 Agricultural Science Question 7. It is one of the essay questions from the 2019 Waec Model Questions Vol1 Agricultural Science examination.

The question covers Crop Pests, Stem Borer, Integrated Pest Management .

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