Neco 2018 Agricultural Science Question 7

Practice essay / theory question 7 from the 2018 Neco Agricultural Science examination. This question covers Crop Pests .

Neco 2018 Agricultural Science Essay / Theory
Topic: Crop Pests
Question 7 NECO • 2018 • AGRICULTURAL_SCIENCE • essay

A cassava farmer in the Niger Delta region reports an increasing presence of a pest that causes leaf wilting and stunted growth. The pest is known to reproduce rapidly and can cause severe yield loss if not controlled. The farmer currently observes a pest density of 800 individuals per hectare. Data provided: - Cost of applying the recommended pesticide per hectare (C): ₦5,000 - Efficacy of the pesticide (proportion of damage prevented, K): 0.8 - Market value of cassava per tonne (Vₜ): ₦200,000 - Expected yield of cassava per hectare (Y): 10 tonnes - Each 1,000 pests per hectare cause a 0.5% yield loss (D = 0.005 per 1,000 pests) Using the Economic Injury Level (EIL) formula \(\frac{C}{V \times D \times K}\) where V is the market value per hectare, answer the following:

Question Parts

( a )
Identify two major pests of cassava in Nigeria and briefly describe the life cycle of each.
( b )
Calculate the Economic Injury Level (EIL) for the pest described, using the data supplied. Show all steps.
( c )
Based on the current pest density (800 pests per ha) and the EIL you have calculated, recommend whether the farmer should apply the pesticide. Justify your recommendation.
( d )
Outline an Integrated Pest Management (IPM) programme for this cassava pest, covering cultural, biological, mechanical and chemical control measures.

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About This Question

This is Neco 2018 Agricultural Science Question 7. It is one of the essay questions from the 2018 Neco Agricultural Science examination.

The question covers Crop Pests .

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