Neco Model Questions Vol1 2022 Agricultural Science Question 8

Practice essay / theory question 8 from the 2022 Neco Model Questions Vol1 Agricultural Science examination. This question covers Plant Diseases .

Neco Model Questions Vol1 2022 Agricultural Science Essay / Theory
Topic: Plant Diseases
Question 8 NECO_MODEL_QUESTIONS_VOL1 • 2022 • AGRICULTURAL_SCIENCE • essay

A commercial tomato farmer in the humid forest zone of Nigeria has been suffering from a foliar disease that reduces marketable yield.

Question Parts

( a )
Identify the most likely causal organism of early blight on tomato and outline its disease cycle, emphasizing the role of spores and environmental conditions.
( b )
Explain two environmental factors that favour the development and spread of early blight in tomato crops.
( c )
Propose an integrated disease management plan for early blight that incorporates cultural, chemical and host‑resistance strategies.
( d )
The farmer’s field covers 5 ha. The planting density is 10 000 plants ha⁻¹. Current disease incidence is 20 % and each infected plant loses 0.5 kg of marketable fruit. The market price of tomato is ₦150 kg⁻¹. A fungicide costing ₦2 000 ha⁻¹ can reduce incidence to 5 %. Calculate the net monetary benefit (in ₦) of applying the fungicide, showing all steps.

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About This Question

This is Neco Model Questions Vol1 2022 Agricultural Science Question 8. It is one of the essay questions from the 2022 Neco Model Questions Vol1 Agricultural Science examination.

The question covers Plant Diseases .

View More Neco Model Questions Vol1 2022 Agricultural Science Questions More Neco Model Questions Vol1 Practice Questions Back to Questions

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