Neco 2022 Agricultural Science Question 41

Practice objective / multiple choice question 41 from the 2022 Neco Agricultural Science examination.

Neco 2022 Agricultural Science Objective / Multiple Choice Medium Difficulty
Question 41 NECO • 2022 • AGRICULTURAL_SCIENCE • objective

A field of 5 ha of maize is surveyed for leaf blight. The farmer randomly inspects 20 plants and records severity scores (0‑5). The total of the scores is 48. The disease severity index (DSI) is calculated as \( \frac{\text{total score}}{\text{maximum score} \times \text{number inspected}} \times 100\). If the recommended action threshold is DSI > 30 %, should the farmer take action? If action is needed, recommend the most appropriate sustainable control method for a fungal disease that overwinters in crop residues.

Answer Options

A. Yes; use resistant maize varieties as the primary control method.
B. No; the DSI is below the threshold, so no action is required.
C. Yes; apply a systemic fungicide such as a triazole at planting.
Correct Answer D. Yes; adopt cultural control (crop rotation and residue removal).
Correct Answer
D
Correct Option:
Yes; adopt cultural control (crop rotation and residue removal).

About This Question

This is Neco 2022 Agricultural Science Question 41. It is one of the objective questions from the 2022 Neco Agricultural Science examination.

Difficulty level: Medium .

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