Question

The most suitable design for an experiment involving a varying number of tillage and nitrogen levels is:

• A. RBD
• B. Split plot
• C. Strip plot
• D. CRD

Hint:

Split plot design:
- Main plot: Factor requiring larger plots (e.g., tillage).
- Sub-plot: Factor requiring smaller plots (e.g., nitrogen).
- Useful when factors have different precision requirements.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
This question tests knowledge of experimental designs in agricultural research.

Step 2: Detailed Explanation:
A split plot design is most suitable when factors have different levels of precision requirements.
Tillage levels are typically applied to larger plots (main plots), while nitrogen levels can be applied to smaller sub-plots.
This design allows for efficient use of resources and precise estimation of interactions.
RBD (A): Randomized Block Design is used when there is one factor.
Strip plot (C): Used when both factors require large plots.
CRD (D): Completely Randomized Design is used in homogeneous conditions.
Thus, split plot design is the correct answer.

Step 3: Final Answer:
Thus, the most suitable design is split plot, which corresponds to option (B).
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