Question:
What will be the weed control efficiency (%), if the number of weeds in clodinafop treated plot is 190 m\(^2\) and that in a control plot is 361 m\(^2\)?
What will be the weed control efficiency (%), if the number of weeds in clodinafop treated plot is 190 m\(^2\) and that in a control plot is 361 m\(^2\)?
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WCE = (Weed count in control - Weed count in treated) Weed count in control \(\times\) 100.
Higher WCE indicates better weed control.
Higher WCE indicates better weed control.
Updated On: Aug 18, 2026
- 4
- 43.4
- 47.3
- 57.3
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Weed control efficiency (WCE) measures the effectiveness of a herbicide.
It is calculated based on weed counts in treated and control plots.
Step 2: Key Formula or Approach:
WCE = \(\frac{\text{Weed count in control} - \text{Weed count in treated}}{\text{Weed count in control}} \times 100\).
Step 3: Detailed Explanation:
Weed count in control plot = 361 m\(^2\).
Weed count in treated plot = 190 m\(^2\).
WCE = \(\frac{361 - 190}{361} \times 100 = \frac{171}{361} \times 100 = 47.36\%\).
This is approximately 47.3%.
Step 4: Final Answer:
The weed control efficiency is 47.3%.
Hence, the correct option is (C).
Weed control efficiency (WCE) measures the effectiveness of a herbicide.
It is calculated based on weed counts in treated and control plots.
Step 2: Key Formula or Approach:
WCE = \(\frac{\text{Weed count in control} - \text{Weed count in treated}}{\text{Weed count in control}} \times 100\).
Step 3: Detailed Explanation:
Weed count in control plot = 361 m\(^2\).
Weed count in treated plot = 190 m\(^2\).
WCE = \(\frac{361 - 190}{361} \times 100 = \frac{171}{361} \times 100 = 47.36\%\).
This is approximately 47.3%.
Step 4: Final Answer:
The weed control efficiency is 47.3%.
Hence, the correct option is (C).
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