Question:
NDVI of a crop can be measured by using
NDVI of a crop can be measured by using
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NDVI measurement:
- Green Seeker: Active sensor for NDVI.
- NDVI = (NIR - Red) (NIR + Red).
- Used for crop health monitoring.
- Green Seeker: Active sensor for NDVI.
- NDVI = (NIR - Red) (NIR + Red).
- Used for crop health monitoring.
Updated On: Aug 27, 2026
- Leaf colour chart
- Chlorophyll meter
- Green Seeker
- Canopy analyser
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of instruments used to measure vegetation indices.
Step 2: Detailed Explanation:
NDVI (Normalized Difference Vegetation Index) is measured using active sensors like the Green Seeker.
It uses red and near-infrared (NIR) bands to calculate NDVI.
Leaf colour chart (A): Used to assess nitrogen status.
Chlorophyll meter (B): Measures chlorophyll content (SPAD).
Canopy analyser (D): Measures leaf area index (LAI).
Thus, NDVI is measured by Green Seeker.
Step 3: Final Answer:
Thus, NDVI can be measured using Green Seeker, which corresponds to option (C).
[0.5cm]
This question tests knowledge of instruments used to measure vegetation indices.
Step 2: Detailed Explanation:
NDVI (Normalized Difference Vegetation Index) is measured using active sensors like the Green Seeker.
It uses red and near-infrared (NIR) bands to calculate NDVI.
Leaf colour chart (A): Used to assess nitrogen status.
Chlorophyll meter (B): Measures chlorophyll content (SPAD).
Canopy analyser (D): Measures leaf area index (LAI).
Thus, NDVI is measured by Green Seeker.
Step 3: Final Answer:
Thus, NDVI can be measured using Green Seeker, which corresponds to option (C).
[0.5cm]
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