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Related Experiment Video

Updated: Jan 5, 2026

Author Spotlight: UAV Remote Sensing for Efficient Invasive Plant Biomass Estimation

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Published on: February 9, 2024

Sustainable Agriculture by Increasing Nitrogen Fertilizer Efficiency Using Low-Resolution Camera Mounted on Unmanned

Dong-Wook Kim¹, Tae-Sun Min², Yoonha Kim³

¹Department of Biosystems & Biomaterials Science and Engineering, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea. dwk8033@naver.com.

International Journal of Environmental Research and Public Health

|October 17, 2019

Summary

Low nitrogen use efficiency in agriculture wastes fertilizer and pollutes groundwater. Using the normalized difference vegetation index (NDVI) from drone imagery can effectively monitor crop nitrogen status, enabling precision agriculture.

Keywords:

chlorophyll contents near infrared nitrogen fertilizer normalized difference vegetation index (NDVI)

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Area of Science:

Agricultural Science
Environmental Science
Remote Sensing

Background:

Modern agriculture suffers from low nitrogen use efficiency, leading to fertilizer waste and environmental pollution.
Thin, rocky soils, such as those on Jeju Island, are particularly vulnerable to nitrogen leaching into groundwater.
Effective monitoring of crop nitrogen status is crucial for optimizing fertilizer application and minimizing environmental impact.

Purpose of the Study:

To investigate the potential of the normalized difference vegetation index (NDVI) for monitoring nitrogen deficiency in buckwheat fields.
To assess the feasibility of using low-resolution drone imagery for cost-effective precision agriculture.

Main Methods:

Calculated NDVI using data from a low-resolution camera mounted on an unmanned aerial vehicle (UAV).
Correlated NDVI values with chlorophyll content, a proxy for nitrogen status in buckwheat.

Main Results:

NDVI derived from UAV imagery accurately estimates chlorophyll content in buckwheat.
The study demonstrates a strong association between NDVI and crop nitrogen status.

Conclusions:

The normalized difference vegetation index (NDVI) is a viable tool for monitoring crop nitrogen status, even with low-resolution imagery.
Precision agriculture practices, aimed at reducing groundwater pollution, can be implemented cost-effectively using UAV-based NDVI monitoring.