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Article

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

1
Department of Biosystems & Biomaterials Science and Engineering, College of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Korea
2
Department of Animal Biotechnology, Jeju National University, Jeju 63243, Korea
3
Plant Bioscience, School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea
4
Institute of Mathematics and Statistics, Federal University of Goias, Goiania 74001-970, Brazil
5
Department of Plant Resources and Environment, Jeju National University, Jeju 63243, Korea
6
National Institute of Agricultural Sciences, Rural Development Administration (RDA), Jeonju 54874, Korea
*
Authors to whom correspondence should be addressed.
These authors also contributed equally to this work.
Int. J. Environ. Res. Public Health 2019, 16(20), 3893; https://doi.org/10.3390/ijerph16203893
Received: 24 July 2019 / Revised: 7 October 2019 / Accepted: 9 October 2019 / Published: 14 October 2019
Nitrogen use efficiency in modern agriculture is very low. It means that a lot of synthetic chemicals are wasted rather than utilized by crops. This can cause more problems where the soil surface is thin and rocky like Jeju Island in the Republic of Korea. This is because overly used nitrogen fertilizer can be washed into the underground water and pollute it. Thus, it would be important to monitor the nitrogen deficiency of crops in the field to provide the right amount of nitrogen in a timely manner so that nitrogen waste can be limited. To achieve this, the normalized difference vegetation index (NDVI) was used to monitor chlorophyll content, which is tightly associated with nitrogen content in the buckwheat field. The NDVI was calculated with the data obtained by a low-resolution camera mounted on an unmanned aerial vehicle. The results showed that the NDVI can estimate the chlorophyll content of buckwheat. These simple but clear results imply that precision agriculture could be achieved even with a low-resolution camera in a cost-effective manner to reduce the pollution of underground water. View Full-Text
Keywords: nitrogen fertilizer; chlorophyll contents; near infrared; normalized difference vegetation index (NDVI) nitrogen fertilizer; chlorophyll contents; near infrared; normalized difference vegetation index (NDVI)
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MDPI and ACS Style

Kim, D.-W.; Min, T.-S.; Kim, Y.; Silva, R.R.; Hyun, H.-N.; Kim, J.-S.; Kim, K.-H.; Kim, H.-J.; Chung, Y.S. Sustainable Agriculture by Increasing Nitrogen Fertilizer Efficiency Using Low-Resolution Camera Mounted on Unmanned Aerial Vehicles. Int. J. Environ. Res. Public Health 2019, 16, 3893. https://doi.org/10.3390/ijerph16203893

AMA Style

Kim D-W, Min T-S, Kim Y, Silva RR, Hyun H-N, Kim J-S, Kim K-H, Kim H-J, Chung YS. Sustainable Agriculture by Increasing Nitrogen Fertilizer Efficiency Using Low-Resolution Camera Mounted on Unmanned Aerial Vehicles. International Journal of Environmental Research and Public Health. 2019; 16(20):3893. https://doi.org/10.3390/ijerph16203893

Chicago/Turabian Style

Kim, Dong-Wook, Tae-Sun Min, Yoonha Kim, Renato R. Silva, Hae-Nam Hyun, Ju-Sung Kim, Kyung-Hwan Kim, Hak-Jin Kim, and Yong S. Chung 2019. "Sustainable Agriculture by Increasing Nitrogen Fertilizer Efficiency Using Low-Resolution Camera Mounted on Unmanned Aerial Vehicles" International Journal of Environmental Research and Public Health 16, no. 20: 3893. https://doi.org/10.3390/ijerph16203893

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