Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors
Commercial optical chlorophyll meters estimate relative chlorophyll content using the ratio of transmitted red light and near-infrared (NIR) light emitted from a red light-emitting diode (LED) and an NIR LED. Normalized difference vegetation index (NDVI) sensors have red and NIR light detectors and...
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| Format: | Article |
| Language: | English |
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American Society for Horticultural Science (ASHS)
2021-05-01
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| Series: | HortTechnology |
| Subjects: | |
| Online Access: | https://journals.ashs.org/horttech/view/journals/horttech/31/3/article-p297.xml |
| _version_ | 1818140454614466560 |
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| author | Ji-Jhong Chen Shuyang Zhen Youping Sun |
| author_facet | Ji-Jhong Chen Shuyang Zhen Youping Sun |
| author_sort | Ji-Jhong Chen |
| collection | DOAJ |
| description | Commercial optical chlorophyll meters estimate relative chlorophyll content using the ratio of transmitted red light and near-infrared (NIR) light emitted from a red light-emitting diode (LED) and an NIR LED. Normalized difference vegetation index (NDVI) sensors have red and NIR light detectors and may be used to estimate chlorophyll content by detecting the transmitted red and NIR light through leaves. In this study, leaf chlorophyll content of ‘Torrey’ buffaloberry (Shepherdia ×utahensis) plants treated with 0 mm [zero nitrogen (N)], 2 mm (medium N), or 4 mm (ample N) ammonium nitrate for 3 weeks were evaluated using two commercial chlorophyll meters and NDVI sensors. The absolute chlorophyll content was determined using chlorophyll extraction. Our results showed that plants receiving ample N and medium N had decreased transmitted red light (i.e., greater absorption in red light). Measurements of optical chlorophyll meters, NDVI sensors, and chlorophyll extraction similarly showed that plants receiving medium N and ample N had greater leaf chlorophyll content than those receiving zero N. Relative leaf chlorophyll content estimated using NDVI sensors correlated positively with those from the chlorophyll meters (P < 0.0001; r2 range, 0.56–0.82). Therefore, our results indicate that NDVI measurements are sensitive to leaf chlorophyll content. These NDVI sensors, or specialized sensors developed using similar principles, can be used to estimate the relative chlorophyll content of nursery crops and help growers adjust fertilization to improve plant growth and nutrient status. |
| first_indexed | 2024-12-11T10:44:15Z |
| format | Article |
| id | doaj.art-d3f45795bf0944438b2e55d11444b88a |
| institution | Directory Open Access Journal |
| issn | 1943-7714 |
| language | English |
| last_indexed | 2024-12-11T10:44:15Z |
| publishDate | 2021-05-01 |
| publisher | American Society for Horticultural Science (ASHS) |
| record_format | Article |
| series | HortTechnology |
| spelling | doaj.art-d3f45795bf0944438b2e55d11444b88a2022-12-22T01:10:31ZengAmerican Society for Horticultural Science (ASHS)HortTechnology1943-77142021-05-01313297303https://doi.org/10.21273/HORTTECH04808-21Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index SensorsJi-Jhong ChenShuyang ZhenYouping SunCommercial optical chlorophyll meters estimate relative chlorophyll content using the ratio of transmitted red light and near-infrared (NIR) light emitted from a red light-emitting diode (LED) and an NIR LED. Normalized difference vegetation index (NDVI) sensors have red and NIR light detectors and may be used to estimate chlorophyll content by detecting the transmitted red and NIR light through leaves. In this study, leaf chlorophyll content of ‘Torrey’ buffaloberry (Shepherdia ×utahensis) plants treated with 0 mm [zero nitrogen (N)], 2 mm (medium N), or 4 mm (ample N) ammonium nitrate for 3 weeks were evaluated using two commercial chlorophyll meters and NDVI sensors. The absolute chlorophyll content was determined using chlorophyll extraction. Our results showed that plants receiving ample N and medium N had decreased transmitted red light (i.e., greater absorption in red light). Measurements of optical chlorophyll meters, NDVI sensors, and chlorophyll extraction similarly showed that plants receiving medium N and ample N had greater leaf chlorophyll content than those receiving zero N. Relative leaf chlorophyll content estimated using NDVI sensors correlated positively with those from the chlorophyll meters (P < 0.0001; r2 range, 0.56–0.82). Therefore, our results indicate that NDVI measurements are sensitive to leaf chlorophyll content. These NDVI sensors, or specialized sensors developed using similar principles, can be used to estimate the relative chlorophyll content of nursery crops and help growers adjust fertilization to improve plant growth and nutrient status.https://journals.ashs.org/horttech/view/journals/horttech/31/3/article-p297.xmlchlorophyll meterndvishepherdiaspadtransmitted light |
| spellingShingle | Ji-Jhong Chen Shuyang Zhen Youping Sun Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors HortTechnology chlorophyll meter ndvi shepherdia spad transmitted light |
| title | Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors |
| title_full | Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors |
| title_fullStr | Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors |
| title_full_unstemmed | Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors |
| title_short | Estimating Leaf Chlorophyll Content of Buffaloberry Using Normalized Difference Vegetation Index Sensors |
| title_sort | estimating leaf chlorophyll content of buffaloberry using normalized difference vegetation index sensors |
| topic | chlorophyll meter ndvi shepherdia spad transmitted light |
| url | https://journals.ashs.org/horttech/view/journals/horttech/31/3/article-p297.xml |
| work_keys_str_mv | AT jijhongchen estimatingleafchlorophyllcontentofbuffaloberryusingnormalizeddifferencevegetationindexsensors AT shuyangzhen estimatingleafchlorophyllcontentofbuffaloberryusingnormalizeddifferencevegetationindexsensors AT youpingsun estimatingleafchlorophyllcontentofbuffaloberryusingnormalizeddifferencevegetationindexsensors |