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Sticksel, E. and Maidl, F.-X. and Schächtl, J. and Huber, G. and Schulz, J. (2001) Lacer-induced Chlorophyll Fluorescence - a Tool for Online Detecting Nitrogen Status in Crop Stands. In: 3rd ECPA Proceedings, pp. 959-964. 3rd European Conference on Precision Agriculture, Montpellier.
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Abstract
The on-line monitoring of crop stands is essential in a system of site specific N application. The chlorophyll fluorescence ratio F685/F730 is correlated with chlorophyll content and nitrogen content. Therefore monitoring the laser-induced chlorophyll fluorescence might be used to assess the N status of plants. During the 2000 growing period field campaigns were done with a hand held device to measure the fluorescence ratio F685/F730. Fluorescence ratio was negative correlated with N content and in late growth stages with N uptake as well. The coefficient of correlation was between r=0.976 (N content in dry matter in EC 30 against fluorescence ratio) and r=0.737 (N uptake in EC 37 against fluorescence ratio). The experiences of the 2000 measuring campaign will be applied for the further improvement of the technical design.
| Item URL in elib: | https://elib.dlr.de/7879/ | ||||||||||||||||||
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| Document Type: | Conference or Workshop Item (Paper) | ||||||||||||||||||
| Additional Information: | LIDO-Berichtsjahr=2001, | ||||||||||||||||||
| Title: | Lacer-induced Chlorophyll Fluorescence - a Tool for Online Detecting Nitrogen Status in Crop Stands | ||||||||||||||||||
| Authors: |
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| Date: | 2001 | ||||||||||||||||||
| Journal or Publication Title: | 3rd ECPA Proceedings | ||||||||||||||||||
| Open Access: | No | ||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||
| Page Range: | pp. 959-964 | ||||||||||||||||||
| Editors: |
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| Status: | Published | ||||||||||||||||||
| Event Title: | 3rd European Conference on Precision Agriculture, Montpellier | ||||||||||||||||||
| Organizer: | European Conference on Precision Agriculture | ||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||
| HGF - Program: | Space (old) | ||||||||||||||||||
| HGF - Program Themes: | W EO - Erdbeobachtung | ||||||||||||||||||
| DLR - Research area: | Space | ||||||||||||||||||
| DLR - Program: | W EO - Erdbeobachtung | ||||||||||||||||||
| DLR - Research theme (Project): | UNSPECIFIED | ||||||||||||||||||
| Location: | Oberpfaffenhofen | ||||||||||||||||||
| Institutes and Institutions: | Remote Sensing Technology Institute | ||||||||||||||||||
| Deposited By: | Roehl, Cornelia | ||||||||||||||||||
| Deposited On: | 16 Sep 2005 | ||||||||||||||||||
| Last Modified: | 06 Jan 2010 22:04 |
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