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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