Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation: method development, validation and application
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Aachen
Shaker
2003
|
| Schriftenreihe: | FAM-Bericht
58 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | VII, 68 S. Ill., graph. Darst. |
| ISBN: | 3832220712 |
Internformat
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| 245 | 1 | 0 | |a Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation |b method development, validation and application |c Felix Locher |
| 246 | 1 | |a Near infrared reflectance spectroscopy to predict the legume content in legume-grass mixtures as a key parameter in N 2 -fixation | |
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Datensatz im Suchindex
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| adam_text | Titel: Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a k
Autor: Locher, Felix
Jahr: 2003
Contents
1 General introduction...........................................................................................................1
2 The legume content in multispecies mixtures as estimated with Near Infrared
Reflectance Spectroscopy: method development...............................................................2
2.1 Abstract......................................................................................................................2
2.2 Introduction................................................................................................................2
2.3 Materials and Methods...............................................................................................4
2.3.1 Plant material............................................................................................................4
2.3.2 NIRS.........................................................................................................................5
2.3.3 Calibration procedure...............................................................................................6
2.4 Results and Discussion...............................................................................................9
2.4.1 Data pretreatment.....................................................................................................9
2.4.2 General applicability................................................................................................9
2.4.3 Calibration strategy................................................................................................10
2.5 Conclusion................................................................................................................13
3 The legume content in multispecies mixtures as estimated with Near Infrared
Reflectance Spectroscopy: method validation.................................................................14
3.1 Abstract....................................................................................................................14
3.2 Introduction..............................................................................................................15
3.3 Material and Methods...............................................................................................18
3.3.1 Plant material..........................................................................................................18
3.3.2 NIRS.......................................................................................................................19
3.3.3 Calibration procedure.............................................................................................19
3.3.4 Calculation of error figures....................................................................................20
3.4 Results and discussion..............................................................................................21
3.4.1 Comparison of the models A and B.......................................................................21
3.4.2 Influence of origin and harvesting date..................................................................23
3.4.3 Comparison of the models A, B and C...................................................................27
3.5 Conclusion................................................................................................................28
4 Method application: Nr-frxation in multispecies legume-grass mixtures........................30
4.1 Abstract....................................................................................................................30
4.2 Introduction..............................................................................................................30
4.2.1 Ndfi,..........................................................................................................................31
4.2.2 Ni,g..........................................................................................................................32
i
4.2.3 Legume content......................................................................................................32
4.3 Material and Methods...............................................................................................33
4.4 Results and Discussion.............................................................................................36
4.4.1 Amounts of N2 fixed..............................................................................................36
4.4.2 Comparison of N^fixation in different years and fields........................................39
4.4.3 Variability of N2 fixation in the field.....................................................................42
4.5 Conclusion................................................................................................................47
5 General discussion............................................................................................................49
5.1 NIRS.........................................................................................................................49
5.1.1 General aspects of NIRS calibrations.....................................................................49
5.1.2 Determination of the legume content in multispecies mixtures with NIRS...........50
5.1.2.1 Advantages of the NIRS method compared to visual estimates..................50
5.1.2.2 Conclusions and further aspects of calibration and validation.....................50
5.2 N2-fixation of legume-grass mixtures......................................................................53
5.2.1 The contribution of our results for the calculation of N-balances..........................53
5.2.2 Indicator function of the legume growth in legume-grass mixture - a potential
for site specific management..................................................................................54
6 Summary..........................................................................................................................55
7 Zusammenfassung............................................................................................................58
8 References........................................................................................................................62
|
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| discipline | Biologie Agrarwissenschaft Pflanzenbau |
| format | Thesis Book |
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| id | DE-604.BV017671064 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T19:20:35Z |
| institution | BVB |
| isbn | 3832220712 |
| language | English |
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| physical | VII, 68 S. Ill., graph. Darst. |
| publishDate | 2003 |
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| spelling | Locher, Felix 1968- Verfasser (DE-588)128526556 aut Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application Felix Locher Near infrared reflectance spectroscopy to predict the legume content in legume-grass mixtures as a key parameter in N 2 -fixation Aachen Shaker 2003 VII, 68 S. Ill., graph. Darst. txt rdacontent n rdamedia nc rdacarrier FAM-Bericht 58 Zugl.: München, Techn. Univ., Diss., 2003 Kleegras (DE-588)4309085-0 gnd rswk-swf Stickstofffixierung (DE-588)4183273-5 gnd rswk-swf NIR-Spektroskopie (DE-588)4298282-0 gnd rswk-swf Gemenge Pflanzenbau (DE-588)4310572-5 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Kleegras (DE-588)4309085-0 s Gemenge Pflanzenbau (DE-588)4310572-5 s Stickstofffixierung (DE-588)4183273-5 s NIR-Spektroskopie (DE-588)4298282-0 s DE-604 FAM-Bericht 58 (DE-604)BV009017422 58 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010626332&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Locher, Felix 1968- Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application FAM-Bericht Kleegras (DE-588)4309085-0 gnd Stickstofffixierung (DE-588)4183273-5 gnd NIR-Spektroskopie (DE-588)4298282-0 gnd Gemenge Pflanzenbau (DE-588)4310572-5 gnd |
| subject_GND | (DE-588)4309085-0 (DE-588)4183273-5 (DE-588)4298282-0 (DE-588)4310572-5 (DE-588)4113937-9 |
| title | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application |
| title_alt | Near infrared reflectance spectroscopy to predict the legume content in legume-grass mixtures as a key parameter in N 2 -fixation |
| title_auth | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application |
| title_exact_search | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application |
| title_full | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application Felix Locher |
| title_fullStr | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application Felix Locher |
| title_full_unstemmed | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation method development, validation and application Felix Locher |
| title_short | Near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in N 2 -fixation |
| title_sort | near infrared reflectance spectroscopy to predict the legume content in legume grass mixtures as a key parameter in n 2 fixation method development validation and application |
| title_sub | method development, validation and application |
| topic | Kleegras (DE-588)4309085-0 gnd Stickstofffixierung (DE-588)4183273-5 gnd NIR-Spektroskopie (DE-588)4298282-0 gnd Gemenge Pflanzenbau (DE-588)4310572-5 gnd |
| topic_facet | Kleegras Stickstofffixierung NIR-Spektroskopie Gemenge Pflanzenbau Hochschulschrift |
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