The role of Azolla cover in improving the nitrogen use efficiency of lowland rice:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Göttingen
Cuvillier
2002
|
| Ausgabe: | 1. Aufl. |
| Schriftenreihe: | Ecology and development series
2 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | Zugl.: Bonn, Univ., Diss., 2002 |
| Beschreibung: | XVI, 111, [23] S. graph. Darst. |
| ISBN: | 3898734684 |
Internformat
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| 100 | 1 | |a Macale, Maria Andrea Relos de |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a The role of Azolla cover in improving the nitrogen use efficiency of lowland rice |c Maria Andrea Relos de Macale |
| 250 | |a 1. Aufl. | ||
| 264 | 1 | |a Göttingen |b Cuvillier |c 2002 | |
| 300 | |a XVI, 111, [23] S. |b graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Ecology and development series |v 2 | |
| 500 | |a Zugl.: Bonn, Univ., Diss., 2002 | ||
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Datensatz im Suchindex
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|---|---|
| adam_text |
TABLE
OF
CONTENTS
ABSTRACT
.
III
KURZFASSUNG
.
IV
TABLE
OF
CONTENTS
.
V
LIST
OF
TABLES
.
VIII
LIST
OF
FIGURES
.
VIII
LIST
OF
APPENDICES
.
X
LIST
OF
ABBREVIATIONS
.
XIII
ACKNOWLEDGMENTS
.
XV
1
INTRODUCTION
.
1
2
REVIEW
OF
LITERATURE
.
4
2.1
FERTILIZER
TREND
AND
USAGE
.
4
2.2
NITROGEN
USE
EFFICIENCY
.
5
2.3
AMMONIA
VOLATILIZATION
.
7
2.4
MANAGEMENT
TECHNIQUES
TO
MINIMIZE
AMMONIA
LOSSES
.
9
2.5
AZOLLA
.
10
2.5.1
NITROGEN
FIXED
BY
AZOLLA
.
10
2.5.2
RELEASE
AND
AVAILABILITY
OF
AZOLLA-N
TO
RICE
.
11
2.5.3
EFFECT
OF
AZOLLA
ON
GRAIN
YIELD
AND
YIELD
COMPONENTS
.
11
2.5.4
OTHER
BENEFICIAL
EFFECTS
OF
AZOLLA
.
12
2.5.5
CRITICAL
FACTORS
AFFECTING
AZOLLA
GROWTH
.
13
2.5.6
AMOUNT
OF
AZOLLA
INOCULUM
AND
TIME
OF
INOCULATION.
14
2.5.7
THE
USE
OF
AZOLLA
TO
IMPROVE
N
USE
EFFICIENCY
.
14
3
MATERIALS
AND
METHODS
.
16
3.1
LOCATION
.
16
3.1.1
ON-STATION
FIELD
EXPERIMENTS
.
16
3.1.2
ON-FARM
FIELD
EXPERIMENTS
.
18
3.2
EXPERIMENTAL
LAYOUT
AND
TREATMENTS
.
20
3.3
PLANTING
MATERIALS
.
21
3.3.1
RICE
PLANT
.
21
3.3.2
AZOLLA
.
22
3.4
INORGANIC
FERTILIZER
.
22
3.5
15
N
BALANCE
DETERMINATION
.
23
3.5.1
MICROPLOT
SAMPLING
.
23
3.5.2
15
N
ANALYSIS
.
24
3.6
SAMPLING
METHODS
AND
ANALYSES
.
24
3.6.1
FLOODWATER
MEASUREMENTS
(1998-99
DRY
SEASON)
.
24
3.6.2
SOIL
SAMPLES
.
26
3.6.3
AZOLLA
SAMPLES
.
26
3.6.4
PLANT
SAMPLES
.
26
3.7
STATISTICAL
ANALYSIS
.
30
4
RESULTS
AND
DISCUSSION
.
31
4.1
FLOODWATER
CHEMISTRY
.
31
4.1.1
FLOODWATERPH
.
31
4.1.2
FLOODWATER
TEMPERATURE
.
34
4.1.3
FLOODWATER
TOTAL
AMMONIACAL-N
.
39
4.1.4
FLOODWATER
AQUEOUS
AMMONIA
.
42
4.1.5
PARTIAL
PRESSURE
OF
AMMONIA
.
43
4.2
15
N
RECOVERY
.
46
4.2.1
15
N
RECOVERY
BY
THE
RICE
.
46
4.2.2
15
N
RECOVERY
BY
AZOLLA
.
49
4.2.3
15
N
RECOVERY
IN
THE
SOIL.
50
4.2.4
TOTAL
15
N
RECOVERY
IN
THE
^ZOZ/A-PLANT-SOIL
SYSTEM
.
51
4.2.5
15
N
LOSSES
IN
THE
SYSTEM
.
52
4.3
APPARENT
N
RECOVERY
.
53
4.4
NITROGEN
UPTAKE
.
54
4.4.1
ON-STATION
FIELD
EXPERIMENTS
.
54
4.4.2
ON-FARM
FIELD
EXPERIMENTS
.
58
4.5
TILLER
AND
PANICLE
COUNT
.
67
4.5.1
ON-STATION
FIELD
EXPERIMENTS
.
67
4.5.2
ON-FARM
FIELD
EXPERIMENTS
.
69
4.6
TOTAL
DRY
MATTER
YIELD
AT HARVEST
.
73
4.6.1
ON-STATION
FIELD
EXPERIMENTS
.
73
4.6.2
ON-FARM
FIELD
EXPERIMENTS
.
74
4.7 GRAIN
YIELD
.
75
4.7.1
ON-STATION
FIELD
EXPERIMENTS
.
75
4.7.2
ON-FARM
FIELD
EXPERIMENTS
.
78
5
GENERAL
DISCUSSION
.
85
5.1
FLOODWATER
CHEMISTRY
.
86
5.2
15
N
RECOVERY
.
88
5.3
TOTAL
N
UPTAKE
.
89
5.4
CROP
GROWTH
AND
YIELD
.
90
6
CONCLUSIONS
.
92
7
RECOMMENDATIONS
.
94
8
SUMMARY
.
95
9
REFERENCES
.
99
APPENDICES
.
112 |
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| isbn | 3898734684 |
| language | English |
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| series | Ecology and development series |
| series2 | Ecology and development series |
| spelling | Macale, Maria Andrea Relos de Verfasser aut The role of Azolla cover in improving the nitrogen use efficiency of lowland rice Maria Andrea Relos de Macale 1. Aufl. Göttingen Cuvillier 2002 XVI, 111, [23] S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Ecology and development series 2 Zugl.: Bonn, Univ., Diss., 2002 Wasserreis (DE-588)4126929-9 gnd rswk-swf Reisanbau (DE-588)4129532-8 gnd rswk-swf Stickstoffhaushalt (DE-588)4183268-1 gnd rswk-swf Algenfarn (DE-588)4139627-3 gnd rswk-swf Philippinen (DE-588)4045771-0 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Philippinen (DE-588)4045771-0 g Wasserreis (DE-588)4126929-9 s Reisanbau (DE-588)4129532-8 s Algenfarn (DE-588)4139627-3 s Stickstoffhaushalt (DE-588)4183268-1 s DE-604 Ecology and development series 2 (DE-604)BV015679114 2 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=015674938&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Macale, Maria Andrea Relos de The role of Azolla cover in improving the nitrogen use efficiency of lowland rice Ecology and development series Wasserreis (DE-588)4126929-9 gnd Reisanbau (DE-588)4129532-8 gnd Stickstoffhaushalt (DE-588)4183268-1 gnd Algenfarn (DE-588)4139627-3 gnd |
| subject_GND | (DE-588)4126929-9 (DE-588)4129532-8 (DE-588)4183268-1 (DE-588)4139627-3 (DE-588)4045771-0 (DE-588)4113937-9 |
| title | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice |
| title_auth | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice |
| title_exact_search | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice |
| title_exact_search_txtP | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice |
| title_full | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice Maria Andrea Relos de Macale |
| title_fullStr | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice Maria Andrea Relos de Macale |
| title_full_unstemmed | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice Maria Andrea Relos de Macale |
| title_short | The role of Azolla cover in improving the nitrogen use efficiency of lowland rice |
| title_sort | the role of azolla cover in improving the nitrogen use efficiency of lowland rice |
| topic | Wasserreis (DE-588)4126929-9 gnd Reisanbau (DE-588)4129532-8 gnd Stickstoffhaushalt (DE-588)4183268-1 gnd Algenfarn (DE-588)4139627-3 gnd |
| topic_facet | Wasserreis Reisanbau Stickstoffhaushalt Algenfarn Philippinen Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=015674938&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV015679114 |
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