Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa:
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Hamburg
Verein zur Förderung der Bodenkunde
2001
|
| Schriftenreihe: | Hamburger bodenkundliche Arbeiten
49 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
| Beschreibung: | IX, 241 S. graph. Darst., Kt. : 21 cm |
Internformat
MARC
| LEADER | 00000nam a2200000 cb4500 | ||
|---|---|---|---|
| 001 | BV014065333 | ||
| 003 | DE-604 | ||
| 005 | 20030127 | ||
| 007 | t | ||
| 008 | 011211s2001 gw bd|| m||| 00||| eng d | ||
| 016 | 7 | |a 963108433 |2 DE-101 | |
| 035 | |a (OCoLC)174810220 | ||
| 035 | |a (DE-599)BVBBV014065333 | ||
| 040 | |a DE-604 |b ger |e rakddb | ||
| 041 | 0 | |a eng | |
| 044 | |a gw |c DE | ||
| 049 | |a DE-703 |a DE-188 | ||
| 084 | |a RS 39666 |0 (DE-625)142471:12816 |2 rvk | ||
| 100 | 1 | |a Häfele, Stephan Markus |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa |c vorgelegt von Stephan Markus Häfele. [Hrsg.: Verein zur Förderung der Bodenkunde in Hamburg] |
| 264 | 1 | |a Hamburg |b Verein zur Förderung der Bodenkunde |c 2001 | |
| 300 | |a IX, 241 S. |b graph. Darst., Kt. : 21 cm | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Hamburger bodenkundliche Arbeiten |v 49 | |
| 502 | |a Hamburg, Univ., Diss., 2001 | ||
| 650 | 0 | 7 | |a Reisanbau |0 (DE-588)4129532-8 |2 gnd |9 rswk-swf |
| 651 | 7 | |a Westafrika |0 (DE-588)4079203-1 |2 gnd |9 rswk-swf | |
| 655 | 7 | |0 (DE-588)4113937-9 |a Hochschulschrift |2 gnd-content | |
| 689 | 0 | 0 | |a Westafrika |0 (DE-588)4079203-1 |D g |
| 689 | 0 | 1 | |a Reisanbau |0 (DE-588)4129532-8 |D s |
| 689 | 0 | |5 DE-604 | |
| 830 | 0 | |a Hamburger bodenkundliche Arbeiten |v 49 |w (DE-604)BV000019547 |9 49 | |
| 856 | 4 | 2 | |m HBZ Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009633055&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 999 | |a oai:aleph.bib-bvb.de:BVB01-009633055 | ||
Datensatz im Suchindex
| _version_ | 1804128927651725312 |
|---|---|
| adam_text | Titel: Improved and sustainable nutrient management for irrigated rice based cropping systems in West Afric
Autor: Häfele, Stephan Markus
Jahr: 2001
IV
Contents
Improved and sustainable nutrient management for irrigated rice-based cropping systems in
West Africa
1 Introduction and objectives..........................................................................................1
2 Rice in West Africa......................................................................................................4
3 Literature review.........................................................................................................9
3.1 Modern irrigated rice cultivars..............................................................................9
3.2 Processes in flooded soils....................................................................................11
3.3 Plant nutrients in soils and their transformation under flooded conditions............14
3.4 Mineral fertilizers and other nutrient sources in irrigated rice systems..................20
3.5 Development of fertilizer recommendations........................................................25
3.6 Sustainability of irrigated, rice based systems......................................................27
3.7 Simulation tools for irrigated rice and for the calculation of fertilizer doses.........28
4 The environment of irrigated rice at the study sites....................................................32
4.1 Study sites in West Africa...................................................................................32
4.2 Climate...............................................................................................................33
4.3 Geomorphology, geology and soils.....................................................................37
4.3.1 General overview.........................................................................................37
4.3.2 Office du Niger in Mali................................................................................39
4.3.3 Kou Valley in Burkina Faso.........................................................................42
4.3.4 Senegal river valley in Senegal and Mauritania.............................................44
4.4 Socio-economic background...............................................................................49
5 Materials and methods...............................................................................................51
5.1 Soil analysis........................................................................................................51
5.2 Plant analysis......................................................................................................54
5.3 13C analysis.........................................................................................................55
5.4 Calculation of agronomic parameters..................................................................55
5.5 Experiments at research stations in Ndiaye and Fanaye........................................57
5.6 Surveys and participatory evaluation of improved crop management...................61
5.7 Comparison of cultivated and uncultivated soils..................................................65
5.8 Nutrient balances................................................................................................67
5.9 Mineral fertilizers used........................................................................................68
5.10 Crop growth modeling......................................................................................68
5.11 Statistical analysis.............................................................................................69
6 Results......................................................................................................................70
6.1 Agronomic and socio-economic characterization of the irrigated system..............70
6.2 Parameters for the assessment of fertilizer requirements in farmers fields............80
6.2.1 Indigenous soil nutrient supply for N, P and K.............................................80
6.2.2 Internal efficiency of N, P and K..................................................................88
6.2.3 Recovery fractions of applied mineral fertilizer.............................................92
6.3 Fertilizer experiments..........................................................................................94
6.3.1 Long Term Fertilizer Experiment.................................................................94
6.3.2 Nutrient omission trials................................................................................99
6.3.3 Straw management experiment...................................................................103
6.4 Development of fertilizer recommendations......................................................107
6.4.1 Simulated yield potential as basis for fertilizer recommendations................107
6.4.2 Simulation of fertilizer needs and agro-economic sensitivity analysis
to define target yields.................................................................................108
6.5 Integrated crop management recommendations.................................................115
6.6 Testing new recommendations in farmers fields................................................117
6.7 Sustainability of irrigated rice cropping in Sahelian West Africa........................123
6.7.1 Yield evolution in Long Term Fertility Experiments...................................123
6.7.2 Effect of irrigated rice cultivation on the soil resource base........................126
6.7.3 Nutrient balance of irrigated rice cultivation in the Senegal river valley.......142
7 Discussion and Conclusions.....................................................................................153
7.1 Framework of the presented study....................................................................153
7.2 Improving nutrient management of irrigated rice in West Africa........................155
7.2.1 Agronomic and socio-economic constraints and opportunities for
irrigated rice in West Africa.......................................................................155
7.2.2 Yield determining bio-physical factors at the study sites.............................158
7.2.3 Use of simulation tools to develop site specific recommendations...............162
7.2.4 Integrated crop management recommendations and their evaluation in
farmers fields............................................................................................166
7.3 Sustainability of irrigated rice in West Africa.....................................................168
7.3.1 Sustainability - concept and context at the study sites.................................168
7.3.2 Long term yield development as an indicator of sustainability.....................169
7.3.3 Impact of irrigated rice cropping on the soil resource base..........................171
7.3.4 Nutrient im- and export in the Sahelian environment..................................181
7.4 Conclusions......................................................................................................186
8 Summary.................................................................................................................188
9 References...............................................................................................................191
10 Appendix...............................................................................................................221
10.1 Soil profile data for Ndiaye, Senegal...............................................................221
10.2 Soil profile data for Fanaye, Senegal...............................................................225
10.3 Questionaire used in farmers surveys.............................................................229
10.4 Overview of WARD As farms at Ndiaye and Fanaye and of sampling
locations at Boundoum, Lampsar and Guede..................................................232
10.5 Curriculum vitae.............................................................................................235
VI
List of tables
Table 1: Distribution of rice production among main agro-ecosystems
in West and Central Africa......................................................................................5
Table 2: Chemical and physical soil characteristics for a typical soil profile at
WARDA s research farm in Ndiaye.....................................................................47
Table 3: Chemical and physical soil characteristics for a typical soil profile at
WARDA s research farm in Fanaye......................................................................48
Table 4: Fertilizer treatments in WARDAs LTFEs in Senegal............................................57
Table 5: Fertilizer treatments and nitrogen splits in the nutrient omission trial at
WARDAs research farms in Ndiaye and Fanaye...................................................59
Table 6: Straw and fertilizer treatments in the straw management trial at WARDAs
research farms in Ndiaye and Fanaye....................................................................60
Table 7: Sites and number of participating farmers in the agronomic and socio-
economic survey of 42 fanners in the Senegal river valley, Mauritania..................61
Table 8: Survey sites, seasons and number of participating fanners in Mauritania, Senegal,
Mali and Burkina Faso, of which plant and soil samples were analyzed.................63
Table 9: Overview of sampling sites and samples used for the comparison of
cultivated and uncultivated soils............................................................................66
Table 10: Soil reaction, electrical conductivity, exchangeable bases and available P
of the top-soil for all fields of participating farmers during the
1997 wet season survey in Mauritania...................................................................71
Table 11: Fertilizer and herbicide management practices, grain yield, and nitrogen
efficiency in fanners fields in the Senegal river region, based on
the 1997 wet season survey in Mauritania.............................................................73
Table 12: Grain yield of unfertilized plots, of fanners practice and indigenous soil
nutrient supply for N, P and K in farmers fields in the Senegal river region,
based on the 1997 wet season survey in Mauritania..............................................74
Table 13: General characteristics of yield and productivity gap surveys, average, minimum
and maximum grain yields observed, and yield gaps for irrigation
schemes in Mauritania, Senegal, Mali and Burkina Faso........................................78
Table 14: Fertilizer use in relation to existing fertilizer recommendations and fertilizer
efficiency for irrigation schemes in Mauritania, Senegal, Mali and Burkina Faso.... 79
Table 15: Descriptive statistics of indigenous soil nitrogen supply in Mauritania, Senegal,
Mali and Burkina Faso and the LTFEs in Ndiaye and Fanaye................................82
Table 16: Descriptive statistics of indigenous soil phosphorus supply in Mauritania,
Senegal, Mali and Burkina Faso and the LTFEs in Ndiaye and Fanaye..................83
Table 17: Descriptive statistics of indigenous soil potassium supply in Mauritania,
Senegal, Mali and Burkina Faso and the LTFEs in Ndiaye and Fanaye..................84
Table 18: Statistical characterization of chemical soil parameters of the topsoil at the
survey sites in the Senegal river delta and middle valley, in the Office du Niger,
in the Kou valley and at Foum Gleita...................................................................86
Table 19: Grain and straw yield, total aboveground plant dry-matter, harvest index,
concentrations of N, P and K in grains and straw, and N, P and K accumulation
in total aboveground dry-matter at maturity of irrigated rice.................................89
Table 20: Internal efficiency for N, P and K at maturity of irrigated rice grown in
unfertilized plots and farmers fields as well as in fertilizer trials............................90
Table 21: Descriptive statistics of recovery fractions of applied N fertilizer in farmers
fields at survey shes in Mauritania, Senegal, Mali and Burkina Faso......................93
VII
Table 22: Descriptive statistics of recovery fractions of applied N, P and K fertilizer
measured in the LTFEs at Ndiaye and Fanaye.......................................................94
Table 23: Average grain yields in the Long Term Fertility Experiment at Ndiaye and
Fanaye during the period from 1991 to 1999........................................................95
Table 24: Influence of cultivar, site and season on yield components in WARD As
LTFEs at Ndiaye and Fanaye in the Senegal river region.......................................96
Table 25: Influence of treatments on yield components in WARD As LTFEs
at Ndiaye and Fanaye in the Senegal river region..................................................97
Table 26: Concentration of mineral elements in rice dry matter at maturity for the
three cultivars used in WARDAs LTFEs at Ndiaye and Fanaye............................98
Table 27: Influence of treatments on elemental composition in straw and grain in
WARDAs LTFEs at Ndiaye and Fanaye..............................................................99
Table 28: Results of the analysis of variance for the nutrient omission trial at
Ndiaye and Fanaye.............................................................................................100
Table 29: Total aboveground N, P and K uptake in the straw management
experiment in Ndiaye..........................................................................................105
Table 30: N, P and K concentration in rice dry matter in the straw management
experiment in Ndiaye..........................................................................................106
Table 31: Simulated potential yields for four weather stations in the Senegal river valley.....107
Table 32: Simulated N, P and K requirements to reach specific target yields in the
Senegal river region, depending on potential yield...............................................Ill
Table 33: Simplified scheme of maximal recommended N, P and K doses for the
different agro-ecological zones in the Senegal river region..................................116
Table 34: Grain yields obtained at the experimental sites in Senegal and Mauritania
during the wet season 1998................................................................................119
Table 35: Costs and prices used for the economic evaluation of all treatments in
Senegal and Mauritania during the wet season 1998...........................................120
Table 36: Economic evaluation of the four treatments at the experimental sites in
Senegal and Mauritania during the wet season 1998...........................................121
Table 37 Yield trends for observed and simulated yields for 17 seasons in
WARDAs LTFEs at Ndiaye and Fanaye............................................................125
Table 38: Trends of average daily radiation during the crop cycle for 17 seasons in
WARDAs LTFEs at Ndiaye and Fanaye............................................................125
Table 39: Soil reaction, soil organic carbon, total soil N and C/N ratio of samples from
three different soil horizons at the LTFE sites Ndiaye and Fanaye.......................128
Table 40: Total soil N, exchangeable N and fixed N for three different treatments
at the LTFE sites in Ndiaye and Fanaye..............................................................130
Table 41: Amount of potassium extracted with 1.0A/ammonium acetate, with
cold 0. IM HN03 and by repeated extractions with boiling M HNO3
from samples of three soil horizons and two treatments at the LTFE sites
in Ndiaye and Fanaye..........................................................................................133
Table 42: Exchangeable K, StepK, constant rate K, and total amount of non-
exchangeable K in three different soil layers for two different fertilizer
treatments and the LTFE sites in Ndiaye and Fanaye...........................................135
Table 43: Estimation of total exchangeable K and nonexchangeable K for two different
fertilizer treatments at the LTFE sites in Ndiaye and Fanaye...............................136
Table 44: Nutrient balances for N, P, K, Ca, Mg and Na, based on nutrient export with
grain and straw and nutrient import with fertilizers in the LTFEs
at Ndiaye and Fanaye..........................................................................................144
Table 45: Literature data on solid residues, pH, EC, and concentration of nutrients
_____________________________________________________ VIP
in irrigation and drainage water, and soil solution in the Senegal river region......148
Table 46: Elements of the water balance based on measured percolation and drainage, on
average evapotranspiration determined by Samba (1998) and on
simulated evaporation according to Ritchie (1972)..............................................149
Table 47: Balance for several elements and double cropping in Ndiaye compared to
nutrient im- and export of the LTFE treatment T3 with
and without straw removal.................................................................................151
Table 48: Balance for several elements and double cropping in Fanaye compared to
nutrient im- and export of the LTFE treatment T3 with
and without straw removal.................................................................................152
Table 49: Soil profile description of Ndiaye, Senegal..........................................................221
Table 50: Elemental composition of the profile at Ndiaye, Senegal.....................................222
Table 51: Mineral and pedogen oxides in the profile at Ndiaye, Senegal.............................223
Table 52: Soil profile description at Fanaye, Senegal..........................................................225
Table 53: Elemental composition of the soil profile in Fanaye, Senegal...............................226
Table 54: Mineral and pedogen oxides in the profile in Fanaye, Senegal.............................227
List of figures
Figure 1: Four quadrant diagram illustrating the relation between fertilizer application,
potential nutrient supply, actual plant uptake and yield..........................................26
Figure 2: Relation between N uptake and crop yield calculated with QUEFTS.....................30
Figure 3: The study sites in West Africa..............................................................................32
Figure 4: Climatic parameters for Ndiaye, Senegal...............................................................34
Figure 5: Climatic parameters for Fanaye, Senegal...............................................................35
Figure 6: Broad lithological regions of West Afiica.............................................................38
Figure 7: The main irrigated rice production zones of Office du Niger.................................40
Figure 8: The perimeter Kou valley in the south-west of Burkina Faso..............................43
Figure 9: Senegal river delta and valley................................................................................45
Figure 10: Sites of characterization surveys and of participatory evaluations of improved
crop management along the Senegal river............:................................................61
Figure 11: Relative importance of constraints as perceived by farmers during the
1997 wet season field survey in Mauritania...........................................................75
Figure 12: Relationship between grain yield and accumulation of N, P and K in total
aboveground plant dry-matter at maturity of rice..................................................91
Figure 13: Grain yields in the nutrient omission trial at Ndiaye............................................101
Figure 14: Grain yields in the nutrient omission trial at Fanaye............................................102
Figure 15: Grain yields in the straw management experiment at Ndiaye and Fanaye.............104
Figure 16: Influence of potential yield and indigenous soil nutrient supply on target yield.... 113
Figure 17: Relation between total fertilizer costs and target yield depending on
indigenous soil nutrient supply and potential yield...............................................114
Figure 18: Total costs of fertilizers to reach different target yields depending on Yp*
and related net returns........................................................................................115
Figure 19: Development of rice and weed biomass within the 4 treatments at sites in
Mauritania..........................................................................................................118
Figure 20: Sample cumulative distribution functions of net benefit for the four treatments
at the experimental sites in Senegal and Mauritania.............................................122
IX________________________________________________________________________
Figure 21: Observed and simulated yields for 17 seasons in WARDAs LTFEs
at Ndiaye and Fanaye..........................................................................................124
Figure 22: Development of soil reaction and electrical conductivity in the topsoil
at the LTFE sites Ndiaye and Fanaye..................................................................127
Figure 23: Comparison of soil organic carbon, total soil nitrogen and S13C in the profile
between cultivated soils and adjacent uncultivated soils at Ndiaye and Fanaye.....129
Figure 24: Development of extractable phosphorus in the topsoil of the LTFE in Ndiaye
for different P-fertilizer treatments......................................................................131
Figure 25: Extracted phosphorus in seven different P fractions for the treatments T2
and T3 in the LTFEs at Ndiaye and Fanaye.........................................................132
Figure 26: Development of pH, electrical conductivity, extractable P and nonexchangeable
K in the topsoil and the subsoil in fields with differing cropping history and in
comparison with adjacent uncultivated soils........................................................139
Figure 27: Development of soil organic carbon, total soil N, C/N ratio and S 13C values
in the topsoil and the subsoil in fields with differing cropping history and in
comparison with adjacent uncultivated soils........................................................140
Figure 28: Development of pH, electrical conductivity, extractable P and
nonexchangeable K in the topsoil and the subsoil for two treatments
of the LTFE in Office du Niger, Mali..................................................................141
Figure 29: Development of soil organic carbon, total soil N and C/N ratio in the topsoil
and the subsoil for two treatments of the LTFE in Office du Niger, Mali.............142
Figure 30: Dust deposition in Ndiaye and Fanaye................................................................146
Figure 31: Interdependent of socio-economic and bio-physical settings, farmers choice
of crop and resource management strategies, productivity and profitability
of the production system, and quality of the natural resource base.......................154
Figure 32: X-ray diffraction pattern for the profil Ndiaye, Senegal.......................................224
Figure 33: X-ray diffraction pattern for the profil in Fanaye, Senegal...................................228
Figure 34: Schematic drawing of trial locations, location of deposimeters for dust
deposition measurements and sampling sites at WARDAs research
farm in Ndiaye....................................................................................................232
Figure 35: Schematic drawing of trial locations, location of deposimeters for dust
deposition measurements and sampling sites at WARDAs research
farm in Fanaye....................................................................................................232
Figure 36: Schematic drawing of the sampling sites at Lampsar...........................................233
Figure 37: Schematic drawing of the sampling sites at Boundoum.......................................234
Figure 38: Schematic drawing of the sampling sites at Guede..............................................234
|
| any_adam_object | 1 |
| author | Häfele, Stephan Markus |
| author_facet | Häfele, Stephan Markus |
| author_role | aut |
| author_sort | Häfele, Stephan Markus |
| author_variant | s m h sm smh |
| building | Verbundindex |
| bvnumber | BV014065333 |
| classification_rvk | RS 39666 |
| ctrlnum | (OCoLC)174810220 (DE-599)BVBBV014065333 |
| discipline | Geographie |
| format | Thesis Book |
| fullrecord | <?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01698nam a2200397 cb4500</leader><controlfield tag="001">BV014065333</controlfield><controlfield tag="003">DE-604</controlfield><controlfield tag="005">20030127 </controlfield><controlfield tag="007">t</controlfield><controlfield tag="008">011211s2001 gw bd|| m||| 00||| eng d</controlfield><datafield tag="016" ind1="7" ind2=" "><subfield code="a">963108433</subfield><subfield code="2">DE-101</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(OCoLC)174810220</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)BVBBV014065333</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-604</subfield><subfield code="b">ger</subfield><subfield code="e">rakddb</subfield></datafield><datafield tag="041" ind1="0" ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="044" ind1=" " ind2=" "><subfield code="a">gw</subfield><subfield code="c">DE</subfield></datafield><datafield tag="049" ind1=" " ind2=" "><subfield code="a">DE-703</subfield><subfield code="a">DE-188</subfield></datafield><datafield tag="084" ind1=" " ind2=" "><subfield code="a">RS 39666</subfield><subfield code="0">(DE-625)142471:12816</subfield><subfield code="2">rvk</subfield></datafield><datafield tag="100" ind1="1" ind2=" "><subfield code="a">Häfele, Stephan Markus</subfield><subfield code="e">Verfasser</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa</subfield><subfield code="c">vorgelegt von Stephan Markus Häfele. [Hrsg.: Verein zur Förderung der Bodenkunde in Hamburg]</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="a">Hamburg</subfield><subfield code="b">Verein zur Förderung der Bodenkunde</subfield><subfield code="c">2001</subfield></datafield><datafield tag="300" ind1=" " ind2=" "><subfield code="a">IX, 241 S.</subfield><subfield code="b">graph. Darst., Kt. : 21 cm</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="b">n</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="b">nc</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="490" ind1="1" ind2=" "><subfield code="a">Hamburger bodenkundliche Arbeiten</subfield><subfield code="v">49</subfield></datafield><datafield tag="502" ind1=" " ind2=" "><subfield code="a">Hamburg, Univ., Diss., 2001</subfield></datafield><datafield tag="650" ind1="0" ind2="7"><subfield code="a">Reisanbau</subfield><subfield code="0">(DE-588)4129532-8</subfield><subfield code="2">gnd</subfield><subfield code="9">rswk-swf</subfield></datafield><datafield tag="651" ind1=" " ind2="7"><subfield code="a">Westafrika</subfield><subfield code="0">(DE-588)4079203-1</subfield><subfield code="2">gnd</subfield><subfield code="9">rswk-swf</subfield></datafield><datafield tag="655" ind1=" " ind2="7"><subfield code="0">(DE-588)4113937-9</subfield><subfield code="a">Hochschulschrift</subfield><subfield code="2">gnd-content</subfield></datafield><datafield tag="689" ind1="0" ind2="0"><subfield code="a">Westafrika</subfield><subfield code="0">(DE-588)4079203-1</subfield><subfield code="D">g</subfield></datafield><datafield tag="689" ind1="0" ind2="1"><subfield code="a">Reisanbau</subfield><subfield code="0">(DE-588)4129532-8</subfield><subfield code="D">s</subfield></datafield><datafield tag="689" ind1="0" ind2=" "><subfield code="5">DE-604</subfield></datafield><datafield tag="830" ind1=" " ind2="0"><subfield code="a">Hamburger bodenkundliche Arbeiten</subfield><subfield code="v">49</subfield><subfield code="w">(DE-604)BV000019547</subfield><subfield code="9">49</subfield></datafield><datafield tag="856" ind1="4" ind2="2"><subfield code="m">HBZ Datenaustausch</subfield><subfield code="q">application/pdf</subfield><subfield code="u">http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009633055&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA</subfield><subfield code="3">Inhaltsverzeichnis</subfield></datafield><datafield tag="999" ind1=" " ind2=" "><subfield code="a">oai:aleph.bib-bvb.de:BVB01-009633055</subfield></datafield></record></collection> |
| genre | (DE-588)4113937-9 Hochschulschrift gnd-content |
| genre_facet | Hochschulschrift |
| geographic | Westafrika (DE-588)4079203-1 gnd |
| geographic_facet | Westafrika |
| id | DE-604.BV014065333 |
| illustrated | Illustrated |
| indexdate | 2024-07-09T18:57:01Z |
| institution | BVB |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-009633055 |
| oclc_num | 174810220 |
| open_access_boolean | |
| owner | DE-703 DE-188 |
| owner_facet | DE-703 DE-188 |
| physical | IX, 241 S. graph. Darst., Kt. : 21 cm |
| publishDate | 2001 |
| publishDateSearch | 2001 |
| publishDateSort | 2001 |
| publisher | Verein zur Förderung der Bodenkunde |
| record_format | marc |
| series | Hamburger bodenkundliche Arbeiten |
| series2 | Hamburger bodenkundliche Arbeiten |
| spelling | Häfele, Stephan Markus Verfasser aut Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa vorgelegt von Stephan Markus Häfele. [Hrsg.: Verein zur Förderung der Bodenkunde in Hamburg] Hamburg Verein zur Förderung der Bodenkunde 2001 IX, 241 S. graph. Darst., Kt. : 21 cm txt rdacontent n rdamedia nc rdacarrier Hamburger bodenkundliche Arbeiten 49 Hamburg, Univ., Diss., 2001 Reisanbau (DE-588)4129532-8 gnd rswk-swf Westafrika (DE-588)4079203-1 gnd rswk-swf (DE-588)4113937-9 Hochschulschrift gnd-content Westafrika (DE-588)4079203-1 g Reisanbau (DE-588)4129532-8 s DE-604 Hamburger bodenkundliche Arbeiten 49 (DE-604)BV000019547 49 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009633055&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Häfele, Stephan Markus Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa Hamburger bodenkundliche Arbeiten Reisanbau (DE-588)4129532-8 gnd |
| subject_GND | (DE-588)4129532-8 (DE-588)4079203-1 (DE-588)4113937-9 |
| title | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa |
| title_auth | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa |
| title_exact_search | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa |
| title_full | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa vorgelegt von Stephan Markus Häfele. [Hrsg.: Verein zur Förderung der Bodenkunde in Hamburg] |
| title_fullStr | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa vorgelegt von Stephan Markus Häfele. [Hrsg.: Verein zur Förderung der Bodenkunde in Hamburg] |
| title_full_unstemmed | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa vorgelegt von Stephan Markus Häfele. [Hrsg.: Verein zur Förderung der Bodenkunde in Hamburg] |
| title_short | Improved and sustainable nutrient management for irrigated rice based cropping systems in West Africa |
| title_sort | improved and sustainable nutrient management for irrigated rice based cropping systems in west africa |
| topic | Reisanbau (DE-588)4129532-8 gnd |
| topic_facet | Reisanbau Westafrika Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=009633055&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV000019547 |
| work_keys_str_mv | AT hafelestephanmarkus improvedandsustainablenutrientmanagementforirrigatedricebasedcroppingsystemsinwestafrica |