Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya: a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany
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Format: | Buch |
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Sprache: | English |
Veröffentlicht: |
Trier
Geographische Ges. Trier
2000
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Schriftenreihe: | Materialien zur Ostafrika-Forschung
23 |
Schlagworte: | |
Online-Zugang: | Inhaltsverzeichnis |
Beschreibung: | VII, 133 S. graph. Darst. 6 Kt.-Beil. |
ISBN: | 3921599431 |
Internformat
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Datensatz im Suchindex
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adam_text | Titel: Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitori
Autor: Hornetz, Berthold
Jahr: 2000
Table of contests
Page
Table of contents I
List of tables ID
List of figures IV
Appendix VI
Preface and acknowledgements VI
1. General introduction 1
2. Project design and research work (C.A. Shisanya, B. Hornetz) 3
2.1 Experimental sites, layout and methodological approach 3
2.1.1 Kiboko Experimental Field Station (KARI/NRRC/ICRISAT Kiboko) 3
2.1.1.1 Location and climate 3
2.1.1.2 Soils 3
2.1.1.3 Experimental design 5
2.1.1.4 Methods in field experiments 7
2.1.2 Greenhouse at the Department of Botany, Kenyatta University/Nairobi 11
2.1.3 Climatological laboratory of the University of Trier 13
2.1.3.1 Ecophysiological experiments 13
2.1.3.2 Experiments on N2 fixation of Vigna radiata and Phaseolus vulgaris 15
2.1.3.3 Numerical analysis: simulation modelling with MARCROP,
temporal analysis (ENSO model) and spatial performance with
GIS Maplnfo 16
2.2 Time schedule and evaluation of experimental work 17
2.2.1 Field experiments at Kiboko (and greenhouse experiments at
KU/Nairobi) 17
2.2.1.1 Long rains 1997 17
2.2.1.2 Short rains 1997/98 ( El Niño rains ) 18
2.2.1.3 Longrains 1998 18
2.2.1.4 Short rains 1998/99 20
2.2.1.5 Long rains 1999 22
2.2.1.6 Short rains 1999/2000 22
2.2.2 Laboratory experiments at Trier University 22
3- Results of the project work 24
3.1 Biological nitrogen fixation in selected legumes of the semi-arid
Makueni District of southeast Kenya (J.M. Maingi, C.A. Shisanya, N.M.
Gitonga, B. Hornetz) ^4
I
3.2 N2 fixation in maize-legume cropping systems in
SE-Kenya, N in maize-cropping systems and soil nutrient changes 34
3.2.1 Nitrogen fixation by Vigna radiata L. Wilczek in pure and mixed
stands in SE-Kenya (N.M. Gitonga, C.A. Shisanya, B. Hometz, J.M. Maingi) 34
3.2.2 Nitrogen fixation by common bean (Phaseolus vulgaris L.) in pure and
mixed stands in semi-arid south-east Kenya (J.M. Maingi, C.A. Shisanya,
N.M. Gitonga, B. Hoinetz) ^5
3.2.3 I5N analyses and calculations (B. Hometz, N.M. Gitonga) 61
3.3 Soil microbiological/enzyme activities and rock powder
applications 66
3.3.1 Field assays at Kiboko(M. Eichinger, B. Hometz) 66
3.3.2 laboratory assays (M. Eichinger, B. Hometz) 68
3.3.3 Temporal dynamics of soil microbial biomass-C, -N, microbial activities,
and the overall feeding activity through the application of different rock-
powders during the rainy season in a semi-arid environment of SE-Kenya
(M. Eichinger, C. Emmerling, B. Hometz, C.A. Shisanya, N.M. Gitonga) 70
3.4 Ecophysiological and phenological studies of defined crops under controlled
(lab) conditions, simulation modelling and GIS performance 84
3.4.1 Germination and seedling emergence under different soil temperatures
(B. Hometz) 84
3.4.2 Crop water relationships and thermal adaptation of kathika beans
(Phaseolus vulgaris L.) and green grams (Vigna radiata L. Wilczek)
with special reference to temporal patterns of potential growth in the
drylands of SE-Kenya (B. Hometz, C.A. Shisanya, N.M. Gitonga) 88
3.4.3 Tempo-spatial patterns of yield potentials and risks of crop failures in
the drylands of E-Kenya (GIS Maplnfo performance) (B. Hometz) 99
3.4.4 Effects of soil moisture on growth, yields and nitrogen fixation in three
selected grain legumes (C.A. Shisanya, N.M. Gitonga, B. Hometz) 101
3.5 Approaches for measuring/estimating the effectivity
of N2 fixation and a newly developped application form
(under laboratory conditions) 109
3.5.1 Methods for determining the effectivity of N2 fixation (C. Russok) 109
3.5.2 Optimierung der Effektivität der biologischen Stickstofffixierung
ausgewählter Kömerleguminosen an tropischen Margmalstandorten
mit Hilfe einer neuentwickelten rhizobiellen Applikationstechnik
(Optimization of the BNF effectivity of selected legumes in semi-arid
tropical agro-ecosystems by means of a newly developed inoculation
method) (B. Hometz, C. Russok) 112
3.6 Further physiological and microbiological studies 122
3.6.1 Stress physiological patterns of different legumes and development of LAI
in sole and intercropped plant stands at Kiboko (B. Hometz) 122
3.6.2 Bioassay with nodulating and non-nodulating lines of Glycine max.
(B. Hometz) 126
4. Evaluation of results and recommendations 131
5. Final comments 132
List of tables
Table 2.1: Nitrogen free nutrient solution (Source: SOMASEGARAN et al., 1985) 12
Table 3.1.1: Nodulation status of green gram and common bean grown in the greenhouse
in soils obtained from Kiboko 26
Table 3.1.2: Nodulated units in common bean MPN experiment 27
Table 3.1.3: Nodulated units in green gram MPN experiment 27
Table 3.1.4: Gram stain reaction and performance of Rhizobium leguminosarum bv. phaseoli
and Bradyrhizobium sp. on various media 28
Table 3.1,5a: Effectiveness of rhizobia in N fixation in common bean 29
Table 3.1,5b: Effectiveness of rhizobia in N fixation in green gram 29
Table 3.2.1.1 : Nodulation of green gram plants inoculated with varying dilutions of soil 38
Table 3.2.1.2: Effects of maize intercrop on growth and nodulation of green grams 21 days after
emergence (21 DAE) 38
Table 3.2.1.3: Effects of intercropping with green grams on the growth of maize 21 days after
emergence (21 DAE) 39
Table 3.2.1.4: Effects of maize intercrop on growth and nodulation of green grams 42 days after
emergence (42 DAE) 39
Table 3.2.1.5: Effects of green gram intercrop on the growth of maize 42 days after emergence
(42 DAE) 40
Table 3.2.1.6: Effects of maize intercrop on the growth and nodulation of green gramslOO days
after emergence (100 DAE) 40
Table 3.2.1.7: Effects of green gram intercrop on maize 110 days after emergence (110 DAE) 40
Table 3.2.1.8: Effects of intercropping maize and green grams cn their yield 41
Table 3.2.2.1: Seed yield of common beans grown at Kiboko, Kenya, during the long and
short rainy season of 1997 50
Table 3.2.3.1: 1SN plant material analyses and calculations for short rains (SR) 1997, long rains
(LR) 1998 and short rains (SR) 1998 in maize and legumes at Kiboko/SE-Kenya 63
Table 3.2.3.2: Summarized data of 15N analyses and calculations 1997-1999
(Kiboko, SE-Kenya) 65
Table 3.3.1.1: Soil transpiration at the begin of the long rains 1997 (3.4.-9.5.97;
EICHINGER, 1999) 66
Table 3.3.1.2: Soil transpiration during the long rains 1997 (18.-26.5.97; EICHINGER, 1999) 66
Table 3.3.1.3: Soil transpiration after the long rains 1997 (2.-7.7.97; EICHINGER, 1999) 67
Table 3.3.1.4: Bait-Lamina-Assay during the first part of the long rains 1997 (EICHINGER,
1999) 67
Table 3.3.1.5: Bait-Lamina-Assay during the second part of the long rains 1997 (EICHINGER,
1999) 68
M
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spelling | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany Berthold Hornetz ; Chris A. Shisanya ; Nkanata M. Gitonga Trier Geographische Ges. Trier 2000 VII, 133 S. graph. Darst. 6 Kt.-Beil. txt rdacontent n rdamedia nc rdacarrier Materialien zur Ostafrika-Forschung 23 Arid regions agriculture Research Kenya Arid regions Research Kenya Food crops Ecophysiology Kenya Soil fertility Research Kenya Autökologie (DE-588)4143684-2 gnd rswk-swf Bodenfruchtbarkeit (DE-588)4007369-5 gnd rswk-swf Kenia Südost (DE-588)4329417-0 gnd rswk-swf Kenia Südost (DE-588)4329417-0 g Bodenfruchtbarkeit (DE-588)4007369-5 s Autökologie (DE-588)4143684-2 s DE-604 Hornetz, Berthold 1954- Sonstige (DE-588)115511962 oth Shisanya, Chris A. Sonstige oth Gitonga, Nkanata M. Sonstige oth Materialien zur Ostafrika-Forschung 23 (DE-604)BV000005669 23 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010342960&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
spellingShingle | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany Materialien zur Ostafrika-Forschung Arid regions agriculture Research Kenya Arid regions Research Kenya Food crops Ecophysiology Kenya Soil fertility Research Kenya Autökologie (DE-588)4143684-2 gnd Bodenfruchtbarkeit (DE-588)4007369-5 gnd |
subject_GND | (DE-588)4143684-2 (DE-588)4007369-5 (DE-588)4329417-0 |
title | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany |
title_auth | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany |
title_exact_search | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany |
title_full | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany Berthold Hornetz ; Chris A. Shisanya ; Nkanata M. Gitonga |
title_fullStr | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany Berthold Hornetz ; Chris A. Shisanya ; Nkanata M. Gitonga |
title_full_unstemmed | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany Berthold Hornetz ; Chris A. Shisanya ; Nkanata M. Gitonga |
title_short | Studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi-arid areas of Southeast Kenya |
title_sort | studies on the ecophysiology of locally suitable cultivars of food crops and soil fertility monitoring in the semi arid areas of southeast kenya a final report on a collaborative research project between kenyatta university nairobi kenya and the university of trier germany |
title_sub | a final report on a collaborative research project between Kenyatta University, Nairobi, Kenya, and the University of Trier, Germany |
topic | Arid regions agriculture Research Kenya Arid regions Research Kenya Food crops Ecophysiology Kenya Soil fertility Research Kenya Autökologie (DE-588)4143684-2 gnd Bodenfruchtbarkeit (DE-588)4007369-5 gnd |
topic_facet | Arid regions agriculture Research Kenya Arid regions Research Kenya Food crops Ecophysiology Kenya Soil fertility Research Kenya Autökologie Bodenfruchtbarkeit Kenia Südost |
url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=010342960&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
volume_link | (DE-604)BV000005669 |
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