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Page 1: Deutscher Tropentag 2002 · Deutscher Tropentag 2002 ... Organisation of Sustainable Breeding Schemes for Smallholder Dairy Farmers in ... from IITA Germplasm Based on Characterization
Page 2: Deutscher Tropentag 2002 · Deutscher Tropentag 2002 ... Organisation of Sustainable Breeding Schemes for Smallholder Dairy Farmers in ... from IITA Germplasm Based on Characterization

Welcome toDeutscher Tropentag 2002

at the University of Kassel-Witzenhausen

Prof. Dr. Rolf-Dieter PostlepPresident of the University of Kassel

Dear Guests,

I am very pleased to welcome you to the “Deutscher Tropentag 2002“ at the

University of Kassel, Witzenhausen. Moreover, I am particularly proud that the

“Deutscher Tropentag 2002“ will this year be held in Witzenhausen which has a

long tradition in tropical and subtropical agriculture.

Though the University of Kassel itself is still a young institution, founded 30

years ago, the subject of tropical and subtropical agriculture has already been

dealt with since 1898. Firstly the “Deutsche Kolonialschule für Landwirtschaft,

Handel und Gewerbe“ as the predecessor institution of the Faculty of Agriculture

provided the frame for training and other activities. Today, subject to many

changes during the last 100 years, training, research and scientific activities in

tropical and subtropical agriculture are carried out by the various departments

of the University of Kassel.

As president of a university which has, besides interdisciplinarity and practical

orientation, declared the international exchange in education, research and

development as leitmotif, I am particularly pleased that our university is able to

offer an adequate forum for the most recent topics in research and education in

tropical and subtropical agriculture for the numerous guests from all over the

world.

In addition, I wish all involved participants, organizations, institutions and

stakeholders to meet a productive environment at the University of Kassel,

Witzenhausen for fruitful discussions dealing with the manifold problems in

their international and interdisciplinary dimension as well as for the development

of solution alternatives. The new orientation of Witzenhausen on ecological

agriculture which is today also important in the field of tropical and subtropical

agriculture may perhaps lead to new priorities in the debate.

In this sense, I wish the “Deutscher Tropentag“ a lot of success and exciting

and fruitful discussions.

Editor: Centre for International Rural DevelopmentFaculty No. 11 - University of KasselSteinstraße 19D-37213 WitzenhausenTel.: +49 (0)5542-98-1216Fax: +49 (0)5542-98-1313email: [email protected]

Print: Tutte Druckerei GmbHWaldstraße 53D-94121 Salzweg

Layout: Dr. Andreas DeiningerElke MakeletChristian Schellert

October 2002

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Challenges to Organic Farming and Sustainable Land Use

in the Tropics and Subtropics

University of Kassel-Witzenhausen, GermanyOctober 9 - 11, 2002

Scientific Sessions:

Scientific Board

Prof. Dr. Mathias Becker, Institute of Plant Nutrition, BonnProf. Dr. Kurt Johannes Peters, Department of Animal Breeding in the Tropics

and Subtropics, BerlinProf. Dr. Werner Doppler, Institute of Agricultural Economics and Social

Sciences in the Tropics and Subtropics, HohenheimProf. Dr. Manfred Zeller, Institute of Rural Development, GöttingenProf. Dr. Rainer Georg Jörgensen, Department of Soil Biology and Plant Nutriti-

on, WitzenhausenProf. Dr. Beatrice Knerr, Department of Development Economics and Agricultural

Policy, WitzenhausenProf. Dr. Jürgen Heß, Department of Organic Farming and Cropping Systems,

Witzenhausen

Session I: Sustainable Plant Production and BiodiversityVenue: Lecture hall ‘Neue Aula’ /Lecture room ‘H1’, pages 5/13 (Th/Fr)

Session II: Animal Husbandry and WelfareVenue: Lecture room ‘H23’, pages 7/13 (Th/Fr)

Session III: Farming Systems and Management, Rural DevelopmentVenue: Lecture hall ‘Alte Aula’, pages 9/14 (Th/Fr)

Session IV: Post Harvest Technology, Marketing and PolicyVenue: Lecture room ‘H13’, pages 11/15 (Th/Fr)

Scientific Coordination: Prof. Dr.-Ing. Rüdiger KrauseProf. Dr. Andreas Bürkert

Logistics: Dr. Andreas Deininger Barbora HulovaUte Dietrich Elke MakeletHans Hemann Christian Schellert

ATSAF: Prof. Dr. Volker HoffmannRosina Binder

Günther EngelTown Mayor of Witzenhausen

Welcome toDeutscher Tropentag 2002

in the Town of Witzenhausen

Dear Guests,

I wish to welcome you to Witzenhausen to the “Deutscher Tropentag 2002“.The Town of Witzenhausen is very proud that the conference is organized forthe first time by the University of Kassel at the Faculty of Agriculture,Witzenhausen.For a small town such as ours, the University is something special and aninternational conference an unique event. Being the host for both makes usdifferent from many other small towns in Germany, and the great interest theconference raises amongst scientists throughout the world shows that the topicsdealt with have been selected well.The centenary of the Tropical Greenhouse and the 5th day of the CultivatedPlant, celebrated with a comprehensive exhibition on pumpkins and a pumpkin,potato and elder fair, have not at least the aim to connect agricultural scientifictraditions with forward-looking innovations in and originating from Witzenhausen.I wish all the guests an interesting stay during the “Deutscher Tropentag 2002“in Witzenhausen.With kind regards

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Thursday, October 10, 2002 5

Thematic Scientific Sessions

Venue: Neue Aula Session I: Sustainable Plant 8.00 - 17.35

Nordbahnhofstr. 1a Production and Biodiversity

Coordinator: Prof. Dr. Mathias Becker

Subsession 1a) 8.00 - 10.20

Organic Farming

Convenor: Prof. Dr. Joachim Sauerborn, Hohenheim8.00 Keynote: Dr. REINHOLD G. MUSCHLER: Organic Coffee, Biodiversity and

Agrochemicals: the Use of Shade Trees for Low-Input CoffeeProduction in Central America

Oral Presentations

8.30 JOHANNES KOTSCHI: Organic Agriculture in Rural Development - WhoseAgenda?

8.50 N. N.9.10 SAIFUL MD. ISLAM: Prospects and Problems of Local Level Organic

Vegetable Production in Bangladesh9.30 HANS RUDAT: Experiences with System of Rice Intensification (SRI) in

Cambodia

9.50 Brief Introduction of Posters

Coffee Break 10.20 - 11.00

Subsession 1b) 11.00 - 12.10

Irrigated and Dryland Farming

Convenor: Dr.-Ing. Michael Zöbisch, Bangkok11.00 Keynote: Dr. PETRA DÖLL: Water for Agriculture - A Global Systems

Analysis Perspective

Oral Presentations

11.30 ARMIN RIESER: The Dynamics of Water User Associations in a Large-Scale Irrigation System in Thailand

11.50 EL HOUSSAIN BAALI: Water Pumping for Irrigation in Moroccan Oasis

Lunch Break 12.10 - 14.00

4 Wednesday, October 9, 2002

Venue: Bürgerhaus Registration 12.00 - 13.00

Opening Ceremony

13.00 Prof. Dr.-Ing. Rüdiger Krause, Director of the Centre for Internati-onal Rural Development, Witzenhausen

Prof. Dr. Rolf-Dieter Postlep, President of the University of Kassel

13.30 Dr. Dennis Garrity, Director General of the International Centre forResearch in Agroforestry (ICRAF), Nairobi

Plenary Speech:Attacking the Tragedy of Hunger and Desperate Poverty throughPro-Poor Agricultural Science

14.15 Prof. Dr. Eduardo Salgado, Institute for Technology in the Tropics,University of Applied Sciences Cologne

Plenary Speech:The Possibility of Sustainable Water Management under WaterScarcity Conditions

Coffee Break 15.00 - 15.30

Eiselen Foundation Awards 15.30 - 17.00Hans H. Ruthenberg-Graduate-Awards

Josef G. Knoll-Science-Award

Poster Session 17.00 - 18.00

18.00 Prof. Dr. Christian Bonte-Friedheim, Humboldt University Berlin

Plenary Speech:Global, Regional and National Fora for Agricultural and Development-Oriented Research

Venue: S1 Assembly of ATSAF Members 18.30Steinstr. 19

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Thursday, October 10, 2002 7

16.05 GUY-ERICK AKOUÈGNON: Local Perspectives on Legume Based Technologies:a Holistic Approach to Target and to Promote the Utilization ofHerbaceous Legumes in the Derived and Northern Guinea Savannahsof West Africa

16.25 MARIAM AKHTAR-SCHUSTER: Typical Fence-Line Contrasts - Land Degra-dation in Southern Namibia

16.45 JÜRGEN KERN: Basis for a Sustainable Use of the Amazon FloodplainForest

17.05 Brief Introduction of Posters

Venue: Refectory Conference Dinner 19.30

(Mensa)

Thematic Scientific Sessions

Venue: H23 Session II: Animal Husbandry 8.00 - 17.35

Steinstr. 19 and Welfare

Coordinator: Prof. Dr. Kurt J. Peters

Subsession 2a) 8.00 - 10.20

Animal Husbandry and Breeding

Convenor: Dr. Brigitte Kaufmann, Hohenheim8.00 Keynote: PÉRIN SAINT ANGE: Livestock Development for Rural Poverty

Reduction: Issues and Options

Oral Presentations

8.30 CLEMENS WOLLNY: The State of Poultry Production and Breeding Sys-tems in Malawi

8.50 MARIA WURZINGER: Genetics of Growth Traits in Bolivian Llamas9.10 BIRGIT ZUMBACH: Organisation of Sustainable Breeding Schemes for

Smallholder Dairy Farmers in the Highlands of Ethiopia9.30 RENATE L. DÖRFLER: A Critical Reflection on Methodological Traditions in

the Assessment of Animal Welfare with Relevance to Tropical Live-stock Agriculture

9.50 Brief Introduction of Posters

Coffee Break 10.20 - 11.00

6 Thursday, October 10, 2002

Subsession 1b) continued 14.00 - 15.10

14.00 EIKE LUEDELING: The Hydrology of Mountain Oases in Northern Oman14.20 FOLKARD ASCH: Root-Shoot-Communication in Drought-Stressed Maize

Is Modified by Atmospheric Conditions

14.40 Brief Introduction of Posters

Subsession 1c1) 15.15 - 17.35

Resource Management and Biotechnology I:

Genetic Resources, Neglected Crops and Seeds

Convenor: Dr. Sabine Golombek, Witzenhausen15.15 Keynote: Prof. Dr. KARL HAMMER

Oral Presentations

15.45 ZBYNEK POLESNY: Tropical and Subtropical Plants with SweeteningProperties: the Potential Source of Low-Calorie Sweeteners

16.05 JENS GEBAUER: The Potential of Under-Utilised Fruit Trees in CentralSudan

16.25 ADEL H. ABDEL GHANI: Estimation of Outcrossing Rate in Hordeumspontaneum and Barley Landraces from Jordan

16.45 WERNER SCHENKEL: Development of a Bambara Groundnut Core Collectionfrom IITA Germplasm Based on Characterization and EvaluationData

17.05 Brief Introduction of Posters

Venue: Refectory Conference Dinner 19.30

(Mensa)

Venue: H1 Subsession 1c2) 15.15 - 17.35

Nordbahn- Resource Management and Biotechnology II:

hofstr. 1a Land and Crop Management

Convenor: Prof. Dr. Christian Richter, Witzenhausen15.15 Keynote: DR. MARCO STARK: Blending Local Knowledge and

Agricultural Science for Integrated Natural Resource Manage-ment in the Southeast Asian Uplands

Oral Presentations

15.45 JAMES OWINO: Performance of Narrow Strips of Vetiver Grass (Vetiveriazizanioides) and Napier Grass (Pennisatum purpureum) as Barriersagainst Runoff and Soil Sediment Loss on a Clay Loam Soil (Andosol)in Kenya

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Thursday, October 10, 2002 9

Thematic Scientific Sessions

Venue: Alte Aula Session III: Farming Systems 8.00 - 17.35

Nordbahnhofstr. 1a and Management,

Rural Development

Coordinator: Prof. Dr. Werner Doppler

Subsession 3a) 8.00 - 10.20

Sustainable Use of Farm Resources

Convenor: PD Dr. Gertrud Buchenrieder, Hohenheim8.00 Keynote: Dr. HEINZ-PETER WOLFF: Challenges towards the Sustainable

Use of Farm Resources

Oral Presentations

8.30 LUQMAN ABIODUN AKINBILE: Determinants of Farmers Use of SustainableConservation Practices in Osun State, Nigeria

8.50 NITAYA KIJTEWACHAKUL: Forest Health under Institutional Developmentfor Community-Based Upland Resource Management: Comparisonof Villages in Lowland and Upland Settlement, Northern Thailand

9.10 BARBARA ADOLPH: Soil Fertility Management in Semi-Arid India: Its Rolein Agricultural Systems and the Livelihoods of Poor People

9.30 ADEOLA AKINSANMI: Organic Manure Use among Smallholders in theRainforest of Southeast Nigeria

9.50 Brief Introduction of Posters

Coffee Break 10.20 - 11.00

Subsession 3b) 11.00 - 12.10

Diversity and Sustainability

of Household Income

Convenor: Prof. Dr. Jürgen Heß, Witzenhausen11.00 Keynote: Prof. Dr. Dr. h.c. FRANZ HEIDHUES: Diversity and Sustainability

of Household Income

Oral Presentations

11.30 ANJA BLUME: Managing Agrobiodiversity: Successful Farmers asEnvironmental Agents. A Case Study from Kenya and Tanzania

11.50 CHARITY IRUNGU: On Targeting and Outreach of NGDO Safety Net Pro-grammes: Evidence from Rural Kenya

Lunch Break 12.10 - 14.00

8 Thursday, October 10, 2002

Subsession 2b) 11.00 - 12.10

Livestock Production and Nutrition

Convenor: Dr. Eva Schlecht, Hohenheim11.00 Keynote: Dr. SALVADOR FERNANDEZ-RIVERA: Livestock Systems and

Nutrient Cycling

Oral Presentations

11.30 UTE LEMKE: Characterisation of Smallholder Pig Production Systems inMountainous Areas of North Vietnam

11.50 MARION ADAMS: Indigenous Characterization of Local Camel Populationsand Breeding Methods of Pastoralists in Northern Kenya

Lunch Break 12.10 - 14.00

Subsession 2b) continued 14.00 - 15.10

14.00 ANDREAS JENET: Lifetime Under-Nutrition and Lactation Performanceof Zebu and Zebu x Holstein Cows in the Tropics

14.20 HANS-DIETER HESS: Intake, Digestion and Duodenal Nitrogen Flow inSheep Fed Tropical Diets Supplemented with Fruits of Sapindussaponaria

14.40 Brief Introduction of Posters

Subsession 2c) 15.15 - 17.35

Disease Control and Hygienics

Convenor: Prof. Dr. Dr. Helge Böhnel, Göttingen15.15 Keynote: Prof. Dr. KARL-HANS ZESSIN: Implications of Globalization on

Hygienic Measures in Animal Disease Control

Oral Presentations

15.45 ANKE GROSSE-HERRENTHEY: Botulism of Cattle in Brazil, Diagnosis andVaccination

16.05 RICHARD SOVJÁK: Main Problems of Brucellosis in Zambia16.25 KURT-JOHANNES PETERS: Effect of Milking Strategies on Milk Yield and

Udder Health of Crossbred Dairy Cattle in Thailand16.45 RAGY SAMY SELEIM: Salmonella Infection in Calves: Virulence Proteins

and its Immunogenic Properties

17.05 Brief Introduction of Posters

Venue: Refectory Conference Dinner 19.30

(Mensa)

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10 Thursday, October 10, 2002

Subsession 3b) continued 14.00 - 15.10

14.00 STEFAN SCHWARZE: Determinants of Income Generation Activities of RuralHouseholds in Central Sulawesi, Indonesia

14.20 AXEL DRESCHER: Homegardens in African Spaces - Management ofSustainable Production Systems and Strategies for HouseholdLivelihood Security

14.40 Brief Introduction of Posters

Subsession 3c) 15.15 - 17.35

Strategy, Infrastructure

Convenor: Dr. Kurt Steiner, Eschborn15.15 Keynote: Prof. Dr. HARTMUT GAESE: Strategic Challenges to Higher

Education in Agricultural Sciences for Sustainable Land UseSys-tems Development

Oral Presentations

15.45 BENEDIKT KORF: Rural Livelihoods at Risk: Land Use and Coping Strategiesof War-Affected Communities in Sri Lanka

16.05 SABINE HÖYNCK: Farming Systems in Northeast Brazil: Threats and Chan-ces from Globalization

16.25 PETER LENTES: Testing GIS/RS Based Approaches for Estimating VillageBoundaries - the Case of a Region in North-Western Vietnam

16.45 VLADIMIR KREPL: Strategy in Ozone Depletion Substances in Agriculturein Developing Countries (Montreal Protocol)

17.05 Brief Introduction of Posters

Venue: Refectory Conference Dinner 19.30

(Mensa)

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3a: Sustainable Use ofFarm Resources

Alte Aula page 9

3b: Diversity and Sus-tainability ofHousehold Income

Alte Aula page 9

3c: Strategy, Infra-structure

Alte Aula page 10

3d: Forestry,Agroforestry

Alte Aula page 14

4a: Post Harvest Technology, Food

Quality and Certification

H13 page 11

4b: Market Structures andFair Trade

H13 page 11

4c: Research, Extension andTraining

H13 page 12

4d: Global Policy and Economy

H13 page 15

1a: Organic Farming

Neue Aula page 5

1c1: Genetic Re-

sources, NeglectedCrops and Seeds

Neue Aula page 6

1c2: Land and Crop

Management

H1 page 6

1d: Precision Agri-culture, Modelling andLand Use Planning

Neue Aula page 13

1a: Irrigated and Dry-land Farming

Neue Aula page 5

2a: Animal Husbandryand Breeding

H23 page 7

2b: Livestock Produc-tion and Nutrition

H23 page 8

2c: Disease Control andHygienics

H23 page 8

2d: AquacultureSystems

H23 page 13

Opening Ceremony (p. 4)

Plenary: Bürgerhaus

Closing Ceremony (p. 15)

Plenary: Neue Aula

Thematic Scientific Sessions

Thur

sday

Friday

Wedne

sday

Program Structure DTT 2002

Challenges to Organic Farming and Sustainable Land Use in the Tropics and Subtropics

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Thursday, October 10, 2002 11

Thematic Scientific Sessions

Venue: H13 Session IV: Post Harvest Technology, 8.00 - 17.35

Steinstr. 19 Marketing and Policy

Coordinator: Prof. Dr. Manfred Zeller

Subsession 4a) 8.00 - 10.20

Post Harvest Technology, Food Quality

and Food Certification

Convenor: Prof. Dr. Werner Mühlbauer, Hohenheim8.00 Keynote: FRANÇOIS MAZAUD: Niche Markets: an Opportunity for

Developing Countries

Oral Presentations

8.30 MAURICE SCHILL: Development of a Methodology to Analyse the PostHarvest Systems

8.50 SANDRA BECK: The Traditional Use of Uncultivated Plants. DoesCertification Increase the Utilisation of Local Plant Resources?

9.10 PETRA SCHILL: Developing Country Requirements for the Improvementof Food Quality and Safety

9.30 DANIEL VILDOZO: Certification of Organic Foodstuffs in DevelopingCountries

9.50 Brief Introduction of Posters

Coffee Break 10.20 - 11.00

Subsession 4b) 11.00 - 12.10

Market Structures and Fair Trade

Convenor: Prof. Dr. Beatrice Knerr, Witzenhausen11.00 Keynote: Prof. Dr. MICHAEL KIRK: How Do Agrarian and Agricultural

Reforms Influence Market Structures and Fair Trade?

Oral Presentations

11.30 NICOLAS GENNRICH: The Impact of Microenterprises on PovertyReduction: the Case of El Quiché - Guatemala

11.50 VOLKER HAMANN: Agricultural Development in Zacatecas, Mexico

Lunch Break 12.10 - 14.00

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Friday, October 11, 2002 13

Thematic Scientific Sessions

Venue: Neue Aula Session I: Sustainable Plant 8.00 - 10.20

Nordbahnhofstr. 1a Production and Biodiversity

Coordinator: Prof. Dr. Mathias Becker

Subsession 1d)

Precision Agriculture, Modelling and

Land Use Planning

Convenor: Dr. Ralf Schlauderer, Potsdam8.00 Keynote: Prof. Dr. ANCHA SRINIVASAN: Precision Agriculture, Modelling

and Land Use Planning

Oral Presentations

8.30 ESMAT AL-KARADSHEH: Precision Irrigation: New Strategy for IrrigationWater Management

8.50 THOMAS GAISER: Simulation of Biomass Production and Soil WaterDynamics on Highly Weathered, Acidic Soils in the Tropics withthe EPICSEAR Model

9.10 LA KARIMUNA: Agricultural Zoning Based on Biophysical Land Propertiesin Southeast Sulawesi, Indonesia

9.30 CRISTIAN RODOLFO FELDKAMP: Empirical Validation of Applied ForageModels

9.50 Brief Introduction of Posters

Thematic Scientific Sessions

Venue: H23 Session II: Animal Husbandry 8.00 - 10.20

Steinstr. 19 and Welfare

Coordinator: Prof. Dr. Kurt J. Peters

Subsession 2d)

Aquaculture Systems

Convenor: Prof. Dr. Klaus Becker, Hohenheim8.00 Keynote: Dr. GEORGE FRANCIS: Perspectives in the Search for Future

Fish Feed Ingredients

Oral Presentations

8.30 JOHNNY ONYEMA OGUNJI: Preliminary Evaluation of Jackbean (Canavaliaensiformis L. DC) Seed Meal as a Substitute for Fishmeal in Dietsfor Clarias gariepinus (Burchell, 1822)

12 Thursday, October 10, 2002

Subsession 4b) continued 14.00 - 15.10

14.00 DANIEL TSEGAI: Determinants of Urban Household Demand for Cassavaand Cassava Products in Kaduna, Northern Nigeria

14.20 JOCHEN STATZ: The Nuts and Bolts of a Theory on NTFP Trade andMarketing - the Case of Shea (Vitellaria paradoxa) Products fromSub-Saharan Africa

14.40 Brief Introduction of Posters

Subsession 4c) 15.15 - 17.35

Research, Extension and Training

Convenor: PD Dr. Marlene Diekmann, Bonn15.15 Keynote: Dr. HEIKE MICHELSEN: Stakeholder Involvement in Research,

Extension, and Training: Option or Necessity

Oral Presentations

15.45 SIMON IBANA: A Participatory Appraisal of Imperata ManagementStrategies for Sustainable Land-Use in the Sub-Humid Savannahof Nigeria

16.05 D. AROKODOUN: Institutionalizing Demand-Driven Agricultural Research:Experiences with the Management Cycle of Agricultural Researchin Benin

16.25 JOHN MBURU: Wildlife Co-Management in Kenya: an Empirical Analysisof Landowners’ Incentives for Participation

16.45 FRANK HARTWICH: Agroindustry R&D Partnerships in Chile and Uruguay:Cases of Public-Private Partnerships for Agroindustrial Development

17.05 Brief Introduction of Posters

Venue: Refectory Conference Dinner 19.30

(Mensa)

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Friday, October 11, 2002 15

Thematic Scientific Sessions

Venue: H13 Session IV: Post Harvest Technology, 8.00 - 10.20

Steinstr. 19 Marketing and Policy

Coordinator: Prof. Dr. Manfred Zeller

Subsession 4d)

Global Policy and Economy

Convenor: Prof. Dr. Manfred Zeller, Göttingen8.00 Keynote: Dr. CHRISTOPH KOHLMEYER: Global Policy and Economy

Oral Presentations

8.30 ANDRÉ HAEHNKE: Modelling the Individual and Collective Aspects ofMigrants’ Decisions in Pakistan

8.50 RUTH-SHARIFA DJEDJE: Opium at the Interface. Global and LocalInteractions in the Golden Triangle

9.10 HEINZ LOOS: Mechanised Conservation Farming9.30 IMAD ABDEL KARIM: The Impact of the Uruguay Round Agreement on

Agriculture on Sudan’s Agricultural Trade

9.50 Brief Introduction of Posters

Venue: Neue Aula Closing Ceremony 10.20 - 11.15Nordbahnhofstr. 1a

Panel Discussion 10.20

Chair: Prof. Dr. Andreas Bürkert

Discussants: Prof. Dr. Mathias BeckerProf. Dr. Werner DopplerProf. Dr. Kurt J. PetersProf. Dr. Manfred Zeller

Poster Award 10.50Prof. Dr. Volker Hoffmann

Closing Remarks 11.00

14 Friday, October 11, 2002

8.50 ANNE VAN DAM: Quantitative Estimates of Ecological Sustainability inUpland Integrated Agriculture - Aquaculture Systems in thePhilippines

9.10 PERUMAL SIDDHURAJU: Nutritional Quality Evaluation of Moringa (Moringaoleifera Lam.) Leaves as an Alternative Protein Source for Tilapia(Oreochromis niloticus L.)

9.30 ALBERT ALTENA: Effects of Rearing Temperatures on Sex Ratios in Tilapia,Oreochromis niloticus L., Investigations on a Local Population fromLake Victoria in Kenya

9:50 KAREN GÜTHLER: Response of Dietary Phosphorus Concentration andPhytase Supplementation on Weight Gain and Phosphorous Utilisationin Gilthead Seabream (Saprus aurata)

10.10 Brief Introduction of Posters

Thematic Scientific Sessions

Venue: Alte Aula Session III: Farming Systems 8.00 - 10.20

Nordbahnhofstr. 1a and Management,

Rural Development

Coordinator: Prof. Dr. Werner Doppler

Subsession 3d)

Forestry, Agroforestry

Convenor: Dr. Uwe Muuß, Göttingen8.00 Keynote: Prof. Dr. JÜRGEN PRETZSCH: Co-evolution between Ecological

and Social Systems in Tropical Forest Management. Elements of anAction-Oriented Theoretical Approach

Oral Presentations

8.30 REINHOLD GLAUNER: Sustainability of Forest Product Use in Zimbabwe8.50 KINDEYA GEBREHIWOT: Natural Regeneration of Boswellia papyrifera (Del.).

A Key Dryland Tropical Species in Northern Ethiopia9.10 GÖTZ SCHROTH: Traditional Rubber Agroforests in Amazonia - a Model

for Sustainability and Forest Conservation in an Ancient FrontierRegion

9.30 DAVID SIRIRI: Doubling Returns to Land and Labour? The Potential ofImproved Tree Fallow in the Humid Highlands of SouthwesternUganda

9.50 Brief Introduction of Posters

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General Information 17

Accommodation:If you reserved a room beforehand in one of the recommendedhotels or using our online registration form for campus guestrooms,the following addresses will help you, together with the map ofWitzenhausen on the following page:

Burg-Hotel Hotel ‘Stadt Witzenhausen’Oberburgstr. 10 Am Sande 837213 Witzenhausen 37213 Witzenhausenphone: 05542-2506 phone: 05542-9345-0fax: 05542-3200 fax: 05542-9345-147email: [email protected] [email protected]

Hotel DEULA Campus GuestroomsAm Sande 20 Steinstr. 1937213 Witzenhausen 37213 Witzenhausenphone: 05542-6003-11 phone: 05542-98-1574fax: 05542-6003-16email: [email protected]

If you have not made any reservation yet, please refer to theregistration desks upon arrival or contact the Tourist InformationOffice in Witzenhausen directly:

Tourist-Information WitzenhausenErmschwerder Str. 237213 Witzenhausenphone: 05542-6001-0fax: 05542-6001-23email: [email protected]

In cases of emergency:

Ambulance/hospital:Steinstr. 18-20 (opposite the campus building Steinstr. 19)37213 Witzenhausenphone: 05542-504-0

Pharmacy with night service:Rübezahl-ApothekeAm Markt 937213 Witzenhausenphone: 05542-5410

Emergency medical assistance: phone: 05542-6500

Emergency dentist: Dr. EscherHinter den Teichhöfen 12a37213 Witzenhausenphone: 05542-72025

At your service throughout the conference:

There will be registration desks in the entrance areas of bothlocations, Steinstr. 19 and Nordbahnhofstr. 1a.

For special requests, please contact the conference’s headoffice:“Deutscher Tropentag 2002“ Organizing CommitteeSteinstr. 19D - 37213 Witzenhausenphone: 05542-98 1574fax: 05542-98 1313email: [email protected]

Child care is provided. Please contact the registration desks or thehead office.

Conference Fees:

Registration for the conference is still possible on site at any time.Please refer to the respective registration desk.

Rates:Regular Participant: EURO 60,--PhD Candidate: EURO 20,--Student: free of charge

Conference Dinner:

On Thursday, October 10, 2002 a conference dinner will be held inthe university’s refectory (called: “Mensa“), Steinstr. 19,starting at 19.30 h.Please purchase tickets beforehand at the registration desks!

Rate: EURO 20,-- per person

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General Information 19

How to find the different locations:How to find your way around in Witzenhausen:

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