Personal Particulars
Name: Siza Donald Tumbo
Nationality: Tanzanian
Mobile Phone Number: +255-755-32-6752
ACADEMIC BACKGROUND
Primary Education, Nyakabungo P/S, Mwanza City, Mwanza: 1972 – 1972
Primary Education, Buigiri P/S, Chamwino, Dodoma: 1973 – 1978
Ordinary Level Certificate Singe, Arusha: 1980 – 1983
Advanced Level Certificate Kibaha, Pwani: 1984- 1986
B.Sc. Agric. Engineering SUA, Morogoro: 1987 – 1991
Cert. Junior Bankers Course, Morogoro, Tanzania: April – May, 1992
M.Sc. Engineering UDSM, Dar: 1993- 1996
Cert. in Automation of Agricultural Machinery, Obihiro, Japan: Jul – Oct, 1997
Ph.D. Agric. Engineering Pennsylvania State University, USA: 1998 – 2001
Award for Excellent Academic Performance: Best Overall Student in Fourth Years in Agricultural Engineering, Sokoine University of Agriculture, Academic Year 1990. Prize Worth TSh. 450/= donated by Tanzania Motors Services Company (TMSC).
Award for Excellent Academic Performance: Best Overall Student in Fourth Year B.Sc. (Agricultural Engineering) Highest Cumulative GPA, Sokoine University of Agriculture, Academic Year 1990. Prize Worth TSh. 1,000/= donated by INCAR/FIAT.
Award for Excellent Academic Performance: Best Final Year Student in B.Sc. (Agricultural Engineering), Sokoine University of Agriculture, Academic Year 1990. Prize Worth TSh. 1,500/= donated by Minister for Science, Technology and Higher Education.
Honour Society of Agriculture (Gamma Sigma Delta) Penn State University Chapter: November 2, 1999
Employment Record/Professional Engagement
Bank Trainee, Sept 1991- May 1992, National Bank of Commerce
Tutorial Assistant, Information & Electronic Technologies, June 1992- June 1994, SUA
Assistant Lecturer, Information & Electronic Technologies, July 1994- June 1997, SUA
Lecturer, Information & Electronic Technologies, July 1997- June 2002, SUA
Senior Lecturer, Information & Electronic Technologies, July 2002 – To date, SUA
Associate Professor, Information & Electronic Technologies, July 2008 to June 2012.
Professor, Information & Electronic Technologies, July 2012 to date.
Professional Engagement
Post-doctoral Associate, Precision Farming, Sept 2000 – June 2001, University of Florida
Post-doctoral Associate, Water Systems Innovations, Jan 2004 – Dec 2005, SSI Project,
Tanzania
Visiting Scientist, Precision Farming, 1st Jan 2006 – 31st Mar 2006, University of Florida, USA
Leadership Positions
Director, Computer Centre, Sokoine University of Agriculture: July 2006 – June, 2009
Director General, Centre for Agricultural Mechanization and Rural Technologies (CAMARTEC), Ministry of Industry and Trade: March, 2016 – June, 2018
Deputy Permanent Secretary, Ministry of Agriculture: July, 2018 – July, 2022
Regional Administrative Secretary, Shinyanga Region: August, 2022 to date.
Courses
AE 101– Introduction to Agricultural Engineering
AE 102– Introduction to Engineering
AE 211– Strength of Materials
INF 211– Introduction to Computer Simulation and Modelling
AE 214– Introduction to Electronics
AE 301– Farm Power and Mechanization
AE 310– Instrumentation and Measurements
FT 313– Plant and Equipment Layout
AE 316– Introduction to microcomputer systems
AE 328– Computer Networking and Communication
AE 370– Rural Structures and Services I (Structural Analysis and Design)
AE 402– Farm Structures
AE 470– Rural Structures and Services II (Rural Structure Construction)
AE 600– Instrumentation and Measurement in Agricultural Engineering
SUPERVISION
PhD Students Supervision and Co-supervision
Jacob Kaingo. Modelling spatial variability of soil hydraulic properties in an agricultural watershed in Tanzania.
Yustos Yusta. Modelling of solar-wind backed anaerobic digestion system for production of clean energies in rural areas.
Msongaleli, B. Assessment of the impacts of climate variability and change on rainfed sorghum productivity in Central Tanzania.
Mourice, S. K. Estimating Ceres-Maize model cultivar coefficients and soil parameters for simulating spatial maize potential yield in Morogoro and Mvomero Districts.
Singa, D. D. Development of Decision Support System for Bean Crop Irrigation in Drought prone Ukwe Area, Malawi.
Habtamu Admassu (Late). Developing agronomic management options for adaptation to climate variability and change under semi-arid conditions of Ethiopia. Ethiopian. 2008/11.
Ayubu Churi: Development of a decision support system for adaptation to climate change in semi-arid areas of Tanzania for improved crop productivity. Tanzanian. 2008/11.
Mkoga (Late). Title: Decision Aid for Conservation Farming. Nationality: Tanzanian. Joint supervision. 2005/09.
B. Mzirai. Title: Development of a Macro-catchment Rainwater Harvesting Model. Nationality: Tanzanian. Joint supervision. 2003/06.
Cour. Title: Development of Rufiji Basin Decision Aid (RUBDA). Nationality: French. Local supervision, registered at University of East Anglia. 2005/07.
Elin Enfors. Title: Building resilience and intensifying farming: Investigating the potential of small-scale water system innovations in semi-arid agro-ecosystems, Tanzania. Nationality: Dutch. Local supervision. Registered at UNESCO-IHE. 2004/07.
Teaching Compendia
Makungu, P.J., Baanda, S.A., Tumbo, S.D. and B. Kayombo. 1995. Instrumentation: Student Manual and Reference Book. MSc Water and Land Management Programme. Sokoine University of Agriculture, Morogoro, Tanzania, 65 pp.
Makungu, P.J., Tumbo, S.D., Baanda, S.A. and B. Kayombo. 1996. Instrumentation: Student Manual and Reference Book -Revised Edition. MSc Water and Land Management Programme. Sokoine University of Agriculture, Morogoro, Tanzania, 114 pp.
Makungu, P.J. and S.D. Tumbo. 1996. Computer Systems. MSc Water and Land Management Programme. Sokoine University of Agriculture, Morogoro, Tanzania, 72 pp.
Tumbo, S.D. and A. Lukindo. 1996. Structural Design: Rural Structures and Services I. Sokoine University of Agriculture, Morogoro, Tanzania, 70 pp.
Tumbo, S.D. and B.A. Salim. 1996. Rural Electrification: Rural Structures and Services II. Sokoine University of Agriculture, Morogoro, Tanzania, 76 pp.
Precision Farming and Remote Sensing
Investigation and Development of a Mobile System for Rapid Sensing of Chlorophyll Status (proxy indicator for Nitrogen Status) in Corn. January, 1998 – September, 2000. PhD Dissertation Research, Pennsylvania State University, USA.
Advancement of Canopy Sensing and Spatial Yield Mapping Technologies in Citrus Farming. September, 2000 to June, 2001. Use of Sensing and Actuation Technologies such as Laser Sensors, Ultrasonic Sensors and Differential GPS. Citrus Research and Education Centre (CREC), University of Florida. Lake Alfred, Florida, USA.
Evaluation of a variable rate controller for aldicarb application around buffer zones in citrus groves. January, 2006 to March, 2006. Citrus Research and Education Centre (CREC), University of Florida. Lake Alfred, Florida, USA.
Integrated Automation of Specialty Crops: Retrofit of the Orchard Sprayer for use with Autonomous Tractor. Funded by USDA. Working on this research as part of my sabbatical leave from July 2009 to June 2010, University of Florida, USA.
Spurring a Transformation for Agriculture through Remote Sensing (STARS). Duration 2014 – 16. USD 251,447. Funded by Bill and Melinda Gates Foundation. Implemented in East Africa, West Africa, and Bangladesh. SUA working with University of Maryland.
Computer Modelling and Simulation in Agriculture and Water Resources
Smallholder System Innovations: Joint grant proposal development between January and March 2002. Implementation since January 2004 to present. Project title: Development of a GIS-based methodology for adoption of water system innovations. Project partners: Sokoine University of Agriculture, Tanzania; Stockholm University, Sweden; University of Natal, South Africa; International Water Management Institute and Institute of Hydrology and Environment (IHE-UNESCO), Netherlands. (Research and extension) (Jan, 2004 – Dec, 2007).
PARCHED-THIRST (PT) Model: Upgrading and Promotion of PT model. Upgrading involved creating a new user interface, removal of bugs and program modularisation. PT model is agro[1]hydrological model for simulation of rainwater harvesting and crop growth for maize and rice in
semi-arid areas. (Research and extension) (Jan, 2002 – Sept, 2005).
Raising Irrigation Productivity and Releasing Water for Inter-sectoral Needs (RIPARWIN). This is a joint project between University of East Anglia, Sokoine University of Agriculture, and International Water Management Institute. Involved in the development of an irrigation impact model for simulation of dry and wet year scenarios based on net and gross irrigation demands over time. (Apr, 2002 – Mar, 2006).
AgWater Solutions Project. This was a project funded by Bill and Melinda Gates Foundation and spearheaded by IWMI, FAO, SEI, IFPRI, IDE and CH2MHILL. Local partners in Tanzania include Sokoine University of Agriculture, University of Dar-es-Salaam and Ministry of Agriculture, Food Security and Cooperatives. It is a 3-year project (2009-2012).
Water harvesting technologies revisited: Potentials for innovations, improvements, and up-scaling in sub-Saharan Africa (WHaTeR). Funded by EU under FP7. Consortium budget Euro 2,462,000; SUA 159,328. 3 European Organizations, 5 African.
Innovating Strategies to safeguard Food Security using Technology and Knowledge Transfer: A people centred approach (Trans-SEC). 2013-2018. Funded by Federal Ministry of Education and Research (BMBF) and Federal Ministry for Economic Cooperation and Development (BMZ), Germany.
Climate Change
Managing risk, reducing vulnerability, and enhancing agricultural productivity under changing climate. This was a four-year project started April 2007 and funded by DFID through IDRC and being implemented in Tanzania, Kenya, Ethiopia, and Sudan. I was a member of the research team in Tanzania. 2007/2011.
Impact assessment and livelihood vulnerability and macro-economic modeling studies. This project was funded under the CCIAM (Climate Change Impacts, Adaptation and Mitigation) programme. This is a 3-year project (November 2010 to October 2013).
Enhancing Climate Change Adaptation in Agriculture and Water resources (ECAW) in the Great Horn of Africa. The project is implemented by four institutions; Sokoine University of Agriculture (Tanzania), Agricultural Research Corporation (Sudan), Ethiopia Institute of Agricultural Research (Ethiopia) and Kenya Agricultural Research Institute (Kenya) and is funded by IDRC[1]Canada. Project duration is 3 years (October 2011 to September 2014).
Assessing the impacts of climate variability and change on agricultural systems in Eastern Africa while enhancing the region’s capacity to undertake integrated assessment of vulnerabilities to future changes in climate as an activity under “The Agricultural Modelling Intercomparison and Improvement Project (AgMIP) in Sub-Saharan Africa and South Asia”. This is a two-year project (April 2012- March 2014).
Adapting East African smallholder systems to climate change and variability through a stakeholder driven, multi-modelling integrated assessment approach (AgMIP-2). 2015 – 2017. Source of funds: Columbia University and NASA/GISS, in partnership with DFID.
Information and Communication Technologies
The Role of Mobile Phones towards Improving Coverage of Agricultural Extension Services: A Case Study of Banana and Maize Value Chains. This project is funded under the EPINAV (Enhancing Pro-poor Innovation in Natural Resources and Agricultural Value Chains) programme at Sokoine University of Agriculture. Project duration is 4 years (2011 – 2014).
January 1996 – June 1997: Involved in the promotion of animal traction in Gairo Ward, in Kilosa District, Morogoro, Tanzania. We trained farmers on the use of ox-drawn weeders. This promotion and training led to the adoption and use of ox-drawn weeders in Msingisi and surrounding villages.
Appropriate Technologies in Rural Areas: This extension activity involved with promotion of oil press machines for production of sunflower oil from sunflower seeds in the Morogoro Rural District from 1992 to 1994. Jun., 1992 – Sept., 1993: Involved in extension and promotion of oil-press machines for production of sunflower seeds in the Morogoro Rural District, Tanzania.
Animal Traction The promotion of animal traction was carried out from 1992 to 1996 mainly in Gairo Ward. Farmers were trained to use animal drawn weeders. This promotion and training, lead to adoption and use of animal drawn weeders in Msingisi and surrounding villages in Gairo Ward.
September 2012 – November 2014: Task force member in the development of Agriculture Climate Resilience Action Plan for the Ministry of Agriculture, Food Security and Cooperatives under the Enhancing Climate Change in Agriculture and Water Resources in the Great Horn of Africa (ECAW) Research Project. Technical and financial support to the Environment Management Unit.
2011 – 2015: Technical and financial support for upgrading spate and ndiva irrigation canals in Makanya and Bangalala villages in Same District under the project Water Harvesting Technologies Revisited: Potentials for Innovations, Improvements and Upscaling in Sub[1]Saharan Africa (WHaTeR). The aim was to minimize canals leakage and seepage losses.
Rapid Appraisal of Policies and Institutional Frameworks for Agricultural Water Management in Tanzania. IMAWESA. May – September, 2006.
Resource Person – Training on the Development of Decision Support Tools in Soil, Nutrient and Water Management. Nairobi. ASARECA. May 2007. Resource Person – Short courses on Soil-Plant-Water Relationships for Efficient Water Use for Professional Skills Improvement in Land and Water Management. SADC Land & Water Management Applied Research and Training Programme. April/May 2008.
Economics of Climate Change for Agriculture Sector in Tanzania Adaptation Options and their Costs. SEI/DFID. December, 2010. http://economics-of-cc[1]intanzania.org/reportsandpublications.html.
Investments in Agricultural Water Management with greatest potential to improve incomes and food security. International Water Management Institute, Accra, Ghana. December, 2010 to March, 2011.
Costing and planning of agriculture’s adaptation to climate change. International Institute for Environment and Development. Jan – April, 2011.
Climate change and agriculture action plan cost estimates and targeting strategy. World Bank, Tanzania. November 2013 – February 2014.
Assessment of Tanzania’s Agricultural Production, Climate Change, Agricultural Trade and Food Security. Kenya Institute for Public Policy Research and Analysis (KIPPRA), Kenya. August to December, 2014.
Cost-Benefit Analysis (CBA) on Water Use Efficiency and Water Storage Technologies in Tanzania. Ministry of Agriculture, Food Security and Cooperatives (MAFC), Tanzania. December 2014 to March, 2015.
Innovation Laboratory for Small Scale Irrigation (ILSSI): Tanzania. Client – International Water Management Institute. 2014-2018.
Advancement, Manufacturing, Testing and Marketing of three (3) CFT’s (CAMARTEC Farm Tractor). After joining CAMARTEC in 2016, it was discovered that the production of CFT tractors had halted several years prior, leading to the sale of only one tractor. Consequently, in 2016, the manufacturing of tractors was resumed, resulting in the successful production and sale of three additional tractors.
Involved in the Design, Development, Improvement and Deployment of 150 Draught Powered Cotton Seed Planters to Cotton Farmers, Meatu in Simiyu Region for BIORE Tanzania Ltd. The challenge addressed was mainly the design of the seed metering system.
Involved in the initial Design and Development of a Planter for CAMARTEC Farm Tractor (CFT). The challenge addressed was mainly the design of the seed metering system.
Lead the Construction of Institutional Biogas Plants, some constructed plants include those at Karanga Prison in Moshi District, Visitation Secondary School, Siha District, Emboreti Secondary School, Simanjiro District, and Personal Instutional Biogas Chato District.
Lead the Tanzania Domestic Biogas Programme (TDBP) in the Construction of more than 500 Domestic Biogas Plants through the Support of the Africa Biogas Partnership Programme (ABPP).
Lead the Testing of three URSUS tractor models, 5314-4WD, 5312-2WD and 3512-2WD, at Mkalama District in Singida Region and Bassotu in Hanang District, Manyara Region.
Managed the Design and Manufacturing of a Biogas Burner for the Construction of Small and Large Biogas Plants for Domestic and Community Use.
Lead the Preparation and Development of Test Regulations for Agricultural Machinery and Tools in the Country in Collaboration with Various Stakeholders.
Lead the Initial Adaptation, Design, Manufacturing and Testing of Bean Thresher. There are huge demands of bean threshers in Arusha and Manyara. For example, in Simanjiro Districts farmers have farm sizes as huge as 1000 acres to 2000 acres.
Involved in the Initial Adaptation, Design, Manufacturing and Testing of a Sorghum Thresher. There are huge demands of bean threshers in Manyara especially for farmers contracted to supply sorghum to Breweries factories in the Country.
Lead the Adoption and Advancement of Mobile-Kilimo (M-Kilimo) a platform that enable farmers to access extension services and agriculture market information through their mobile phones. The system has been launched in 2020 and by 2022 it had a total of 7,000 extension officers and 5 million farmers registered and using the system.
Lead the Development of the Agricultural Information Dashboard that provides timely, actionable, and science-driven agricultural information and statistics in a visual and easy to analyse format. The system can manage data originating from a variety of national and external sources. Regardless of the origin and structure of the data, the system can display the data through a dashboard that generate charts, tables and maps that display relevant agricultural information.
Lead the Design and Development of Crop Stock Dynamics, the system that tracks the quantity and movement of agricultural produce in the country. The system monitors agriculture stock as it moves from farmers, to warehouses, markets up to final consumers or processors, from one council to another council.
Lead the Design and Implementation of the Kilimo Call Centre. The Call Centre is based on the TTCL and its partner core digital system. The Centre has eight service stations, which means eight calls concurrently from farmers.
Launched the Initial Process of Integrating M-Kilimo with Other MoA Digital Information Systems (Farmer Registration System, Crop Stock Dynamics, Pest Stock Management System, Seed Dealers Management System, Agricultural Routine Data System, Agricultural Trade Management Information System, Stakeholder Database).
Computers and Electronics in Agriculture Year
UAV-based multispectral vegetation indices for assessing the interactive effects of water and nitrogen in irrigated horticultural crops production under tropical sub[1]humid conditions: A case of African eggplant
Paul Reuben Mwinuka, Sixbert K. Mourice, Winfred B.Mbungu, Boniphace P. Mbilinyi, Siza D. Tumbo, Petra Schmitter
Agricultural Water Management 266, 107516 [2022]
Parameterization of a Semidistributed Hydrological Model by Using a Combination of Ground and Satellite-Derived Data during the Calibration Process: A Case Study in the Wami River Basin
F Jarrin, P Guillevic, J Jeong, W Mbungu, S Tumbo, C Nakalambe, Yihun Taddele Dile
100th American Meteorological Society Annual Meeting [2020]
Earth Observations and Land Surface Models to Support Agricultural Water Resources Management (Centennial)
Pierre Guillevic, Jean-Claude Roger, I Becker-Reshef, A Coffin, Andrew French, Jerry Hatfield, M Humber, Jaehak Jeong, Fernando Jarrin, Chris Justice, Winfred Mbungu, C Nakalembe, Charles Sanchez, Siza Tumbo, Eric Vermote, Augustin Vintzileos, Michelle Cryder
100th American Meteorological Society Annual Meeting [2020]
Farmers’ access and use of mobile phones for improving the coverage of agricultural extension service: A case of Kilosa district, Tanzania
BS Kiberiti, CA Sanga, M Mussa, SD Tumbo, MRS Mlozi, R Haug
Environmental and Agricultural Informatics: Concepts, Methodologies, Tools, and Applications [2020]
Integrated assessment of climate change impacts and adaptation in agriculture: the case study of the Wami river sub-basin, Tanzania,
Siza D Tumbo, Khamaldin D Mutabazi, Sixbert K Mourice, Barnabas M Msongaleli, Frank J Wambura, Omari B Mzirai, Ibrahim L Kadigi, Frederick C Kahimba, Peter Mlonganile, Hashim K Ngongolo, Chuki Sangalugembe, Karuturi PC Rao, Roberto O Valdivia
Climate Variability and Change in Africa, 115-136 [2020]
Earth observations and models to support agricultural water resources management
Pierre C Guillevic, Jean-Claude Roger, Inbal Becker-Reshef, Maria Beget, Alisa Coffin, Michelle Cryder, Carlos Marcelo Di Bella, Belen Franch, Andrew N French, Pierre-Louis Frison, Matthew Hansen, Jerry Hatfield, Michael Laurence Humber, Roberto C Izaurralde, Jaehak Jeong, Fernando Jarrín, Christopher Owen Justice, Winfred Mbungu, Catherine Nakalembe, Charles Anthony Sanchez, Siza Tumbo, Eric Vermote, Augustin Vintzileos
AGU Fall Meeting Abstracts 2019, H31F-06 [2019]
Modelling rainfed pearl millet yield sensitivity to abiotic stresses in semi-arid central Tanzania, Eastern Africa
Festo Richard Silungwe, Frieder Graef, Sonoko Dorothea Bellingrath-Kimura, Emmanuel A Chilagane, Siza Donald Tumbo, Fredrick Cassian Kahimba, Marcos Alberto Lana
Sustainability 11 (16), 4330 [2019]
Unmanned aerial vehicle-based remote sensing in monitoring smallholder, heterogeneous crop fields in Tanzania
IB Yonah, SK Mourice, SD Tumbo, BP Mbilinyi, J Dempewolf
International Journal of Remote Sensing 39 (15-16), 5453-5471 [2018]
Eco-hydrological modeling using field-based and Earth Observations to assess water use efficiency and support agricultural water resources management
Jean-Claude Roger, Pierre C Guillevic, Inbal Becker-Reshef, Varaprasad Bandaru, Alisa Coffin, Andrew N French, Jerry Hatfield, Michael Laurence Humber, Sergii Skakun, Belen Franch, Matthew Hansen, Brian F Thomas, Eric Vermote, Christopher Owen Justice, Roberto C Izaurralde, Jan Dempewolf, Catherine Nakalembe, Christelle Cryder, Charles Anthony Sanchez, Jaehak Jeong, Carlos Marcelo Di Bella, Maria Beget, Siza Tumbo, Bruno Meyer, Clement Adjorlolo, Pierre-Louis Frison
AGU Fall Meeting Abstracts 2018, H43G-2538 [2018]
Crop upgrading strategies and modelling for rainfed cereals in a semi-arid climate—A review
FR Silungwe, F Graef, SD Bellingrath-Kimura, SD Tumbo, FC Kahimba, …
Water 10 (4), 356 [2018]
Exploring information seeking behavior of farmers in information related to climate change adaptation through ICT (CHAI)
SD Tumbo, N Mwalukasa, KG Fue, MRS Mlozi, R Haug, C Sanga
International Review of Research in Open and Distributed Learning 19 (3) [2018]
Prediction of soil moisture-holding capacity with support vector machines in dry subhumid tropics
J Kaingo, SD Tumbo, NI Kihupi, BP Mbilinyi
Applied and Environmental Soil Science 2018 [2018]
ECAWsoft: A web based climate and weather data visualization for big data analysis
KG Fue, CA Sanga, SD Tumbo
Global Journal of Computer Science and Technology [2017]
Electronic Field Data Collection in Support of Satellite-Based Food Security Monitoring in Tanzania
Catherine Lilian Nakalembe, Jan Dempewolf, Christina Jade Justice, Inbal Becker[1]Reshef, Siza Tumbo, Sixbert Maurice, Boniface Mbilinyi, Kadigi Ibrahim, Stanslaus Materu
AGU Fall Meeting Abstracts 2016, PA11B-1960 [2016]
Crowdsourcing platform ‘Ushaurikilimo’ enabling questions answering between farmers, extension agents and researchers
CA Sanga, J Phillipo, MR Mlozi, R Haug, SD Tumbo
International Journal of Instructional Technology and Distance Learning 10 … [2016]
Unlocking the potential of the mobile phones by university undergraduate students: A case of Sokoine University of Agriculture.
MRS Mlozi, M Mussa, KM Mapunda, VJ Kalungwizi, WJ Mwakapina, …
International Journal of Computing & ICT Research 10 (1) [2016]
Web and Mobile Phone Based Rabies Surveillance System for Humans and Animals in Kilosa District, Tanzania
MJ Kipanyula, AM Geofrey, KG Fue, MRS Mlozi, SD Tumbo, R Haug, …
International Journal of Information Communication Technologies and Human … [2016]
Mobile learning bridging the gap in agricultural extension service delivery: Experiences from Sokoine University of Agriculture, Tanzania
C Sanga, M Mlozi, R Haug, S Tumbo
International Journal of Education and Development using ICT 12 (3) [2016]
Farmers’ Access and Use of Mobile Phones for Improving the Coverage of Agricultural Extension Service: A Case of Kilosa District, Tanzania
C Sanga, PMRS Mlozi, S Tumbo, R Haug
IGI Global [2016]
Farmers’ access and use of mobile phones for improving the coverage of agricultural extension service: A case of Kilosa District, Tanzania
BS Kiberiti, CA Sanga, M Mussa, SD Tumbo, MRS Mlozi, R Haug
International Journal of ICT Research in Africa and the Middle East … [2016]
Experimenting open agricultural extension service in Tanzania: A case of Kilosa Open Data Initiative (KODI)
CA Sanga, JP Masamaki, KG Fue, MR Mlozi, SD Tumbo
Journal of Scientific and Engineering Research [2016]
Analyzing usage of crowdsourcing platform ‘Ushaurikilimo’ by pastoral and agro[1]pastoral communities in Tanzania
K Fue, A Geoffrey, MRS Mlozi, S Tumbo, R Haug, C Sanga
International Journal of Instructional Technology and Distance Learning [2016]
Land cover transition in northern Tanzania
I Ouedraogo, J Barron, SD Tumbo, FC Kahimba
Land Degradation & Development 27 (3), 682-692 [2016]
Uncertainty of runoff projections under changing climate in Wami River sub-basin
FJ Wambura, PM Ndomba, V Kongo, SD Tumbo
Journal of Hydrology: Regional Studies 4, 333-348 [2015]
AgriSense-STARS: Advancing Methods of Agricultural Monitoring for Food Security in Smallholder Regions-the Case for Tanzania
J Dempewolf, I Becker-Reshef, CL Nakalembe, S Tumbo, S Maurice, …
AGU Fall Meeting Abstracts 2015, B44A-01 [2015]
Multi-temporal UAV based data for mapping crop type and structure in smallholder dominated Tanzanian agricultural landscape
JR Nagol, C Chung, J Dempewolf, S Maurice, W Mbungu, S Tumbo
AGU Fall Meeting Abstracts 2015, B41D-0470 [2015]
Characterization of Sounds in Maize Produced by Internally Feeding Insects: Investigations to Develop Inexpensive Devices for Detection of Prostephanus truncatus (Coleoptera: Bostrichidae) and Sitophilus zeamais (Coleoptera: Curculionidae) in Small-Scale Storage Facilities in Sub-Saharan Africa
DO Kiobia, Siza D Tumbo, Juliana Cantillo, BB Rohde, PK Mallikarjunan, RW Mankin
Florida Entomologist 98 (2), 405-409 [2015]
Development, Calibration and Validation of a Macro-Catchment Rain Water
Harvesting Model: Overcoming Limited Hydrological Data in Semi-Arid Areas of Tanzania
OB Mzirai, SD Tumbo
Journal of Global Ecology and Environment, 56-68 [2015]
Modeling potential rain-fed maize productivity and yield gaps in the Wami River
sub-basin, Tanzania
SK Mourice, SD Tumbo, A Nyambilila, CL Rweyemamu
Acta Agriculturae Scandinavica, Section B—Soil & Plant Science 65 (2), 132-140 [2015]
Using climate and crop simulation models for assessing climate change impacts on agronomic practices and productivity
WB Mbungu, HF Mahoo, SD Tumbo, FC Kahimba, FB Rwehumbiza, …
Sustainable intensification to advance food security and enhance climate resilience in Africa [2015]
Experts’ assignment algorithm for Cloud-based Agro-advisory Service Information System (CASIS) using weighted sum model: piloting CASIS
KG Fue, S Tumbo, C Sanga
UbuntuNet Alliance [2015]
A solar-powered, Wi-Fi re-programmable precision irrigation controller
K Fue, J Schueller, A Schumann, S Tumbo
Proceedings of the 2nd Pan African International Conference on Science … [2014]
On the Development of the Mobile based Agricultural Extension System in Tanzania: A Technological Perspective.
C Sanga, M Mussa, S Tumbo, MRS Mlozi, L Muhiche, R Haug
International Journal of Computing & ICT Research 8 (1) [2014]
System design and ICT adoption in agricultural extension services delivery in Tanzania
CA Sanga, SD Tumbo, MRS Mlozi
Technology development and platform enhancements for successful global e[1]government design [2014]
Maize cultivar specific parameters for decision support system for agrotechnology transfer (DSSAT) application in Tanzania
SK Mourice, CL Rweyemamu, SD Tumbo, N Amuri
Scientific Research Publishing [2014]
Accuracy of Giovanni and Marksim software packages for generating daily rainfall data in selected bimodal climatic areas in Tanzania
FC Kahimba, SD Tumbo, E Mpeta, IB Yonah, W Timiza, W Mbungu
Tanzania Journal of Agricultural Sciences 13 (1) [2014]
A decision support system for enhancing crop productivity of smallholder farmers in semi-arid agriculture
AJ Churi, MRS Mlozi, H Mahoo, SD Tumbo, R Casmir
International Journal of Information 3 (8) [2013]
On Search for Strategies to Increase the Coverage of Agricultural Extension Service: Web-based Farmers’ Advisory Information System.
Camilius Sanga, MRS Mlozi, S Tumbo, M Mussa, MCR Sheto, GH Mwamkinga, R Haug
International Journal of Computing & ICT Research 7 (1) [2013]
Application of self-organizing maps technique in downscaling GCMs climate change projections for Same, Tanzania
SD Tumbo, E Mpeta, M Tadross, FC Kahimba, BP Mbillinyi, HF Mahoo
Physics and Chemistry of the Earth, Parts A/B/C 35 (13-14), 608-617 [2010]
Evaluation of a variable rate controller for aldicarb application around buffer zones in citrus groves
SD Tumbo, M Salyani, WM Miller, R Sweeb, S Buchanon.
Computers and electronics in agriculture 56 (2), 147-160 [2007]
GIS-based decision support system for identifying potential sites for rainwater harvesting
BP Mbilinyi, SD Tumbo, HF Mahoo, FO Mkiramwinyi
Physics and Chemistry of the Earth, Parts A/B/C 32 (15-18), 1074-1081 [2007]
Status, Opportunities, Potential and Challenges of Technology-Mediated Open and Distance Education (Tech-MODE) for Agricultural Education and Improved Livelihoods: A Case Study of Tanzania
C Sanga, A Churi, S Tumbo
Country Case Studies 113 [2007]
Use of a hydrological model for environmental management of the Usangu Wetlands
JJ Kashaigili, MP McCartney, HF Mahoo, BA Lankford, BP Mbilinyi, DK Yawson, SD Tumbo
International Water Management Institute, Tanzania. Colombo, Sri Lanka, 48 [2006]
Modeling the hydrology of the Usangu Plains Wetlands for environmental management
J Kashaigili, M McCartney, H Mahoo, BA Lankford, BP Mbilinyi, SD Tumbo, DK Yawson
IWMI Research Report 104. Water Management [2006]
Maize yield simulation under rain-fed and rainwater harvesting systems using Parched-Thirst model
Siza D Tumbo, Thadeo Mpulila, Omari B Mzirai, Henry F Mahoo, Filbert B
Rwehumbiza, JMR Semoka, Nuhu Hatibu
International Water Management Institute Conference Papers.
Evaluation of simulator of missing weather data (SMWD) required in simulation of agro hydrological modeling n the catchment and basin level: case of the PARCHED[1]THIRST and …
OB Mzirai, SD Tumbo, T Bwana, N Hatibu, FB Rwehumbiza, JW Gowing
International Water Management Institute Conference Papers [2005]
Evaluation of Simulators of Synthetic Missing Climate Data Required for Agro[1]hydrological Modelling and Water Management Planning: The case of the PARCHED-THIRST and Marksim Models
OB Mzirai, SD Tumbo, T Bwana, N Hatibu, FB Rwehumbiza, JW Gowing
International Water Management Institute [2005]
A decision-aid for the management of water resources in the Ruaha River Basin, Tanzania
JG Cour, RM Kadigi, BA Lankford, D Yawson, S Tumbo
International Water Management Institute Conference Papers [2005]
Comparison between ultrasonic and manual measurements of citrus tree canopies
JD Whitney, SD Tumbo, WM Miller, TA Wheaton
Proceedings of the ASAE Annual International Meeting, St. Joseph, MI, USA 2831 [2002]
Development and testing of a citrus yield monitor
SD Tumbo, JD Whitney, WM Miller, TA Wheaton
Applied Engineering in Agriculture 18 (4), 399 [2002]
Investigation of laser and ultrasonic ranging sensors for measurements of citrus canopy volume
SD Tumbo, M Salyani, JD Whitney, TA Wheaton, WM Miller
Applied Engineering in Agriculture 18 (3), 367 [2002]
On–the–go sensing of chlorophyll status in corn
SD Tumbo, DG Wagner, PH Heinemann
Transactions of the ASAE 45 (4), 1207 [2002]
Hyperspectral characteristics of corn plants under different chlorophyll levels
SD Tumbo, DG Wagner, PH Heinemann
Transactions of the ASAE 45 (3), 815 [2002]
Hyperspectral–based neural network for predicting chlorophyll status in corn
SD Tumbo, DG Wagner, PH Heinemann
Transactions of the ASAE 45 (3), 825 [2002]
Laser, ultrasonic and manual measurements of canopy volumes of citrus trees
SD Tumbo, MS JD
American Society of Agricultural Engineers [2001]
Investigation of the use of fiber-optic spectrometer and artificial neural networks for on-the-go sensing of chlorophyll status in corn
SD Tumbo
The Pennsylvania State University [2001]
Hyperspectral compression-decompression using artificial neural networks
DG Wagner, SD Tumbo
Biological Quality and Precision Agriculture II 4203, 1-12 [2000]
Climate Variability and Change
The management strategies of pearl millet farmers to cope with seasonal rainfall variability in a semi-arid agroclimate
Festo Richard Silungwe, Frieder Graef, Sonoko Dorothea Bellingrath-Kimura, Siza
Donald Tumbo, Frederick Cassian Kahimba, Marcos Alberto Lana
Agronomy 9 (7), 400 [2019]
Analysis of intra and interseasonal rainfall variability and its effects on pearl millet yield in a semiarid agroclimate: Significance of scattered fields and tied ridges
Festo Richard Silungwe, Frieder Graef, Sonoko Dorothea Bellingrath-Kimura, Siza
Donald Tumbo, Frederick Cassian Kahimba, Marcos Alberto Lana
Water 11 (3), 578 [2019]
Performance of Sorghum Varieties under Variable Rainfall in Central Tanzania
FB Rwehumbiza, SD Tumbo, BM Msongaleli, NI Kihupi
Hindawi International Scholarly Research Notices [2017]
An Assessment of Tanzania’s Agricultural Production, Climate Change, Agricultural Trade and Food Security
SD Tumbo, HF Mahoo, KD Mutabazi, FC Kahimba, IL Kadigi, T Mnimbo
Kenya Institute for Public Policy Research and Analysis [2017]
Quantification of climate change and variability impacts on maize production at farm level in the Wami River Sub-Basin, Tanzania
SK Mourice, W Mbungu, SD Tumbo
Quantification of climate variability, adaptation and mitigation for … [2017]
Performance of sorghum varieties under variable rainfall in central Tanzania
BM Msongaleli, SD Tumbo, NI Kihupi, FB Rwehumbiza
International scholarly research notices [2017]
Assessment of Climate Change Impact on Common Bean (Phaseolus Vulgaris Savi, L.) Production in Tanzania
SK Mourice, SD Tumbo, CL Rweyemamu
Climate Change and Multi-Dimensional Sustainability in African Agriculture [2016]
A gendered analysis of perception and vulnerability to climate change among smallholder farmers: the case of Same District, Tanzania
TS Mnimbo, J Mbwambo, FC Kahimba, SD Tumbo
Climate and Development 8 (1), 95-104 [2016]
Impacts of climate variability and change on rainfed sorghum and maize: Implications for food security policy in Tanzania
BM Msongaleli, F Rwehumbiza, SD Tumbo, N Kihupi
Canadian Center of Science and Education [2015]
Assessing the impacts of climate variability and change on agricultural systems in Eastern Africa while enhancing the region’s capacity to undertake integrated assessment of vulnerabilities to future changes in climate – Tanzania
S Tumbo, O Mzirai, S Mourice, B Msongaleli, F Wambura, I Kadigi, C. Sanga, F.
Kahimba, H. Ngongolo, C. Sangalugembe, K. Mutabazi, N. Sumari
Research gate [2015]
Sorghum yield response to changing climatic conditions in semi-arid central Tanzania: evaluating crop simulation model applicability
B Msongaleli, F Rwehumbiza, SD Tumbo, NI Kihupi
Scientific Research Publishing [2014]
Enhancing response farming for strategic and tactical management of risks of seasonal rainfall variability
H Admassu, HF Mahoo, FBR Rwehumbiza, SD Tumbo, H Mogaka
African Crop Science Journal 22, 941-950 [2014]
Skill and usefulness of regional seasonal forecasts for adoption to climate change for agricultural production in Tanzania
SD Tumbo, MJ Mwano, E Mpeta, NI Kihupi
The Geographical Association of Tanzania, University of Dar es Salaam [2014]
Impact of projected climate change on agricultural production in semi-arid areas of Tanzania: a case of same district
SD Tumbo, FC Kahimba, BP Mbilinyi, FB Rwehumbiza, HF Mahoo, WB Mbungu, E Enfors
African Crop Science Journal 20, 453-463 [2012]
Understanding farmers information communication strategies for managing climate risks in rural semi-arid areas, Tanzania
AJ Churi, MRS Mlozi, SD Tumbo, R Casmir
International Journal of Information and Communication Technology Research [2012]
Costing and planning of adaptation to climate change in animal agriculture in Tanzania
S Tumbo, K Mutabazi, A Kimambo, F Rwehumbiza
International Institute for Environment and Development (IIED), London, UK … [2011]
Economics of climate change for agriculture sector in Tanzania: adaptation options and their costs
SD Tumbo, BP Mbilinyi, FB Rwehumbiza, KD Mutabazi
Soil Water Management Group, Sokoine University of Agriculture, Tanzania [2010]
Agronomic management strategies for adaptation to the current climate variability: the case of North-Eastern Tanzania
Siza D. Tumbo, Filbert B. Rwehumbiza, Frederick C. Kahimba, Elin Enfors, Henry F. Mahoo, Boniface P. Mbilinyi, Zacharia Mkoga, and Ayubu Churi
2nd Final International Conference on Climate, Sustainability, and Development in Semi-Arid Regions, Brazil [2010]
Adequacy of the current agronomic management strategies to cope with climate change: the case of Same district in Tanzania
Tumbo, S.D.; Kahimba, F.C.; Mbilinyi, B.P.; Rwehumbiza, F.B.R.; Mahoo, H.F.; Mbungu, W.
11th WaterNet/WAFSA/GWP-SA Symposium 2010 IWRM for National and Regional
Integration: Where Science, Policy and Practice Meet, 27-29 October 2010, Victoria
Falls, Zimbabwe [2010]
Soil-Water Management for Food Security
Adoption and Outscaling of Conservation Agriculture in Tanzania
SD Tumbo, KD Mutabazi, FC Kahimba, WB Mbungu
Gates Open Res 3 (699), 699 2019
Trans-SEC’s food security research in Tanzania: from constraints to adoption for out-and upscaling of agricultural innovations
Stefan Sieber, Frieder Graef, TS Amjath-Babu, Khamaldin Daud Mutabazi, Siza D Tumbo, Anja Faße, Sergio Gomez y Paloma, Constance Rybak, Marcos Alberto Lana, Hycenth Tim Ndah, Götz Uckert, Johannes Schuler, Ulrike Grote
Food Security 10 (4), 775-783 [2018]
Water use and rice productivity for irrigation management alternatives in Tanzania
ST Materu, S Shukla, RP Sishodia, A Tarimo, SD Tumbo
Water 10 (8), 1018 [2018]
Influence of gender on roles, choices of crop types and value chain upgrading strategies in semi-arid and sub-humid Tanzania
TS Mnimbo, J Lyimo-Macha, JK Urassa, HF Mahoo, SD Tumbo, F Graef
Food Security 9 (6), 1173-1187 [2017]
Trans-SEC’s food security research in Tanzania: Principles, research models and assumptions
Stefan Sieber, Frieder Graef, TS Amjath-Babu, Khamaldin D Mutabazi, Siza D
Tumbo, Anja Faße, Gomez Y Paloma, Constance Rybak, Marcos Lana, Tim Hycenth
Ndah, Götz Uckert, Johannes Schuler, Ulrike Grote
Food Security 9 (6), 1147-1155 [2017]
Food security research in Tanzania.
KD Mutabazi, SD Tumbo, A Fasse, S Gomez y Paloma, C Rybak, M Lana, …
Food Security 9 (6), 1143-1321 [2017]
A Modernized System for Agricultural Monitoring for Food Security in Tanzania
Jan Dempewolf, Catherine Lilian Nakalembe, Inbal Becker-Reshef, Christina Jade
Justice, Siza Tumbo, Boniface Mbilinyi, Sixbert Maurice, Marystella Mtalo
AGU Fall Meeting Abstracts 2016, GC53A-1270 [2016]
Effects of catchment characteristics and climatic conditions on reservoir water capacity in a drought prone area
DS Darwin, DT Siza, HF Mahoo, F Rwehumbiza, M Lowole
African Journal of Agricultural Research 11 (6), 472-479 [2016]
Trans-SEC-Estratégias inovadoras para salvaguardar a segurança alimentar na Tanzânia utilizando troca de tecnologias e conhecimento: uma abordagem centrada em pessoas
MA Lana, M Bonatti, S Sieber, S Tumbo
V Congreso Latinoamericano de Agroecología-SOCLA (La Plata, 2015)
Farmer’s perception on soil fertility status and soil fertility management in semi[1]arid areas of Central Tanzania
E Swai, K Mutabazi, S Tumbo, N Urassa, L Mwinuka, D Mchau, F Graef, L Herrmann
Tropentag Conference [2015]
Factors influencing intensity of adoption of integrated water management innovations in the semi-arid areas of north-eastern, Tanzania
K Masuki, K Mutabazi, A Mattee, S Tumbo, F Rwehumbiza, J Mowo [2014]
Framework for participatory food security research in rural food value chains
F Graef, S Sieber, K Mutabazi, F Asch, HK Biesalski, J Bitegeko, W Bokelmann, M
Bruentrup, O Dietrich, N Elly, A Fasse, JU Germer, U Grote, L Herrmann, R
Herrmann, H Hoffmann, FC Kahimba, B Kaufmann, K-C Kersebaum, C Kilembe, A
Kimaro, J Kinabo, B König, H König, M Lana, C Levy, J Lyimo-Macha, B Makoko, G
Mazoko, SH Mbaga, W Mbogoro, H Milling, K Mtambo, J Mueller, C Mueller, K
Mueller, E Nkonja, C Reif, Claudia Ringler, S Ruvuga, M Schaefer, A Sikira, V
Silayo, K Stahr, E Swai, S Tumbo, G Uckert
Global Food Security 3 (1), 8-15 [2014]
Sampling scheme for mapping variability of soil hydraulic properties in an agricultural area in Tanzania.
J Kaingo, DJ Brus, SD Tumbo, BP Mbilinyi
RUFORUM Fourth Biennial Conference, Maputo, Mozambique, 19-25 July 2014, 483-484 [2014]
Adoption and scaling-up of conservation agriculture in Tanzania: Case of Arusha and Dodoma regions
FC Kahimba, KD Mutabazi, SD Tumbo, KF Masuki, WB Mbungu
Scientific Research [2014]
Narrowing maize yield gaps under rain-fed conditions in Tanzania: effect of small nitrogen dose
SK Mourice, CI Rweyemamu, AA Nyambilila, SD Tumbo
Tanzania Journal of Agricultural Sciences 12 (2) [2014]
Determinants of intensity of adoption of water systems innovations in Makanya Watershed, North-eastern, Tanzania
KFG Masuki, KD Mutabazi, AZ Mattee, SD Tumbo, FB Rwehumbiza
International Journal of Environmental Engineering and Natural Resources [2014]
Social capital and diffusion of water system innovations in the Makanya watershed, Tanzania
SD Tumbo, KD Mutabazi, KFG Masuki, FB Rwehumbiza, HF Mahoo, SJ Nindi, JG
Mowo
The Journal of Socio-Economics 43, 24-36 [2013]
Identification of suitable indices for identification of potential sites for rainwater harvesting
SD Tumbo, BP Mbilinyi, HF Mahoo, FO Mkilamwinyi
Tanzania Journal of Agricultural Sciences 12 (2) [2013]
Adoption and up scaling of water harvesting technologies in Tanzania. Chapter 6
HF Mahoo, FC Kahimba, KD Mutabazi, SD Tumbo, FB Rwehumbiza, P Reuben, BP
Mbilinyi, JW Gowing
Water harvesting technologies in SSA: state of the art. Routledge: Earthscan [2012]
Adoption and up scaling of water harvesting technologies in Tanzania
HF Mahoo, FC Kahimba, KD Mutabazi, SD Tumbo, FB Rwehumbisa, P Reuben
Water Harvesting Technologies in sub-Saharan Africa [2012]
Bright spots and barriers to adoption
Henry Mahoo, Frederick Kahimba, Khamaldin Mutabazi, Siza Tumbo, Filbert Rwehumbiza, Paul Reuben, Boniface Mbilinyi and John Gowing
Water Harvesting in Sub-Saharan Africa, 118 [2012]
An empirical framework for scaling-out of water system innovations: Lessons from diffusion of water system innovations in the Makanya catchment in Northern Tanzania
SD Tumbo, KD Mutabazi, MM Byakugila, HFM Mahoo
Agricultural Water Management 98 (11), 1761-1773 [2011]
Yield and soil system changes from conservation tillage in dryland farming: A case study from North Eastern Tanzania
E Enfors, J Barron, H Makurira, J Rockström, S Tumbo
Agricultural Water Management 98 (11), 1687-1695 [2011]
Extrapolating effects of conservation tillage on yield, soil moisture and dry spell mitigation using simulation modelling
ZJ Mkoga, SD Tumbo, N Kihupi, J Semoka
Physics and Chemistry of the Earth, Parts A/B/C 35 (13-14), 686-698 [2010]
Sustainability of rainwater harvesting systems in rural catchment of Sub-Saharan Africa
JS Pachpute, SD Tumbo, H Sally, ML Mul
Water Resources Management 23 (13), 2815-2839 [2009]
Identification of Potential Sites for Rainwater Harvesting Using Remote Sensing and GIS in the Makanya River Catchment, Same District, Northern Tanzania
FO Mkiramwinyi, BP Mbilinyi, PTK Munishi, SD Tumbo, MCS Lalika
Asian Journal of African Studies, 169-184 [2009]
Rainwater Harvesting in the Management of Agro-eco Systems
FB Rwehumbiza, SD Siza Tumbo
Rainwater harvesting: a lifeline for human well-being, 23 [2009]
Water competition, variability and river basin governance: A critical analysis of the Great Ruaha River, Tanzania
BA Lankford, S Tumbo, K Rajabu
River basin trajectories: Societies, environments and development 8, 171 [2009]
Factors that influence the diffusion of terraces in Makanya watershed
MM Byakugila, SD Tumbo, HF Mahoo, FB Rwehumbiza
Journal of Continuing Education and Extension 3 (1), 40-50 [2008]
Smallholder system innovations in integrated watershed management strategies of water for food and environmental security in drought-prone tropical and subtropical agro-ecosystems
Y Bhatt, D Bossio, E Enfors, L Gordon, V Kongo, JK Rotich, H Makurira, K Masuki, M
Mul, SD Tumbo
SSI working paper 109. Colombo, Sri Lanka: International Water Management
Institure (IWMI) [2006]
Knowledge Sharing and Communication Strategy in Agricultural Water Innovation Systems in Makanya Catchment, Same District, Tanzania
Kenneth FG Masuki, Mary C Shetto, ZA Mattee, Siza D Tumbo, Filbert B
Rwehumbiza, Henry F Mahoo, Omary Mhina
Innovation Africa Symposium 2006 held on 21st–23rd November [2006]
Investigation of Soil loss and Runoff in Ladder Terraces in Uluguru Mountains
RML Kingamkono, FC Kahimba, AKR Tarimo, SD Tumbo
Journal of the Institution of Engineers Tanzania 1 (8), 18-28 [2005]
Indigenous knowledge as decision support tool in rainwater harvesting
BP Mbilinyi, SD Tumbo, HF Mahoo, EM Senkondo, N Hatibu
Physics and Chemistry of the Earth, Parts a/b/c 30 (11-16), 792-798 [2005]
Existence and Adaptive development of Water System Innovations in Makanya Watershed in the Pangani River Basin, Tanzania
KFG Masuki, SD Tumbo, U Baltazary, N Hatibu, FB Rwehumbiza
5th WaterNet/WARFSA Symposium held on 2nd-4th [2004]