Assfaw Wossen, T.    

Firstname:T. 
Surname:Assfaw Wossen 
Email:t.wossen@cgiar.org 
Institute:IITA - Kenya 
Homepage:http://www.iita.org 

42 publications (0 read)





Publications as Author



2025

Seed certification, certified seeds use and yield outcomes in Nigeria: Insights from nationally-representative farm panel data and seed company location data, Takeshima, H., Ragasa, C., Bamiwuye, T., Andam, K. S., Spielman, D., Edeh, H. O., Fasoranti, A., Haile, B., Nwagboso, C., Omoigui, L., Abdoulaye, T., Kumar, P. L. and Assfaw Wossen, T., in: Agricultural Systems, volume 224, number -: 104268, pages 1-18, ISSN 0308-521X, 2025. [DOI]
 

2024

Why contexts matter for gender equal outcomes in research-based plant breeding: the case of maize in Nigeria, Yami, M.*, Cavicchioli, M., Cole, S. M., Assfaw Wossen, T. and Abdoulaye, T., in: Economic Botany, pages 1-20, ISSN 0013-0001, 2024. [DOI]
 
Effects of site-specific fertilizer recommendations and integrated soil fertility management practices on crop yields and incomes in the Ethiopian highlands: baseline report, Alene, A., Assfaw Wossen, T., Ampadu-Boakye, T., Tigabie, A. and Desta, G., 2024.
 
Estimating seed demand in the presence of market frictions: evidence from an auction experiment in Nigeria, Assfaw Wossen, T., Spielman, D., Alene, A. and Abdoulaye, T., in: Journal of Development Economics, volume 167, number -: 103242, pages 1-17, ISSN 0304-3878, 2024. [DOI]
 

2023

Uptake of agroforestry-based crop management in the semi-arid Sahel - Analysis of joint decisions and adoption determinants, Grovermann, C., Rees, C., Beye, A.*, Assfaw Wossen, T., Abdoulaye, T. and Cicek, H., in: Frontiers in Sustainable Food Systems, volume 7, number -: 1042551, pages 1-17, ISSN 2571-581X, 2023. [DOI]
 
Impact assessment of Striga resistant maize varieties and fertilizer use in Ghana: a panel analysis, Martey, E.*, Etwire, P. M.*, Assfaw Wossen, T., Menkir, A. and Abdoulaye, T., in: Food and Energy Security, volume 12, number 2: e432, pages 1-17, ISSN 2048-3694, 2023. [DOI]
 
Inferential and behavioral implications of measurement error in agricultural data, Abay, K. A., Assfaw Wossen, T., Abate, G. T., Stevenson, J., Michelson, H. and Barrett, C. B., in: Annual Review of Resource Economics, volume 15, pages 63-83, ISSN 1941-1340, 2023. [DOI]
 
Demand for quality planting material of improved cassava varieties in Nigeria, Assfaw Wossen, T. and Spielman, D., 2023.
 
Drivers of transformation of the maize sector in Nigeria, Assfaw Wossen, T., Menkir, A., Alene, A., Abdoulaye, T., Ajala, S., Badu-Apraku, B., Gedil, M., Mengesha Abera, W. and Meseka, S. K., in: Global Food Security, volume 38, number -: 100713, pages 1-12, ISSN 2211-9124, 2023. [DOI]
 

2022

Seed certification and maize, rice and cowpea productivity in Nigeria: an insight based on nationally representative farm household data and seed company location data, Takeshima, H., Abdoulaye, T., Andam, K. S., Edeh, H. O., Fasoranti, A., Haile, B., Kumar, P. L., Nwagboso, C., Ragasa, C., Spielman, D. and Assfaw Wossen, T., IFPRI discussion paper 02147, 2022. [DOI]
 
Misperceiving and misreporting input quality: implications for input use and productivity, Assfaw Wossen, T., Abay, K. A. and Abdoulaye, T., in: Journal of Development Economics, volume 157, number -: 102869, pages 1-15, ISSN 0304-3878, 2022. [DOI]
 

2021

The poverty impacts of improved soybean technologies in Malawi, Hirpa Tufa, A., Alene, A., Manda, J., Feleke, S., Assfaw Wossen, T., Akinwale, M. G., Chikoye, D. and Manyong, V., in: Agrekon, pages 1-20, ISSN 0303-1853, 2021. [DOI]
 
Rural schools as effective hubs for agricultural technology dissemination: experimental evidence from Tanzania and Uganda, Kpaka, H. M., Assfaw Wossen, T., Stein, D., Mtunda, K., Laizer, L.*, Feleke, S. and Manyong, V., in: European Review of Agricultural Economics, pages 1-37, ISSN 0165-1587, 2021. [DOI]
 

2020

A review of varietal change in roots, tubers and bananas: consumer preferences and other drivers of adoption and implications for breeding, Dufour, D., Vernier, P., Mwanga, R. O., Parker, M., Schulte-Geldermann, E., Teeken, B., Assfaw Wossen, T., Gotor, E., Kikulwe, E., Tufan, H. A., Sinelle, S., Kouakou, A. M., Friedmann, M., Polar, V. and Hershey, C., in: International Journal of Food Science and Technology, pages 1-17, ISSN 0950-5423, 2020. [DOI]
 
Review of solar dryers for agricultural products in Asia and Africa: an innovation landscape approach, Udomkun, P., Romuli, S., Schock, S., Mahayothee, B.*, Sartas, M., Assfaw Wossen, T., Njukwe, E., Vanlauwe, B. and Muller, J., in: Journal of Environmental Management, volume 268, number -: 110730, pages 1-14, ISSN 0301-4797, 2020. [DOI]
 
Variability of provitamin A carotenoids in plantain: influence of cultivar, bunch type, maturation stage, and location, Udomkun, P., Masso, C., Swennen, R., Assfaw Wossen, T., Amah, D., Fotso Kuate, A., Lienou, J., Adesokan, M., Njukwe, E. and Vanlauwe, B., in: Journal of Food Composition and Analysis, volume 94, number -: 103636, pages 1-17, ISSN 0889-1575, 2020. [DOI]
 
Integrated health interventions for improved livelihoods: a case study in Ethiopia, Kassie, M., Abro, Z., Assfaw Wossen, T., Ledermann, S. T., Diiro, G., Ballo, S. and Belayhun, L., in: Sustainability, volume 12, number 6: 2284, pages 1-21, ISSN 2071-1050, 2020. [DOI]
 
Economic impacts of fall armyworm and its management strategies: evidence from southern Ethiopia, Kassie, M., Assfaw Wossen, T., De Groote, H., Tefera, T., Sevgan, S. and Balew, S., in: European Review of Agricultural Economics, volume 47, number 4, pages 1473-1501, ISSN 0165-1587, 2020. [DOI]
 
The cassava seed system in Nigeria: opportunities and challenges for policy and regulatory reform, Assfaw Wossen, T., Spielman, D., Abdoulaye, T. and Kumar, P. L., RTB working paper, No. 2020-2, 2020. [DOI]
 

2019

The productivity and income effects of adoption of improved soybean varieties and agronomic practices in Malawi, Hirpa Tufa, A., Alene, A., Manda, J., Akinwale, M. G., Chikoye, D., Feleke, S., Assfaw Wossen, T. and Manyong, V., in: World Development, volume 124, pages 1-10, ISSN 0305-750X, 2019. [DOI]
 
The poverty impacts of improved cowpea varieties in Nigeria: a counterfactual analysis, Manda, J., Alene, A., Hirpa Tufa, A., Abdoulaye, T., Assfaw Wossen, T., Chikoye, D. and Manyong, V., in: World Development, volume 122, pages 261-271, ISSN 0305-750X, 2019. [DOI]
 
Eco-efficiency and agricultural innovation systems in developing countries: evidence from macro-level analysis, Grovermann, C., Assfaw Wossen, T., Muller, A. and Nichterlein, K., in: PloS ONE, volume 14, number 4: e0214115, pages 1-16, ISSN 1932-6203, 2019. [DOI]
 
Access to information, price expectations and welfare: the role of mobile phone adoption in Ethiopia, Haile, M. G., Assfaw Wossen, T. and Kalkuhl, M., in: Technological Forecasting and Social Change, volume 145, pages 82-92, ISSN 0040-1625, 2019. [DOI]
 
Agricultural technology adoption and household welfare: measurement and evidence, Assfaw Wossen, T., Alene, A., Abdoulaye, T., Feleke, S. and Manyong, V., in: Food Policy, pages 1-9, ISSN 0306-9192, 2019. [DOI]
 
Estimating the productivity impacts of technology adoption in the presence of misclassification, Assfaw Wossen, T., Abdoulaye, T., Alene, A., Nguimkeu, P., Feleke, S., Rabbi, I. Y., Haile, M. G. and Manyong, V., in: American Journal of Agricultural Economics, volume 101, number 1, pages 1-16, ISSN 0002-9092, 2019. [DOI]
 

2018

Occurrence of aflatoxin in agricultural produce from local markets in Burundi and eastern Democratic Republic of Congo, Udomkun, P., Mutegi, C., Assfaw Wossen, T., Atehnkeng, J., Nabahungu, N. L., Njukwe, E., Vanlauwe, B. and Bandyopadhyay, R., in: Food Science & Nutrition, pages 1-13, ISSN 2048-7177, 2018. [DOI]
 
Impacts of improved maize varieties in Nigeria: ex-post assessment of productivity and welfare outcomes, Abdoulaye, T., Assfaw Wossen, T. and Awotide, B.+, in: Food Security, volume 10, pages 369-379, ISSN 1876-4517, 2018. [DOI]
 
Incidence and farmers' knowledge of aflatoxin contamination and control in eastern Democratic Republic of Congo, Udomkun, P., Assfaw Wossen, T., Nabahungu, N. L., Mutegi, C., Vanlauwe, B. and Bandyopadhyay, R., in: Food Science & Nutrition, pages 1-14, ISSN 2048-7177, 2018. [DOI]
 
"Estimating the productivity impacts of technology adoption in the presence of misclassification" - author response to comment, Assfaw Wossen, T., Abdoulaye, T., Alene, A., Nguimkeu, P., Feleke, S., Rabbi, I. Y., Haile, M. G. and Manyong, V., in: American Journal of Agricultural Economics, pages 1, ISSN 0002-9092, 2018. [DOI]
 
Ethiopia's agricultural transformation: agribusiness' contribution to reducing youth unemployment, Assfaw Wossen, T. and Ayele, S., in: IDS Bulletin, volume 49, number 5, pages 15-30, ISSN 0265-5012, 2018. [DOI]
 
Poverty reduction effects of agricultural technology adoption: the case of improved cassava varieties in Nigeria, Assfaw Wossen, T., Alene, A., Abdoulaye, T., Feleke, S., Rabbi, I. Y. and Manyong, V., in: Journal of Agricultural Economics, pages 1-16, ISSN 0021-857X, 2018. [DOI]
 
Estimating returns to fertilizer adoption with unobserved heterogeneity: evidence from Ethiopia, Assfaw Wossen, T., Gatiso, T. T. and Kassie, M., in: Food and Energy Security, pages 1-9, ISSN 2048-3694, 2018. [DOI]
 

2017

A manual for large-scale sample collection, preservation, tracking, DNA extraction, and variety identification analysis, Girma Tessema, G., Rabbi, I. Y., Olanrewaju, A., Alaba, O. A., Kulakow, P., Alabi, T. R., Ayedun, B., Abdoulaye, T., Assfaw Wossen, T. and Manyong, V., International Institute of Tropical Agriculture (IITA), 2017.
 
Cassava farmers' preferences for varieties and seed dissemination system in Nigeria: gender and regional perspectives, Bentley, J. W.*, Olanrewaju, A., Madu, T.*, Olaosebikan, O., Abdoulaye, T., Assfaw Wossen, T., Manyong, V., Kulakow, P., Ayedun, B., Ojide, M., Girma Tessema, G., Rabbi, I. Y., Asumugha, G.* and Tokula, M.*, IITA Monograph, International Institute of Tropical Agriculture (IITA), ISBN 978-978-8444-82-4, 2017.
 
Can smallholder farmers adapt to climate variability, and how effective are policy interventions? Agent-based simulation results for Ethiopia, Berger, T., Troost, C., Assfaw Wossen, T., Latynskiy, E., Tesfaye, K. and Gbegbelegbe, S., in: Agricultural Economics, pages 1-14, ISSN 0169-5150, 2017. [DOI]
 
Impact of climate change, weather extremes, and price risk on global food supply, Haile, M. G., Assfaw Wossen, T., Tesfaye, K. and von Braun, J., in: Economics of Disasters and Climate Change, volume 1, number 1, pages 55-75, ISSN 2511-1280, 2017. [DOI]
 
Measuring the impacts of adaptation strategies to drought stress: the case of drought tolerant maize varieties, Assfaw Wossen, T., Abdoulaye, T., Alene, A., Feleke, S., Menkir, A. and Manyong, V., in: Journal of Environmental Management, volume 203, number 1, pages 106-113, ISSN 0301-4797, 2017. [DOI]
 
Impacts of extension access and cooperative membership on technology adoption and household welfare, Assfaw Wossen, T., Abdoulaye, T., Alene, A., Haile, M. G., Feleke, S., Olanrewaju, A. and Manyong, V., in: Journal of Rural Studies, volume 54, pages 223-233, ISSN 0743-0167, 2017. [DOI]
 
The cassava monitoring survey in Nigeria: final report, Assfaw Wossen, T., Girma Tessema, G., Abdoulaye, T., Rabbi, I. Y., Olanrewaju, A., Bentley, J. W.*, Alene, A., Feleke, S., Kulakow, P., Asumugha, G.*, Abass, A., Tokula, M.* and Manyong, V., 2017.
 
Productivity and welfare effects of Nigeria's e-voucher-based input subsidy program, Assfaw Wossen, T., Abdoulaye, T., Alene, A., Feleke, S., Ricker-Gilbert, J., Manyong, V. and Awotide, B. A., in: World Development, volume 97, pages 251-265, ISSN 0305-750X, 2017. [DOI]
 
Impacts of climate variability and food price volatility on household income and food security of farm households in east and west Africa, Assfaw Wossen, T., Berger, T., Haile, M. G. and Troost, C., in: Agricultural Systems, pages 1-9, ISSN 0308-521X, 2017. [DOI]
 

2016

You are not alone: social capital and risk exposure in rural Ethiopia, Assfaw Wossen, T., Di Falco, S., Berger, T. and McClain, W., in: Food Security, volume 8, pages 799-813, ISSN 1876-4517, 2016. [DOI]