2020/01/10 Dresden, Germany
By Ksenia Kuritsyna, Communications and Advocacy
On 18 December 2019, the doctoral defence of Agossou Gadedjisso-Tossou came as a conclusion of his PhD journey as part of the Joint PhD Programme in Integrated Management of Water, Soil, and Waste, implemented in cooperation between UNU-FLORES and the Faculty of Environmental Sciences at Technische Universität Dresden (TU Dresden).
Dr Gadedjisso-Tossou worked on his research for three years under the joint supervision of Prof. Niels Schütze (TU Dresden) and Dr Tamara Avellán (UNU-FLORES). The thesis defence was jointly evaluated by the dissertation committee led by Prof. Niels Schütze (TU Dresden) and joined remotely by Associate Prof. Lala Iswari Prasad Ray (Central Agricultural University-Imphal, India) and Prof. Bancy Mbura Mati (Jomo Kenyatta University of Agriculture and Technology, Kenya).
Coming from Togo, Dr Gadedjisso-Tossou took up his PhD programme in October 2016 and successfully defended his thesis entitled “Impact of Climate and Soil Variability on Crop Water Productivity and Food Security of Irrigated Agriculture in Northern Togo (West Africa)”.
His research is focused on the future irrigation water demand in agriculture in West Africa with the major objective of evaluating crop responses to soil and climate variability under irrigated agriculture in West Africa for a specific site.
Addressing the gap in scientific knowledge on crop water productivity in agriculture in Togo, particularly the impact of soil physical and hydraulic characteristics and climate variability on crop yield, he altogether sought to enhance food security by improving crop water productivity in the country.
Basing his research on the Nexus Approach and thus including suggestions for those responsible for policymaking, Dr Gadedjisso-Tossou highlighted measures that need to be taken for a successful implementation of irrigation management strategies. Firstly, an improvement of the water supply, as well as irrigation infrastructure, would be needed to realise the objectives. To employ a broader, regional water management strategy, similar studies can be conducted in different locations of West Africa. Additionally, in order to obtain a more comprehensive assessment, Dr Gadedjisso-Tossou encourages researchers to include farmers’ socioeconomic and demographic characteristics in the study framework as well as to analyse maize crop genetic adjustment for obtaining more heat-tolerant crops.
The joint degree certificate from both UNU and TU Dresden was awarded to Dr Gadedjisso-Tossou, who in addition to the research work, also successfully completed the coursework on the basic concepts of the Water-Soil-Waste Nexus.
Gadédjisso-Tossou, Agossou, Tamara Avellán, and Niels Schütze. 2019. “An Economic-Based Evaluation of Maize Production under Deficit and Supplemental Irrigation for Smallholder Farmers in Northern Togo, West Africa”. Resources 8(4):1–11.
Gadédjisso-Tossou, Agossou, Tamara Avellán, and Niels Schütze. 2018. “Potential of Deficit and Supplemental Irrigation under Climate Variability in Northern Togo, West Africa”. Water 10(12):1–22.