Till Stellmacher

Till Stellmacher


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 December 2022 in Agriculture
Verified
Journal Article
Open access
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AAAhmed Abdalla
Ahmed Abdalla
TSTill Stellmacher
Till Stellmacher
MBMathias Becker
Mathias Becker
Egypt is the largest wheat importer in the world; however, it produces only half of the 20 million tons of wheat that it consumes annually. The population of Egypt is currently growing by 1.94% per year, and projections predict that the demand for wheat will be nearly doubled by 2050. Russia and Ukraine are major wheat exporters to Egypt and globally, shipping grains from ports in the Black Sea. The ongoing conflict aggravates the already precarious food security situation in Egypt and many other import-dependent countries in Africa and Asia by disrupting supplies and accelerating food price hikes. Wheat is a strategic commodity in Egypt. Its production is a question of political stability. Against this backdrop, the Egyptian government declared gaining wheat self-sufficiency as a strategic aim. This study provides an overview of the degree and trends of cultivated wheat area, yield, production, and wheat self-sufficiency in Egypt between 2000 and 2020, followed by a qualitative analysis determining external pressures and system-immanent drivers that had an impact on wheat self-sufficiency in the past two decades in view of predicting future pathways to achieve wheat self-sufficiency in a sustainable way. The study underlines some critical external pressures such as agricultural policies, (subsidized) production inputs, climate conditions, global wheat supply chains, and system-immanent drivers such as domestic wheat supply prices and yields influencing the area of wheat cultivation and its productivity. There is a significant need to implement more effective and long-term sustainable agricultural policies in order to make wheat production in Egypt (more) attractive and feasible for smallholders again.
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12 September 2019 in Sustainability
Verified
Journal Article
Open access
PDF file
TSTill Stellmacher
Till Stellmacher
GKGirma Kelboro
Girma Kelboro
Despite economic development and social improvements, millions of family farmers in Ethiopia are still struggling with food insecurity. Lack of technology adoption by family farmers is often considered as the root cause for low agricultural productivity and persistence of food insecurity. Based on a study of family farms in southwestern Ethiopia, we show the complex nexus between family farming, food insecurity, and agricultural productivity. We collected qualitative and quantitative data through 300 sample household interviews; expert interviews with elders and village chairmen, agricultural extension agents, farmers’ cooperative heads, as well as experts in NGOs, research institutes, and state agencies; and on-farm observations with in-depth interviews and discussions with individual farmers. Our findings illustrate that everyday experiences, culture, knowledge, and priorities of farmers coupled with ecological and political factors play crucial roles—and need more consideration than the classic ‘lack of technology’ theorem.

12 March 2018 in Natural Resources Forum
Verified
Journal Article
Closed access
PDF file
GLGerba Leta
Gerba Leta
GKGirma Kelboro
Girma Kelboro
TSTill Stellmacher
Till Stellmacher
Kristof Van AsscheKristof Van Assche
Kristof Van Assche
HAHornidge Anna-Katharina
Hornidge Anna-Katharina

9 August 2022 in Agriculture
Verified
Journal Article
Open access
PDF file
DNDorothy Birungi Namuyiga
Dorothy Birungi Namuyiga
TSTill Stellmacher
Till Stellmacher
CBChristian Borgemeister
Christian Borgemeister
JGJeroen Groot
Jeroen Groot
Pigeon pea (Cajanus cajan) remains an under-researched ‘orphan crop’ yet is important for food and nutrition security of smallholders. Furthermore, smallholders are heterogeneous, with varying perceptions and resource capacities. Against this backdrop, we clustered smallholders and assessed their preferences for pigeon pea. Data were gathered through a cross-sectional survey of 257 smallholders from northern Uganda, corroborated with key informant interviews. Using multivariate analysis, we generated six clusters that explained 63% of the total variance. Three farm types (LEX—low-resourced and experienced, LUN—low-resourced and inexperienced, and LED—low-resourced and educated) represented 15, 10, and 17% of the farms, respectively, and were resource-constrained with low farm size, low livestock units, low education level and low pigeon pea sales. Three other types (MEX—medium-resourced and experienced, HEX—high-resourced and experienced, HED—high-resourced and educated) represented 7, 6, and 7% of the samples and were highly-resourced given their above-average level of endowment. Pigeon pea was mainly produced for household consumption, especially by the low-resourced farm types. Across farm types, smallholders preferred pigeon pea because it fixed nitrogen (94%), is relatively easy to harvest (90%) and it provided more biomass (89%) compared to other crops. The developed typology allows for tailored pro-poor agricultural policies to address particular necessities of specific farm types. Understanding varied preferences can facilitate investments into improving pigeon pea traits, which are particularly desirable and appropriate for smallholders.

28 April 2023 in Agriculture
Verified
Journal Article
Open access
PDF file
AAAhmed Abdalla
Ahmed Abdalla
MBMathias Becker
Mathias Becker
TSTill Stellmacher
Till Stellmacher
In Egypt, recent shortfalls in the wheat supply from Russia and Ukraine have necessitated substantial increases in domestic production. As agricultural practices influence the yield of bread wheat, we assessed current production strategies in the wheat-based systems of Egypt and investigated their effects on wheat productivity in four study areas in the Nile Delta. We used a multi-stage random sampling technique to select 246 wheat-producing farmers and applied structured questionnaires to assess farming practices and crop performance attributes. Data were analyzed by using descriptive statistics, analysis of variances, and multiple regression models. Wheat farmers were on average 56 years old with about 30 years of farming experience. Land holdings were rather small, with an average of 1.05 hectares and a mean wheat yield of 6.4 metric tons (t)/hectare (ha). Farmers devote 5 times per season. Most farmers had poor knowledge of modern agronomic practices and inadequate access to information. To enhance domestic production in Egypt, there is a need for fiscal incentives, permitting or stimulating wheat-producing farmers to devote larger shares of their cropland to wheat cultivation. In addition, policies must enable wheat producers to improve their productivity by implementing adequate and sustainable agricultural practices such as crop rotations, balanced mineral nutrient supply, and the use of organic amendments. However, the most important factors are interventions and technologies that improve provision and increase the use efficiency of irrigation water.
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3 August 2023 in Agriculture
Verified
Journal Article
Open access
PDF file
AAAhmed Abdalla
Ahmed Abdalla
TSTill Stellmacher
Till Stellmacher
MBMathias Becker
Mathias Becker
Most of the approximately 105 million Egyptians depend on wheat in the form of baladi bread for their daily diet. Millions of smallholders along the River Nile have produced wheat for millennia; however, in more recent history, the wheat demand and supply ratio has dramatically changed. The first wheat imports in Egyptian history were in 1966. Today, domestic production meets only half of the wheat consumption, and Egypt has become the largest wheat importer in the world. Before the Russia–Ukraine war, 85% of the wheat imports to Egypt came from Russia and Ukraine. The war and the associated disruption of the wheat supply chains has put Egypt on the top list of so-called “developing countries highly threatened by food crises”. Against this backdrop, we analyzed decision-making factors and perceptions of wheat-producing smallholders in the Nile River Delta, the wheat basket of Egypt. The study draws on nine months of empirical fieldwork in the Nile River Delta. We employed a mixed approach to data collection, combining interviews and focus group discussions with smallholders, experts, and agriculture extension agents with transect walks and field observations. In total, 246 randomly selected wheat-growing smallholders were interviewed in four divisions in the Nile River Delta. Our findings show that the production of wheat by smallholders is highly influenced by system-immanent factors, such as subsistence need for home consumption and the presence and intensity of animal husbandry, as well as by external factors, such as the domestic prices for wheat determined by the government in each season and the time of the declaration of these prices. These factors affect smallholders’ decisions to increase or decrease their wheat cultivation area. However, the study also showed that the factors influencing farmers’ decisions to grow wheat or implement innovative practices vary across different areas within the same region. Smallholders struggle with poor access to fundamental production factors and are discontented with the low provision of extension and support services as well as poor market structures. These constraints act as disincentives for smallholders to produce (more) wheat. They need to be addressed and eliminated to increase domestic production and to reduce Egypt’s dependency on expensive and unreliable wheat imports.