Kevin Pixley, Deputy Director General for Research (Breeding and Genetics), a.i., and Director of the Genetic Resources Program, said, “This was not easy due to the challenges of gathering and analyzing complex data, but it’s a very important milestone for CIMMYT. Peer review in a highly respected journal is a gold standard that gives external critique and endorsement to the impact assessment methods used and estimates reported for CIMMYT and IITA’s work with partners in Africa.”
Around 60 percent of the 1,345 maize varieties released in this twenty-year period had a known CGIAR parentage.
Approximately 34 percent of the total maize area in 2015 was cultivated with CGIAR-related maize varieties from 1995 onwards, equivalent to 9.5 million hectares (ha); 13 percent of the maize area was under CGIAR-related varieties released before 1995.
The new maize varieties hold an economic benefit for the region, with an estimated value of US $1.1-1.6 billion in 2015 equally attributed to CGIAR, public-sector national research and extension programs, and private sector partners. With maximum annual investment in CGIAR maize breeding sitting at US $30 million, the estimated benefit-cost ratio for investment was between 12:1-17:1, depending on the underlying assumptions.
“This paper is a valuable contribution to literature on impact assessment, highlighting the real challenges and approaches to quantify impact of work that is a collaboration among many,” continued Pixley. “Both the methodologies and impact estimates will be valuable to researchers and funders of plant breeding programs.”
How to track adoption and assess the impact of maize and wheat varieties? Some of the methods used until now, like farmers’ recall surveys, have various limitations. In addition to relying exclusively on people’s memory and subjectivity, they are difficult to replicate and prone to errors.
DNA fingerprinting, on the other hand, allows objective evaluation and is considered the “gold standard” method for adoption and impact assessments.
It consists of a chemical test that shows the genetic makeup of living things, by separating strands of DNA and revealing the unique parts of their genome. The results show up as a pattern of stripes that can be matched against other samples.
This technique is extremely helpful in tracking crop varieties and monitoring their adoption. It can be used to assess the impact of research-for-development investments, guide breeding and seed system strategies, implement the intellectual property rights of breeders, assess the use of crop genetic resources, and informing policy.
On June 25, 2019, the International Maize and Wheat Improvement Center (CIMMYT) held a half-day workshop in Addis Ababa to discuss the use and application of DNA fingerprinting in Ethiopia for the tracking of crop varieties.
High-level government officials and major players in the agricultural sector were interested in learning more about the policy implications of this tool and how to mainstream its use.
CIMMYT’s Socioeconomics Program Director, Olaf Erenstein (left), talks to Eyasu Abraha, Minister of Agriculture and Natural Resources (center), and Mandefro Nigussie, Director General of the Ethiopian Institute of Agricultural Research.
Introducing DNA fingerprinting in Ethiopia
The main DNA fingerprinting project in Ethiopia has been in operation since January 2016, focusing on the country’s two major staple crops: wheat and maize. The project covers the Amhara, Oromia, SNNPR, and Tigray regions, which together account for 92% and 79% of the national wheat and maize production.
The Bill & Melinda Gates Foundation has funded the project, which was jointly implemented by CIMMYT, the Ethiopian Institute of Agricultural Research (EIAR), Ethiopia’s Central Statistical Agency (CSA) and Diversity Arrays Technology (DArT).
The main objective of the project was to generate a knowledge base for the practical use of DNA fingerprinting, to mainstream the use of this technology, and to offer policy options and recommendations.
CIMMYT scientists Dave Hodson (left), Bekele Abeyo (center) and Sarah Hearne participated in the workshop.
Better monitoring for wheat self-sufficiency
At the workshop, researchers presented two policy briefs specific to Ethiopia: one focusing on policy implications of DNA fingerprinting for tracking bread wheat varieties and another one on how to revitalize the durum wheat sub-sector.
Speaking at the workshop, Eyasu Abraha, Minister of Agriculture and Natural Resources, noted that the government planned to achieve wheat grain self-sufficiency in the next few years by increasing wheat productivity in the highlands and expanding wheat production to the lowlands through irrigation. In this regard, improved crop variety development and dissemination is one of the key elements to increase agricultural productivity and improve the livelihood of millions of smallholder farmers.
According to Abraha, more than 130 wheat varieties have been released or registered in Ethiopia since the late 1960s, in collaboration with international research organizations. Public and private seed enterprises have multiplied and distributed these varieties to reach smallholder farmers.
Even though adoption studies have been conducted, there is still a strong need for more accurate and wider studies. In addition to tracking adoption and demand, using DNA fingerprinting could help understand the distribution of varieties across space and time.
Sometimes innovations fail to make an impact. Take 3D televisions, for example; launched at a large scale more than a decade ago, they did not achieve the expected commercial success. On paper, the technology was an affordable and thrilling breakthrough in home entertainment, but in practice many viewers failed to embrace it due to poor implementation. Today, it has largely fallen by the wayside.
Farming innovations can suffer similar fates if product designers do not consider the overall socioeconomic picture during development, warns Munyaradzi Mutenje, an agricultural economist with the Socioeconomics program of the International Maize and Wheat Improvement Center (CIMMYT).
“When the direct seed drill was first launched in Zimbabwe, farmers did not take to it,” Mutenje explains. “Here was a technology that could reduce the drudgery of hand sowing — vastly reducing labor costs and saving time — but no one wanted it. The scientists asked ‘why is no-one adopting this seed drill we designed? It solves so many production challenges… Why don’t people want it?’”
It transpired that women, who constitute a significant portion of the farming community in Zimbabwe, simply found the direct seed drill too heavy and awkward for practical use. They chose to stick with traditional farming methods and were skeptical of the new technology. In short, the product was not designed with the end user in mind.
Design that meets farmers’ needs
Mutenje stands next to a demonstration plot of maize during a field day organized by CIMMYT and Agriseeds. (Photo: CIMMYT)
Mutenje works in close association with CIMMYT’s sustainable intensification team in Zimbabwe, adding value by opening a dialogue with many different types of farmers. “From the basket of sustainable intensification technologies available, which one is appropriate for each type of farmer?” she asks herself when designing new interventions.
Technologies can seem good to scientists, but they might not be suitable for farmers, who operate within a system of which agriculture is only one component.
“You have to look at the situation from the farmers’ perspective,” Mutenje explains. “In order to assess the economic viability of innovations and to understand how and where to target them, we have to look at factors like social acceptance and cultural barriers that might constrain adoption within farming communities.”
Once technologies are rolled out to farmers, it is vital to seek feedback about the demand for new, and reviews of existing, technologies. This allows scientists to tailor their innovations to the needs and objectives of farmers.
“When we design technologies that meet farmers’ needs because we have interacted with them and understood the whole system; that is our greatest impact.”
All roads lead to CIMMYT
Growing up on a farm in rural Zimbabwe instilled in Mutenje a deep respect for women’s role in agriculture in southern Africa. With her father engaged in off-farm work, her mother tended the farm. She grew curious about household decision-making and was inspired to pursue a career in agricultural science, first studying at the University of Zimbabwe before obtaining her doctoral degree at the University of KwaZulu-Natal in South Africa with a thesis on the effects of AIDS on rural livelihoods.
“I was inspired by the multidisciplinary nature of science and how its application to farming allows scientists to directly help feed people and really transform people’s lives.”
During her undergraduate studies, Mutenje learned from CIMMYT scientists who offered her class practical agronomic examples and taught the students how to apply data analysis to solve complex problems. Fascinated by the power of data to elucidate patterns that can help scientists, she resolved, “One day I will work for CIMMYT to address food and nutritional security issues in southern Africa!”
In 2012, her aspirations became reality as she joined CIMMYT in Zimbabwe as a postdoctoral fellow. Today, she is a CIMMYT scientist.
Work that sparks joy
Working with the CIMMYT sustainable intensification program on projects spanning five countries in southern Africa, Mutenje finds joy in working alongside partners as part of a large team. “You become one big family,” she reflects.
She feels pride in working with smallholder farmers and transforming their livelihoods through science. By boosting the knowledge and potential of women in particular, she believes that sustainable, positive change is possible.
“Women are the custodians of food and nutritional security, so we need to understand their challenges and opportunities. If you help women and offer them training, their impact will go far since they will pass their knowledge on to their children.”
Mutenje carries out a qualitative vulnerability assessment in Bvukuru community, Masvingo province, Zimbabwe, to feed into a study for a project funded by the Centre for Coordination of Agricultural Research and Development for Southern Africa (CCARDESA) and Gesellschaft fuer Internationale Zusammenarbeit GmbH (GIZ). (Photo: CIMMYT)
Policy change to help farmers
Although working directly with farmers is what Mutenje enjoys the most, she concedes that prompting widespread change often calls for deeper scrutiny of the value chain, to identify bottlenecks that constrain adoption. Gathering empirical data and presenting evidence of the complete story to policymakers has enabled Mutenje to influence policy change on a national scale.
“In Mozambique, we discovered fertilizer costs were too high for farmers, so they were missing out on a technology that would enable increased yields.”
Mutenje’s work analyzed the whole system and found the import tax on fertilizer component materials was too high and that manufacturers were simply handing that cost down to the farmers. By highlighting this issue to government representatives, she triggered a change in import tax policy. This initiative resulted in fertilizer prices that are affordable to farmers, facilitating improved yields and livelihoods.
“An evidence-based approach, based on quantitative and qualitative data from multiple sources allows scientists to present the complete story,” she explains. “Armed with this, we can convince policymakers to make changes to help farmers and improve food security.”
