Category Archives: Feature

Towards a community of practice around cassava: Report from Sierra Leone and Ghana

With contributions from Abdul R Conteh and Isata Kargbo

Members from the NextGen Cassava team visited Sierra Leone from 2-5 July 2018 to integrate the Sierra Leone Agricultural Research Institute (SLARI) into NextGen Cassava under the Community of Practice (CoP).

The team members included Alfred Dixon, Chiedozie Egesi, and Peter Kulakow, all from the International Institute of Tropical Agriculture (IITA) in Ibadan, Nigeria. After arriving in Freetown, the team made courtesy calls to SLARI Headquarters, Ministry of Agriculture, and IITA-country office. At SLARI Headquarter, the Director General introduced the team to SLARI management staff and informed the audience about the purpose of the team’s visit to Sierra Leone.

Alfred Dixon, who was also the former Director General of SLARI, highlighted the importance of SLARI as a partnering institution for the NextGen cassava and the TAAT (Technologies for African Agricultural Transformation) projects. Dixon went on further to unveil the prospects of the TAAT project for Sierra Leone in the first year.

TAAT will work closely with existing projects in upscaling shelf technologies developed by SLARI over the past years through the compact policy document and the introduction of SAH (Semi Autotrophic Hydroponics) technology.  In particular, Dixon mentioned the growing interest demonstrated by Irish Aid on the Provitamin-A cassava (yellow cassava) research to enhance nutritional efficiencies in Sierra Leone.

Chiedozie Egesi, NextGen Cassava’s project coordinator, gave SLARI a presentation on the NextGen cassava project. The project is led from Cornell University with implementing countries located in Africa. The first phase has been successfully completed while the 2nd phase, for which Sierra Leone is a member country, was launched few months ago and is on-going.  This phase will provide technical support in the form of capacity building on varietal release, electronic data capturing, quality data management, cassava database, flowering improvement technology and effective germplasm exchange program to national breeding programs for some selected countries in Africa.

The team also visited the Ministry of Agriculture where they were accorded a warm welcome by the Honorable Minister of Agriculture and his Deputy. In Dixon‘s opening remarks, he mentioned the low levels of productivity Sierra Leone has realized over the past years, which has triggered the intervention of the African Development Bank’s “Feed Africa” initiative under the “High Fives” priorities in Africa.  Dixon went on further to inform the minister about the TAAT program under the Feed Africa initiative for African Countries funded by ADB for which Sierra Leone is member country.  He asked the minister to kindly follow up on Irish Aid as they have expressed interest in nutrition research in Sierra Leone and crop processing zones.

Egesi presented to the minister and his team the objectives of the NextGen cassava project. The minister was very pleased, and confessed that his hope has been restored after this brief interactions and that his ministry is open and willing to work and partner with CGIAR centers more than before.  He extended an invitation to Dixon to be a member of Advisory committee that would be advising him and his team to transform Sierra Leone’s agriculture. The honorable minister accepted the invitation extended to him by IITA DG as he concluded by laying emphasis on the successful model used on cassava flour in Nigeria to be replicated in Sierra Leone.

The team then departed for Njala to continue oral presentation session, assessment of field trials and Laboratory facilities at the Njala Agricultural Research Center (NARC), Njala. After meeting with the NARC center director and presentations from the NARC cassava breeders (Festus Massaquoi, Kumba Koroma and Isata Kargbo), NextGen team members were then taken on a tour of infrastructural facilities at the Njala Agricultural Research Centre.

This tour included visits to the Soil and Plant Analysis Laboratory, Food and Nutrition Laboratory, Biotechnology and Tissue Culture Laboratories, and the newly constructed Post-Harvest Laboratory.  Following the laboratory visit, the team viewed the trials for the cassava breeding clonal and seedling nursery located at the Njala Crop site in Moyamba district, representing the transitional rain forest. Possible solutions, interventions and entering points were discussed as to how the NextGen Cassava project can positively contribute to the cassava breeding program in Sierra Leone to help it meet international standards.

Following the visit to Sierra Leone, the NextGen Cassava COPP was launched at Council for Scientific and Industrial Research- Crop Research Institute (CSIR-CRI) in Kumasi, Ghana during 6-7 July 2018.

CRI Director Dr Stella Ama-Ennin highlighted the importance of having her institute join NextGen since it is the center of specialization for Cassava for West Africa. It also plays a key role in enhancing the country’s Presidential Initiative for Cassava called “One district- One factory” Programme which involves a processing center in each of the rural areas. She also highlighted the challenges in cassava breeding in Ghana and expressed her joy that that these could be alleviated with NextGen Cassava’s tools and support.

Collaborative database development: Lessons from the NextGen experience

By Canaan Boyer

What does it take to create and maintain an open-access genomic database? This is the question that faced the Boyce Thompson Institute, which has been a part of the Next Generation Cassava Breeding project since its inception. Over the years, BTI has developed and supported Cassavabase, an open-access online repository for information from cassava breeding trials. More importantly, however, it has also worked to build capacity in database management and development for NextGen Cassava’s African partners.

Team members from BTI make trips to Africa for field work and visits at partner institutions, an important component of the database development. In addition to this, every year, database managers and data analysts from each breeding institute involved in NextGen Cassava come to BTI to exchange information on database management and collaborate on what needs to be developed for Cassavabase. In these month-long stays, the team is able to engage in in-depth, comprehensive collaboration, ensuring that feedback to make sure Cassavabase continues to meet breeders’ needs is incorporated into the code.


Alex Ogbonna, Guillaume Bauchet, Rachel Mukisa, and Bryan Ellerbrock at a workshop during the 2017 annual meeting. Experience from fieldwork at partner institutions is critical to ensuring Cassavabase serves the needs of cassava breeders.

“Having all the database collaborators come together like this lets us discuss data curation and learn from each other,” said Guillaume Bauchet, who works at BTI managing Cassavabase. “The goal is to give autonomy to the teams to run their own databases at their institutions.”

Prasad Peteti of the International Institute of Tropical Agriculture (IITA), who has been coming to these trainings at BTI since the beginning of the project, reflected on how far the team has come. “Initially, we were coming to BTI just to learn about development and maintenance of databases. It was more of a one-way flow of information to gain the fundamentals. Now we are developing our own modules and more functionalities.”

Bauchet added, “At BTI, we actually learn a lot from the data and experiences that our partners bring back from their institutions. We’ve achieved a lot since Phase 1. A big part of that phase was all of the logistical things — getting a server, how to ship and install, and so on. That’s been sorted, so in the last couple of years, we’ve really been able to focus on developing tools responsive to the breeder’s needs instead.”

“Now we’re looking towards how we can make the database more useful and incorporate data from new tools, such as near-infrared spectroscopy (NIRS) into it. Phase 2 will focus more on creating a digital ecosystem with the partner institutes, an emphasis on quality, collecting data from farmers’ fields, and a full integration of genotyping data from field to lab.”

Those who have come to BTI for training include:

  • Afolabi Agbona and Prasad Peteti of the International Institute of Tropical Agriculture (IITA) in Nigeria
  • Racheal Mukisa of National Crops Resources Research Institute (NaCRRI) in Uganda
  • Uba Ezenwanyi of Tanzania Agricultural Research Institute (TARI)
  • Adeyemi Oloyede of the National Root Crops Research Institute (NRCRI) in Nigeria
  • Luciana Braatz de Andrade of the Brazilian Agricultural Research Corporation (Embrapa) in Brazil

In addition to the annual training/workshop, the database managers have weekly online meetings with Bauchet and frequently keep in touch with one another. Agbona and Peteti maintain the mirror of Cassavabase on servers hosted at IITA, and provide training to other institutions to help them begin to maintain their own databases.

NextGen partners highlight advances in cassava research at GCP21 2018

From June 11 to 15, members of the cassava research community came together in Cotonou, Benin to participate in the Global Cassava Partnership for the 21st Century (GCP21) conference. NextGen Cassava was well represented, with 23 project members in attendance and several NextGen-led presentations and sessions.

Header Image:Hernán Ceballos of CIAT describes how trait introgression can produce cassava with a single recessive trait, without losing other good qualities like high yield. Breeding methods like these allow efficient production of cassava varieties with desired qualities.

View the NextGen Cassava Twitter feed for more photos and session info from the conference.

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Partner Spotlight: Tanzania Agricultural Research Institute

By Samantha Hautea

More than 10 institutions are affiliated with NextGen Cassava. In our partner spotlights, we feature profiles on individual institutions and the role each institution plays in the project.

Tanzania officially joined the NextGen Cassava project as a partner in 2016. The partnership has been a productive one, and many positive results have come out of the collaboration. We interviewed Heneriko Kulembeka and Kiddo Mtunda, leads for the NextGen project in Tanzania, to learn more about the work being done in the country.

Header Photo: Heneriko Kulembeka (red) and Kiddo Mtunda (yellow) of TARI with Jonas Ambrose of the Mikocheni Agricultural Research Institute at a cassava seedling nursery in Chambezi Station. Photo by Samantha Hautea 

What is your institution’s name and its role in your country? What kinds of activities does it engage in?

Our institution’s name is the Tanzania Agricultural Research Institute (TARI). This is a semi-autonomous body of the government under the Ministry of Agriculture, responsible for conducting, regulating and coordinating all agricultural research activities in Tanzania. TARI’s mission is to generate and disseminate the application of knowledge and agricultural technologies as catalysts for change in achieving agricultural productivity, food and nutrition security, environmental sustainability, and economic growth, while involving stakeholders in the country and the global community.

Specific functions of TARI include but are not limited to: 1) Conduct, promote and coordinate basic, applied and strategic agricultural research; 2) Advise the government on the formulation of national policies, laws and regulatory frameworks for promoting and regulating agricultural research; 3) Set national agricultural research agenda and priorities in collaboration with key stakeholders.

On behalf of TARI, NextGen Cassava activities in Tanzania are conducted and coordinated by TARI Ukiriguru in Mwanza. Other institutions involved are TARI Ilonga, TARI Kibaha, and TARI Naliendele.


Heneriko Kulembeka at a cassava field trial at TARI Ukiriguru, Mwanza. Photo by Chris Knight.

What is TARI’s role in NextGen Cassava? 

TARI’s role in NextGen includes germplasm acquisition and utilization, testing genomic selection training population in Year 1 and Cycle 1 materials from current crosses to develop genomic prediction models, optimizing flowering and seed set,  integrating phenotyping tools like NIRS into breeding program, implementing on-farm/gender-responsive activities, and capacity building (human and infrastructure).


Kiddo Mtunda at a cassava seedling nursery in Chambezi station. Photo by Canaan Boyer

Are there any Masters/PhD students funded by NextGen at TARI? On what are they focused?

Yes. We had two TARI MSc students trained by NextGen Project Phase 1 on cassava breeding. In Phase 2, there are potential MSc/PhD students identified who will also focus on cassava breeding.

Has the partnership/involvement with NextGen benefited TARI? In what ways?

In Phase 1, TARI was able to accomplish the following:
a) Develop a training population
b) Estimate breeding values
c) Develop selection indices using economic weights
d) Select parents and planting crossing blocks
e) Identify testing environments
f) Prioritize traits prioritization and standardize processes
g) Conduct training on R, GS, experimental design, process maps and selection

In the future, we expect that researchers from NextGen and TARI will continue to work closely as one team.

How does NextGen fit into TARI’s overall mission and goals?

NextGen aims to increase the rate of crop improvement using new technologies, a goal which is in line with TARI’s mission as explained above.

Looking to the future, how do you see NextGen and TARI’s partnership developing in the next five years?

In the next five years, NextGen and TARI’s relationship will become stronger and stronger.