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The “Stage Selection Gain 1to3”

Readme for SSG1to3 program

The “Stage Selection Gain 1to3” (SSG1to3) in R (SSG1to3_R) or SAS (SSG1to3_SAS) is a simple program to determine the response to selection in standardized units (R) after 1-stage selection with up to three seasons of testing, 2-stage selection with two seasons of testing, and 3-stage selection with three seasons of testing.

The required input SSG1to3_R and SSG1to3_SAS is identical and comprising a vector of 17 numbers; note in SSG1to3_R these numbers must be separated by a “,”


2019 SPHI Brief 42. The accelerated value chain development program: orange fleshed sweetpotato (OFSP) value chain in Kenya.

Through contract farming, about 160 tons of OFSP roots worth USD 22,400 were produced in 2018. Fresh orange-fleshed sweetpotato (OFSP) roots were introduced to both urban and local markets through traders’ orientation, free samples and cooking demonstrations . In 2018, farmers linked to the project supplied roots worth USD 11,760, doubling the quantity supplied in 2017 by Organi Limited farmers. Mean dietary diversity score for women of reproductive age and children 6-23 months of aged increased by 16.7% and 14.6%, respectively, between baseline and endline.

2019 SPHI Brief 41. Ghana’s KNUST: Equipping the next generation of sweetpotato change maker.

Kwame Nkrumah University of Science and Technology (KNUST) in collaboration with its partners is repositioning sweetpotato in Ghana’s food economy for health and wealth creation, making it an entrepreneurial hub in Africa. The capacities of participants of its annual Sweetpotato Training of Trainers (ToT) Course dubbed “Everything you need to know about sweetpotato” have been built for community impact and engagement. Four editions have been organized so far with participants from 16 different countries in Asia, America and Africa. Most of the participants have imparted the acquired skills and knowledge from the ToT course to farmers in their communities; a few have established sweetpotato businesses.

2019 SPHI Brief 40. Scaling Triple S PLUS with gender responsive tools and diverse scaling partners.

Triple S is currently being scaled in Ghana and Ethiopia by two scaling champions, using gender responsive tools and a scaling strategy developed with diverse partners. We used the theory of scaling and tools to support responsible scaling of the innovation as a package. The project is validating different gender responsive communications such as stepdown trainings using printed materials, video and radio in both countries. In 18 months, this initiative, in close collaboration with scaling partners was able to reach 57,655 farmers (66.5% women) in Ghana. In Ethiopia, the project has reached 9,958 farmers (25% women) through stepdown training, video and healthy living club training approaches. Scaling is a very complex process, requiring flexibility in establishing and building partnerships, and navigating unforeseen situations.

2019 SPHI Brief 39. Developing integrated value chains to enhance rural smallholders’ incomes and food (DIVERSIFY) project-Malawi.

The project has reached 3,000 households with Orange-fleshed Sweetpotato (OFSP) planting material, conducted value addition training and home-based food processing to 100 lead farmers who are continuously reaching other beneficiaries. Two processors (Mother Holdings Limited and Tehilah Food processing (Fig. 1)) are purchasing roots for making bread, crisps, buns and biscuits.

2019 SPHI Brief 37. Nutritious maize-OFSP porridge helps diversity diet in school feeding programme in Malawi.

To date, the Root and Tuber Crops (RTC)Action project (2016-2021) has reached 50,000 beneficiary households. This year it piloted introducing orange-fleshed sweetpotato (OFSP) into eight primary school feeding programs to expand its reach. Distributed OFSP vines to the schools involved in the home-grown school feeding program for production of roots of four varieties namely: Anaakwanire, Kadyaubwelere, Kaphulira, Mathuthu and Royal Choice Conducted three recipe demonstrations in all the schools targeting the food committee and School Health and Nutrition Teachers (SHNTs). Held meetings in the districts where the nutrition component of the project will be introduced to the District Nutrition Coordination Committees (DNCCs) and its integration to school feeding programs.

2019 SPHI Brief 35. Promoting OFSP for income, women’s empowerment, and nutrition: Lessons from Helen Keller International’s Programs in Burkina Faso, Nigeria and Sierra Leone.

The Healthy Lifestyle Project in Nigeria that started in January 2018 has worked to create awareness about the nutritional quality of Orange-fleshed Sweetpotato (OFSP), which has led to uptake of the crop among 4,882 students and their families in urban communities of Ikeja, Lagos State and school gardens established at nine schools (Fig. 1).

2019 SPHI Brief 34. Genomic tools for sweetpotato improvement project (GT4SP).

We developed genomic and genetic resources for sweetpotato improvement, including genome sequencing and annotation of two diploid relatives, to be used as reference genomes for cultivated sweetpotato. We developed a sequence-based single nucleotide polymorphism (SNP) genotyping platform, with supporting bioinformatics and analytical tools to facilitate marker-assisted breeding. We additionally developed a database for data storage, analysis and sharing. We carried out multi-location phenotyping of populations and marker-trait association, quantitative trait loci (QTL), and causal gene validation studies, as well as genomic selection trials. We enhanced capacity for genomic-assisted breeding in African sweetpotato research programs through workshops, webinars, short and long-term training opportunities

2019 SPHI Brief 33. Strengthening institutional systems for scaling up OFSP for improved nutrition and food security in Tigray and SNNPR, Ethiopia

From July 2017 to May 2019, a total of 8.45 million orange-fleshed sweetpotato (OFSP) cuttings (1,317,500 in Tigray and 7,131,220 in Southern Nations Nationalities and People Region (SNNPR)) were distributed. These directly reached 19,758 households (HHs): 5,348 HHs in Tigray and 14,410 HHs in SNNPR. In addition, continuous advocacy efforts by the International Potato Center (CIP) and other partners means that OFSP is now recognized as a key biofortified crop for addressing food insecurity and micronutrient malnutrition in Ethiopia. OFSP has been mainstreamed into national health and agriculture strategies and the government extension education package.

2019 SPHI Brief 32. Viable Sweetpotato Technologies in Africa (VISTA) Mozambique delivered orange-fleshed sweetpotato at Scale.

During the 5-year project period, 74,000 households (55% female-headed) received quality orange-fleshed sweetpotato (OFSP) planting material; 39% of them were able to sustain production of OFSP in subsequent seasons without receiving additional vines from the project. 162,000 households indirectly benefitted through farmer-to-farmer diffusion of planting material and agronomic and nutritional knowledge. 94,500 children under 5 years of age (24% of them under 2 years of age) were reached with nutrition messaging through their mothers. Between 2015 and 2018, the frequency of intake of vitamin A rich foods among children and women from intervention households increased from 3.9 to 4.9 days per week for children and from 3.0 to 5.0 days per week for women.

2019 SPHI Brief 31. Moving ahead with the nutritious sweetpotato in Inhambane, Mozambique.

From the lessons learned from previous activities in the Niassa province and recognizing that the agro-climatic conditions were completely different, the project started to implement field activities in a new province, Inhambane, on August 21, 2018. During the launch of the agricultural campaign for 2018-2019, the Inhambane government’s agricultural director appreciated the Nutritious Sweetpotato project and showed high support concerning the selected districts for implementing its activities utilizing the orangefleshed sweetpotato (OFSP). All economic activity technicians (SDAEs) were involved in the training process, which covered agronomic information as well as culinary demonstrations to improve the quality of the daily diet at the community level and raise OFSP demand.

2019 SPHI Brief 30. HARVESTPLUS enhancing on-farm access to vitamin A sweetpotato pathogen-tested planting material in Uganda: Strategies for sustainable adoption.

On-farm performance of sweetpotato pathogen-tested (PT) planting material has been reported giving over 80 percent yield increase, especially in sweet potato virus disease (SPVD) susceptible varieties. Inspection and certification guidelines to support the current Seeds and Plant Regulations (2017) have been revised to ensure quality control along the sweetpotato seed system. More seed entrepreneurs enlisted, regional seed associations formed and linked to private sector laboratories for technical guidance and sourcing of PT planting material .Partnerships for promoting biofortified crops in Uganda widened with cross linkages between ministries culminating into the formation of the National Biofortification Technical Working Group

2019 SPHI Brief 29. Scaling sweetpotato-led interventions to improve smallholders’ nutrition and food security in Tigray Region, Ethiopia.

1 million vines have been distributed to 1,072 households in Tigray region of Ethiopia. The capacity of extension service delivery partners (agriculture and health extension), model farmers, and women development team leaders for sustainable production of orange-fleshed sweetpotato (OFSP) was strengthened. Additionally, 457 trainers including extension officers, model farmers and other officials from the bureaus of health and agriculture were trained in various aspects on OFSP agronomy, post-harvest handling, processing, and marketing.