Five potential and financially viable business models were examined for OFSP value-added products in the Kenyan context. These potential OFSP value-added products are cookies, cupcakes and mandazi (donuts), and OFSP purée for bakery products. However, …
Category Research Briefs 2019 SASHA Brief 22, Business enterprises, Orange-fleshed sweetpotato products
Published in 2019 by Tawanda Muzhingi, Antonio Magnaghi
Orange-fleshed sweetpotato (OFSP) purée can be used to substitute wheat flour by 25-60% depending on the product, without affecting the quality of baking procedures. We developed a safe, vacuum-packed shelf-stable purée that lasts 3 months without refr …
Published in 2019 by Maria Andrade, Godwill Makunde, Bill Annetts
Design, installation and testing of a solar-powered storage facility (Fig.1) was conducted over four months in Marracuene, Mozambique using fresh roots of four varieties. The percentage of marketable root weight was above 70% of the initial weight at f …
Category Research Briefs 2019 SASHA Brief 20, Mozambique, Solar powered storage
Published in 2019 by Tanya Stathers, Marcelo Precoppe, Andrew Marchant, Debbie Rees, Bethwell Kipkoech, Benard Otieno, Jan Low
Two evaporatively cooled stores (Fig.1) with the capacity to each hold 5 tonnes of sweetpotato roots were constructed in Kenya, one run on mains power and the other on solar. Using the evaporative cooling system temperatures of 20-23°C were achieved an …
Extensive testing of LAMP (Loop Mediated Isothermal Amplification) has shown a high sensitivity and specificity in detecting sweet potato feathery mottle virus (SPFMV), sweet potato chlorotic stunt virus (SPCSV), and begomoviruses comparable to using q …
Begomoviruses have progressively been reported to be infecting sweetpotatoes throughout the world. Despite showing few symptoms, limited studies have reported them to have a varying but significant impact on root quality and yield. A cultivar with mode …
Category Research Briefs 2019 SASHA Brief 17, begomoviruses, production, sub-Saharan Africa
Nine consultations were held from April 2015 to May 2019, with participation from diverse actors in the seed system i.e. researchers from CIP and NARIs, NGOs implementing sweetpotato projects, regulators, seed producers and farmers. Participants say th …
Category Research Briefs 2019 SASHA Brief 16, Community of practice, seed system
Published in 2019 by 109, Christine Okoye, Shehu Usman Yahaya, Ishiak Khalid, Adeola Sunday Olayiwola
Strengthened the capacity of national partners (National Root Crops Research Institute (NRCRI) and Bayero University(BUK)) to produce and manage high quality planting material of breeder, pre-basic and basic seeds: 21 net tunnels, three screen houses, …
Category Research Briefs 2019 SASHA Brief 15, Nigeria, Pre-basic seed production
In the Lake Zone, Tanzania, between 2009-2012, 88 decentralized vine multipliers (DVMs) were established by the Marando Bora project. Five years later, the follow up study traced 81 of the DVMs. 40% of the DVMs had sold planting material of Marando Bor …
Category Research Briefs 2019 SASHA Brief 14, Tanzania, Vine multiplication
CIP conducted a financial feasibility study for a private seed company engaged in early generation seed (EGS) production for root, tuber and banana crops. The study showed that the business is financially viable in the long-run based on the existing bu …
Category Research Briefs 2019 SASHA Brief 13, East Africa, Seed production
A user-friendly tool to estimate the requirements for Early Generation Sweetpotato Seed (EGS) is now available for use by public sector seed producers. The method was first used in Uganda to estimate the seed requirement by root producers for quality s …
Category Research Briefs 2019 SASHA Brief 12, Seed requirement estimation
Published in 2019 by 294, Everina Lukonge , Srinivasulu Rajendran , Margaret McEwan
A study was conducted to understand the economic sustainability of basic seed enterprises to bridge the gap between pre-basic seed producers and decentralized vine multipliers. Four commercial seed multipliers were supported on a 2:3 (multiplier: CIP) …
Category Research Briefs Research brief, SPHI 2019, Seed production
Published in 2019 by Sam Namanda , Srinivasulu Rajendran, Joseph Kasekende
Two methods of protected vine conservation beds (insect protected net tunnel (Fig. 1) and miniscreenhouse (Fig. 2)) were compared with an open field control to assess cost effectiveness for quality seed production and subsequent root production. Mean p …
Affordable insect-proof net tunnels proved effective in reducing virus-related degeneration in sweetpotato in Tanzania. Re-infection in high virus pressure area was prevented for up to 20 months and 18 months for Polista and Kabode varieties, respectiv …
Category Research Briefs Insect-proof net tunnel, Research brief, Seed degeneration
Published in 2019 by 765, Phabian Makokha, 27, Kennedy Masamba
A nutrient media for multiplying pre-basic sweetpotato vines under a sandponics system was optimized. The vine multiplication rate for pre-basic seed multiplication increased by 22% using sandponics. The cost of producing a 3-node cutting has been redu …
Category Research Briefs Sandponics system, Seed production, Vineyards
Published in 2019 by Jolien Swanckaert, 5, Benjamin Kivuva
The Sweetpotato Digital Catalogue (Fig. 1) presents a collection of the best performing sweetpotato varieties or “best bets” in Africa. Standardized information of 80 varieties in use in15 Sub-Saharan Africa (SSA) countries can be found at www.sweetpot …
Category Research Briefs Research brief, Sweetpotato digital catalogue
Published in 2019 by Astere Bararyenya , Phinehas Tukamuhabwa , 12, Yao Nasser
Research conducted on diverse sweetpotato germplasm showed that some genotypes form their roots at the same time, that are of the same maturity (discontinuous storage root formation and bulking) and other continue to form roots over time (continuous ro …
Published in 2019 by Reuben Ssali, Daniel Akansake , 101, Eric Kuuna Dery, 6
A trained sensory panel was developed to assist with breeding for sweetpotato quality preferences of consumers in West Africa. Lexicons of terms to precisely describe boiled and fried sweetpotato sensory quality have been developed using trained sensor …
Successful second round of accelerated breeding completed, with the release of 4 orange-fleshed (OFSP) and 3 purple-fleshed (PFSP) drought tolerant sweetpotato varieties in 2016. Third round will be completed in 2019. Early season and terminal drought …
Determine the response to selection for yield and quality in three applied breeding populations for a complete reciprocal recurrent selection cycle for (i) OFSP wide adaptation and earliness, (ii) OFSP for high iron, and (iii) OFSP for low sweetness af …
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