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Presentation 6C – Handout: Can Agricultural Technology Diffusion be Harnessed to Reduce Malnutrition? Experimental Evidence from Uganda

Author: Daniel O. Gilligan June 13, 2017

This study uses a randomized saturation experiment and influential technology promoters to test strategies to promote diffusion of two highly nutritious agricultural crop technologies in Uganda to measure which approaches are most cost-effective at achieving high adoption rates. The crops are conventionally bred varieties of vitamin-A-rich orange sweet potato (OSP) …
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Sweetpotato Agronomy Research in Ethiopia: Summary of Past Findings and Future Research Directions

Author: Daniel Markos, Gobeze Loha April 20, 2016

Sweet potato (Ipomoea batatas (L.) Lam) is economically important food crop in Ethiopia. Since its introduction, numerous agronomic research activities were carried out in agricultural research centers, non-governmental organizations and universities. The objective of this piece of work is to document available research findings in a usable manner and present …
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Participatory selection of orange-fleshed sweetpotato varieties in north and north-east Côte d’Ivoire

Author: DIBI Konan Evrard Brice, Brice Sidoine Essis et al. February 15, 2017

Sweetpotato is cultivated in all the regions of Côte d’Ivoire for consumption and as a source of income. Only varieties with white or yellow flesh are grown. Production of nutritious orange-fleshed sweetpotato (OFSP) is hampered by the lack of genetic resources and planting material. To evaluate and release OFSP varieties, …
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From lab to life: Making storable orange-fleshed sweetpotato purée a commercial reality

Author: Temesgen Fitamo Bocher, Jan W. Low et al. 2017

Research in Rwanda demonstrated that orange-fleshed sweetpotato (OFSP) purée (steamed, mashed roots) was an economically viable, vitamin A enhancing ingredient in baked products when the purée was produced and used in the same bakery. Having a storable, packaged OFSP purée produced by a firm to supply bakers is an alternative …
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Survival of sweetpotato (Ipomoea batatas [L] Lam) vines in cultivars subjected to long dry spells after the growing season in Mozambique

Author: , Godwill Makunde et al. 2017

Optimisation of sweetpotato production potential is not realized in sub-Saharan Africa where dry spells are common after the growing season. Lack of seed cultivars at the beginning of the rainy season is the challenge and identifying those cultivars with the ability to survive a 4 to 7-month dry spell is …
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FINGERPRINTING OF SWEETPOTATO GERMPLASM USING AFLP, RAPD, AND SAMPL ANALYSIS

Author: Amina A. Mohamed, Mervat Ahmed et al. 2017

The ability to improve productivity and agronomic traits of sweetpotato through breeding programs depends on assessing the genetic variation of their germplasm and genetic relationship to other genotypes. In addition, studying genetic diversity supports the conservation of genetic resources. In this study, three different DNA-based markers, random amplification of polymorphic …
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Specialised Sweetpotato Vine Multiplication in Lake Zone, Tanzania: What “Sticks” and What Changes?

Author: Margaret McEwan, Dorothy Lusheshanija et al. 2017

In Lake Zone, Tanzania, farmers were trained to multiply and distribute quality sweetpotato planting material. The objectives of this study were to assess changes in skills and practices among the trained farmers as vine multiplication became a specialized task. Nine months after the project ended, all 88 decentralized vine multipliers …
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Drought effects on root and tuber production: A meta-analysis

Author: Stefani Daryanto, Lixin Wang et al. 2016

Roots and tubers such as potatoes and cassava rank within the top six among the world’s most important food crops, yet the extent to which their global production has been adversely affected by drought remains unclear. Greater uncertainties exist on how drought effects co-vary with: (1) root and tuber species, …
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Development of End-User Preferred Sweetpotato Varieties

Author: Ernest Baafi, Joe Manu-Aduening et al. January 15, 2016

The objective of this study was to develop end-user preferred sweetpotato varieties using a diallel mating scheme and to estimate the level of heterosis and heterobeltiosis.  using a diallel mating scheme and to estimate the level of heterosis and heterobeltiosis among F1 hybrids obtained from a diallel between low sugar sweetpotato genotypes.   Sweetpotato …
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