Orange-fleshed Sweetpotato for Africa: Catalogue 2014

Tumwegamire, Silver; Mwanga, R.O.M.; Andrade, Marcelo Luiz de; Low, Jan; Ssemakula, G.; Laurie, S. M.; Chipungu, Felistus; Nidirigue, J.; Agili, S.; Karanja, L. S.; Chiona, Martin; Njoku, J. C.; Mtunda, N.; Ricardo, J.; Adofo, Kwadwo; Carey, T.; Grüneberg, Wolfgang J.

doi:10.4160/9789290604396

Cited by 19 publications

(20 citation statements)

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“…The higher LAI values were a result of the collective sum of leaf coverage of the two crops (sweetpotato and maize). The higher LAI observed in Ejumula-maize intercrops than NASPOT 9 O-maize intercrops, confirms that Ejumula is genetically more vegetative than NASPOT 9 O, an observation previously made by Mwanga et al, 2007; and Tumwegamire et al (2014).…”

Section: Discussionsupporting

confidence: 76%

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Effect of maize intercrop plant densities on yield and β-carotene contents of orange-fleshed sweetpotatoes

Asiimwe¹,

Tabu²,

Lemaga³

et al. 2016

Afr. Crop Sci. J.

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Section: Discussionsupporting

confidence: 76%

“…The higher HI in NASPOT 9 O compared to Ejumula is associated with the high root yielding potential of the former than the latter (Tumwegamire et al, 2014). As noted earlier, Ejumula has more vegetation, which probably disadvantages its root yield potential.…”

Section: Discussionmentioning

confidence: 53%

Effect of maize intercrop plant densities on yield and β-carotene contents of orange-fleshed sweetpotatoes

Asiimwe¹,

Tabu²,

Lemaga³

et al. 2016

Afr. Crop Sci. J.

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“…Finally, SSA breeding efforts have been linked to the sweet potato genomic tools project that began in 2014. Since 2009, this SASHA-AGRA-NARS collaboration has resulted in 11 countries in East, Southern and West Africa releasing 56 varieties, of which 40 are orange-fleshed [25]. Storage potato root yield gains per year were 1.2% between 1992 and 2012 in Africa, compared to 2.1%, 1.4%, and 0.5% in USA, West Pacific, and South Asia, respectively [24].…”

Section: Breeding Progressmentioning

confidence: 99%

Sweet potato development and delivery in sub-Saharan Africa

Low¹,

Ball²,

Magezi³

et al. 2017

AJFAND

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In sub-Saharan Africa, more than 40% of children under five years of age suffer from vitamin A deficiency. Among several interventions in place to address vitamin A deficiency is biofortification, breeding vitamin A into key staple crops. Staple crops biofortified with beta-carotene, the precursor to vitamin A, are orange in color. Given the natural occurrence of high levels of beta-carotene in many sweet potato varieties, breeding progress for biofortified orange sweet potato (OSP) has been much faster than for the other vitamin A enhanced staples. Nearly 3 million households have been reached with OSP. This paper reviews key factors influencing the uptake of OSP, the breeding investment, five key delivery approaches that have been tested in the region and efforts to broaden government and other stakeholder engagement.

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“…The substrate type was a whole plot factor while each variety was a sub-plot factor. Genotypes Irene, Kabode, Ejumula, and Gweri were used in the study selected based on their growth morphology as erect, semi-erect, spreading and extremely spreading, respectively (Huamán 1991;Tumwegamire et al 2014).…”

Section: Methodsmentioning

confidence: 99%

Comparative analysis for producing sweetpotato pre-basic seed using sandponics and conventional systems

Makokha

Ssali

Rajendran

et al. 2019

Journal of Crop Improvement

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In Sub-Saharan Africa, sweetpotato pre-basic seed is multiplied in screenhouses using a sterilized soil substrate. This is expensive and unsustainable. The use of sand substrate with a fertigation system ("sandponics"), is an alternative. The study compared the cost-effectiveness for pre-basic seed production using the sandponics system to the conventional soil substrate for four genotypes. A randomized complete block split plot design was used, and data collected on vine traits over six harvests. Real-time cost data were collected for costeffectiveness analysis. Results showed a highly significant (p < .0001) 21.8% increase in the vine multiplication rate under the sandponics system. The cost of producing one sweetpotato node in sandponics was significantly lower by 0.009 US$. The cost-effectiveness of producing pre-basic seed in sandponics varied among the genotypes. The future use of sandponics is discussed with respect to the availability of soluble inorganic fertilizers, varietal specific response to nutrients, and labor implications.

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Orange-fleshed Sweetpotato for Africa: Catalogue 2014

Cited by 19 publications

References 0 publications

Effect of maize intercrop plant densities on yield and β-carotene contents of orange-fleshed sweetpotatoes

Effect of maize intercrop plant densities on yield and β-carotene contents of orange-fleshed sweetpotatoes

Sweet potato development and delivery in sub-Saharan Africa

Comparative analysis for producing sweetpotato pre-basic seed using sandponics and conventional systems

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