Sweet potato can contribute to both nutritional and food security in Timor-Leste

Rob Williams, F. Soares, L. Pereira, B. Belo, A. Soares, A. Setiawan, M. Browne, Harold Nesbitt, William Erskine

    Research output: Contribution to journal › Article

    7 Citations (Scopus)

    Abstract

    Calorie malnutrition is chronic in Timor-Leste, where vitamin A deficiency is also common. Sweet potato (Ipomoea batatas L. (Lam.)) is a staple in cropping in Timor-Leste, of particular importance in the diet as household cereal stocks dwindle. This study tested if promising on-station results of introduced sweet potato clones were validated on-farm under farmer management across a wide range of agro-ecologies over the 2006-2007 and 2007-2008 growing seasons using participatory varietal selection. Additionally, as the clones differed in tuberous root flesh colour we evaluated their β-carotene content and, hence, potential contribution to the alleviation of Vitamin A deficiency. In the 2006-2007 growing season three introduced clones (later released as Hohrae 1, 2 and 3) significantly out-performed the local by 29-45%, while in the next season the yields of these clones were more than double that of the local. Whereas only 29% of farmers gave positive comments about the local cultivar, 66-71% of farmers commented positively on the Hohrae clones. We assessed the β-carotene content of five introduced clones, only light orange-fleshed tuberous roots had detectable levels of β-carotene (802-1209μg 100g-1). It was concluded that 221gd-1 - slightly less than 1 cupd-1 - of Hohrae 3 with light orange fleshed roots will meet the requirement of an individual with Vitamin A deficiency in Timor-Leste. With an improved production potential combined with substantial β-carotene, the clone Hohrae 3 has the potential to contribute to both calorie and Vitamin A deficits in Timor-Leste. © 2013.
    Original languageEnglish
    Pages (from-to)38-43
    JournalField Crops Research
    Volume146
    DOIs
    Publication statusPublished - 2013

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    East Timor
    sweet potatoes
    food security
    potato
    clone
    clones
    carotenes
    vitamin
    vitamin A deficiency
    farmers
    growing season
    agroecology
    malnutrition
    Ipomoea batatas
    staples
    cereal
    vitamin A
    cropping practice
    cultivar
    households

    Cite this

    Williams, Rob ; Soares, F. ; Pereira, L. ; Belo, B. ; Soares, A. ; Setiawan, A. ; Browne, M. ; Nesbitt, Harold ; Erskine, William. / Sweet potato can contribute to both nutritional and food security in Timor-Leste. In: Field Crops Research. 2013 ; Vol. 146. pp. 38-43.
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    abstract = "Calorie malnutrition is chronic in Timor-Leste, where vitamin A deficiency is also common. Sweet potato (Ipomoea batatas L. (Lam.)) is a staple in cropping in Timor-Leste, of particular importance in the diet as household cereal stocks dwindle. This study tested if promising on-station results of introduced sweet potato clones were validated on-farm under farmer management across a wide range of agro-ecologies over the 2006-2007 and 2007-2008 growing seasons using participatory varietal selection. Additionally, as the clones differed in tuberous root flesh colour we evaluated their β-carotene content and, hence, potential contribution to the alleviation of Vitamin A deficiency. In the 2006-2007 growing season three introduced clones (later released as Hohrae 1, 2 and 3) significantly out-performed the local by 29-45{\%}, while in the next season the yields of these clones were more than double that of the local. Whereas only 29{\%} of farmers gave positive comments about the local cultivar, 66-71{\%} of farmers commented positively on the Hohrae clones. We assessed the β-carotene content of five introduced clones, only light orange-fleshed tuberous roots had detectable levels of β-carotene (802-1209μg 100g-1). It was concluded that 221gd-1 - slightly less than 1 cupd-1 - of Hohrae 3 with light orange fleshed roots will meet the requirement of an individual with Vitamin A deficiency in Timor-Leste. With an improved production potential combined with substantial β-carotene, the clone Hohrae 3 has the potential to contribute to both calorie and Vitamin A deficits in Timor-Leste. {\circledC} 2013.",
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    Williams, R, Soares, F, Pereira, L, Belo, B, Soares, A, Setiawan, A, Browne, M, Nesbitt, H & Erskine, W 2013, 'Sweet potato can contribute to both nutritional and food security in Timor-Leste' Field Crops Research, vol. 146, pp. 38-43. https://doi.org/10.1016/j.fcr.2013.03.009

    Sweet potato can contribute to both nutritional and food security in Timor-Leste. / Williams, Rob; Soares, F.; Pereira, L.; Belo, B.; Soares, A.; Setiawan, A.; Browne, M.; Nesbitt, Harold; Erskine, William.

    In: Field Crops Research, Vol. 146, 2013, p. 38-43.

    Research output: Contribution to journal › Article

    TY - JOUR

    T1 - Sweet potato can contribute to both nutritional and food security in Timor-Leste

    AU - Williams, Rob

    AU - Soares, F.

    AU - Pereira, L.

    AU - Belo, B.

    AU - Soares, A.

    AU - Setiawan, A.

    AU - Browne, M.

    AU - Nesbitt, Harold

    AU - Erskine, William

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    N2 - Calorie malnutrition is chronic in Timor-Leste, where vitamin A deficiency is also common. Sweet potato (Ipomoea batatas L. (Lam.)) is a staple in cropping in Timor-Leste, of particular importance in the diet as household cereal stocks dwindle. This study tested if promising on-station results of introduced sweet potato clones were validated on-farm under farmer management across a wide range of agro-ecologies over the 2006-2007 and 2007-2008 growing seasons using participatory varietal selection. Additionally, as the clones differed in tuberous root flesh colour we evaluated their β-carotene content and, hence, potential contribution to the alleviation of Vitamin A deficiency. In the 2006-2007 growing season three introduced clones (later released as Hohrae 1, 2 and 3) significantly out-performed the local by 29-45%, while in the next season the yields of these clones were more than double that of the local. Whereas only 29% of farmers gave positive comments about the local cultivar, 66-71% of farmers commented positively on the Hohrae clones. We assessed the β-carotene content of five introduced clones, only light orange-fleshed tuberous roots had detectable levels of β-carotene (802-1209μg 100g-1). It was concluded that 221gd-1 - slightly less than 1 cupd-1 - of Hohrae 3 with light orange fleshed roots will meet the requirement of an individual with Vitamin A deficiency in Timor-Leste. With an improved production potential combined with substantial β-carotene, the clone Hohrae 3 has the potential to contribute to both calorie and Vitamin A deficits in Timor-Leste. © 2013.

    AB - Calorie malnutrition is chronic in Timor-Leste, where vitamin A deficiency is also common. Sweet potato (Ipomoea batatas L. (Lam.)) is a staple in cropping in Timor-Leste, of particular importance in the diet as household cereal stocks dwindle. This study tested if promising on-station results of introduced sweet potato clones were validated on-farm under farmer management across a wide range of agro-ecologies over the 2006-2007 and 2007-2008 growing seasons using participatory varietal selection. Additionally, as the clones differed in tuberous root flesh colour we evaluated their β-carotene content and, hence, potential contribution to the alleviation of Vitamin A deficiency. In the 2006-2007 growing season three introduced clones (later released as Hohrae 1, 2 and 3) significantly out-performed the local by 29-45%, while in the next season the yields of these clones were more than double that of the local. Whereas only 29% of farmers gave positive comments about the local cultivar, 66-71% of farmers commented positively on the Hohrae clones. We assessed the β-carotene content of five introduced clones, only light orange-fleshed tuberous roots had detectable levels of β-carotene (802-1209μg 100g-1). It was concluded that 221gd-1 - slightly less than 1 cupd-1 - of Hohrae 3 with light orange fleshed roots will meet the requirement of an individual with Vitamin A deficiency in Timor-Leste. With an improved production potential combined with substantial β-carotene, the clone Hohrae 3 has the potential to contribute to both calorie and Vitamin A deficits in Timor-Leste. © 2013.

    U2 - 10.1016/j.fcr.2013.03.009

    DO - 10.1016/j.fcr.2013.03.009

    M3 - Article

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    JO - Field Crop Research

    JF - Field Crop Research

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    Williams R, Soares F, Pereira L, Belo B, Soares A, Setiawan A et al. Sweet potato can contribute to both nutritional and food security in Timor-Leste. Field Crops Research. 2013;146:38-43. https://doi.org/10.1016/j.fcr.2013.03.009

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