Block 1 Poster 4 Triple S Storing Sweetpotato Roots in ... · Block 1 Poster 4 Triple S ... and...
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Block 1 Poster 4 Triple S – Storing Sweetpotato Roots in Sand and Sprouting Poster authors: Sam Namanda (CIP-Uganda); Mhiretu Cherinet (CIP-Ethiopia); Sammy Agili (CIP-Kenya); Margaret McEwan (CIP-SSA); Robert Mwanga (CIP-Uganda); Sylvia Magezi (HarvestPlus Uganda). Contact: [email protected] TECHNOLOGY DESCRIPTION Triple S refers to Storing sweetpotato roots in Sand and Sprouting to initiate development and growth of healthy shoots for timely production of clean planting material. • Based on existing farmer practice, it is targeted for areas where a long dry season makes it difficult for farmers to conserve planting material. Small to medium pest free, mature roots are selected, cured under open shade, and then placed in containers layered with coarse sand. The containers are stored in a cool house for up to seven months. The stored roots are checked every two months, for rotting and de-sprouting as necessary. • Six weeks before rains are expected, the sprouted roots are then planted at a spacing of 0.6m x 0.6m in seed beds, and watered twice a week. Watering is withdrawn for vine hardening two weeks prior to harvesting 30 cm cuttings to plant for storage root production. END USERS AND BENEFITS • Sweetpotato root producers are the end users. 40 small-medium size roots can produce an estimated 12,000 cuttings harvested thrice at an interval of four weeks. This is enough to plant 100 x 36 m 2 . • The use of a root based system, limits exposure to insect vectors, and need for irrigation, through a long dry season. • Timely access to quality planting material, ensures early planting and early food to reduce the hunger period. SCALING STRATEGY • Initial sensitization, testing and comparison with existing practices is undertaken in different countries and agro-ecologies. The scaling strategy is context specific. • A Training of Trainers approach is used in western Kenya, to cascade the technology to farmer groups. • In Uganda, farmers record their testimonies to share through village meetings, events and radio shows. • In-service training courses already include Triple S in the curricula. LEVEL OF ADOPTION OR USE Triple S has been tested and adapted in Tanzania, northern Uganda, and southern Ethiopia, with dry seasons of 3-5months; western Kenya, with a 5-7 month dry season; and Tigray, Ethiopia with a dry season of 7-9 months. Technical follow up and learning takes place, through the Seed Systems community of practice and WhatsApp groups. CRITICAL GAPS AND NEXT STEPS • We continue to develop science based evidence for different elements in the technology. • We are finalizing ToT resources and communication. materials (durable flip charts for demonstration and FAQs); and identifying appropriate mass communication channels. • We seek expertise and partners for preparation of a cost effective scaling strategy, e.g. using primary schools as entry points. KEY PARTNERS FOR SCALING Local government decision makers & extension providers: investment and trainers NGOs: World Vision International (U): community mobilization Sweetpotato Seed Systems and Crop Management Community of Practice: technical backstopping and exchange of experiences across SSA. Country Status 2016: No. districts Current No. HH HH by 2020 Uganda Scaling 5 1,500 5,000 Ethiopia Testing 6 43 tbc Mozambique Scaling 6 (23 sites) 134 960 Mozambique Scaling 4 (10 sites) 77 Tanzania Test & scale 7 120 Kenya Test & scale 3 400 1610 Nigeria Test & scale 14 62 160 Malawi Planned tbc tbc tbc Ghana Test & scale 6 178 Burkina Faso Planned 3 tbc 100 Roots of Kulfo produce pink sprouts, 3-5 months after storage in sand. Mirababaya, SNNPR, Ethiopia Credit: M. Cherinet Validating the technology with farmer groups, Gem, Siaya County, Kenya Credit: S. Agili Triple S Volunteer field sprouts Parameter Acaye Minakulu Average Acaye Minakulu Average Total # of cuttings/15 roots 596 290 443 44 8 52 # of bundles* 9 4 7 0 0 0 Unit sales price ( UgSh .) 500 500 500 500 500 500 Gross sales ( UgSh .) 4,500 2,000 3,500 0 0 0 Table 1: Gross benefits gained from Triple S compared to volunteer sprouts from previous crop in Gulu and Oyam districts, N. Uganda Table 2: Status of Triple S testing and scaling in SSA. December 2016 *65 cuttings/bundle: the average number of cuttings for UGSH 500 at open vine market in Gulu. Source: S. Namanda
Transcript of Block 1 Poster 4 Triple S Storing Sweetpotato Roots in ... · Block 1 Poster 4 Triple S ... and...
Block 1 Poster 4
Triple S – Storing Sweetpotato Roots in Sand and Sprouting
Poster authors: Sam Namanda (CIP-Uganda); Mhiretu Cherinet (CIP-Ethiopia); Sammy Agili (CIP-Kenya); Margaret McEwan (CIP-SSA); Robert Mwanga (CIP-Uganda); Sylvia Magezi (HarvestPlus Uganda). Contact: [email protected]
TECHNOLOGY DESCRIPTIONTriple S refers to Storing sweetpotato roots in Sand and Sprouting to initiate development and growth of healthy shoots for timely production of clean planting material. • Based on existing farmer practice, it is targeted for areas where a
long dry season makes it difficult for farmers to conserve planting material. Small to medium pest free, mature roots are selected, cured under open shade, and then placed in containers layered with coarse sand. The containers are stored in a cool house for up to seven months. The stored roots are checked every two months, for rotting and de-sprouting as necessary.
• Six weeks before rains are expected, the sprouted roots are then planted at a spacing of 0.6m x 0.6m in seed beds, and watered twice a week. Watering is withdrawn for vine hardening two weeks prior to harvesting 30 cm cuttings to plant for storage root production.
END USERS AND BENEFITS• Sweetpotato root producers are the end users. 40 small-medium
size roots can produce an estimated 12,000 cuttings harvested thrice at an interval of four weeks. This is enough to plant 100 x 36 m2 .
• The use of a root based system, limits exposure to insect vectors, and need for irrigation, through a long dry season.
• Timely access to quality planting material, ensures early planting and early food to reduce the hunger period.
SCALING STRATEGY• Initial sensitization, testing and comparison with existing practices is
undertaken in different countries and agro-ecologies. The scaling strategy is context specific.
• A Training of Trainers approach is used in western Kenya, to cascade the technology to farmer groups.
• In Uganda, farmers record their testimonies to share through village meetings, events and radio shows.
• In-service training courses already include Triple S in the curricula.
LEVEL OF ADOPTION OR USETriple S has been tested and adapted in Tanzania, northern Uganda, and southern Ethiopia, with dry seasons of 3-5months; western Kenya, with a 5-7 month dry season; and Tigray, Ethiopia with a dry season of 7-9 months. Technical follow up and learning takes place, through the Seed Systems community of practice and WhatsApp groups.
CRITICAL GAPS AND NEXT STEPS• We continue to develop science based evidence for different
elements in the technology.
• We are finalizing ToT resources and communication. materials
(durable flip charts for demonstration and FAQs); and identifying
appropriate mass communication channels.
• We seek expertise and partners for preparation of a cost effective
scaling strategy, e.g. using primary schools as entry points.
KEY PARTNERS FOR SCALINGLocal government decision makers & extension providers:
investment and trainers
NGOs: World Vision International (U): community mobilization
Sweetpotato Seed Systems and Crop Management Community
of Practice: technical backstopping and exchange of
experiences across SSA.
Country Status 2016: No. districts
CurrentNo. HH
HH by 2020
Uganda Scaling 5 1,500 5,000
Ethiopia Testing 6 43 tbc
Mozambique Scaling 6 (23 sites) 134 960
Mozambique Scaling 4 (10 sites) 77
Tanzania Test & scale 7 120
Kenya Test & scale 3 400 1610
Nigeria Test & scale 14 62 160
Malawi Planned tbc tbc tbc
Ghana Test & scale 6 178
Burkina Faso Planned 3 tbc 100
Roots of Kulfoproduce pink sprouts, 3-5 months after storage in sand. Mirababaya, SNNPR, Ethiopia Credit: M. Cherinet
Validating the technology with
farmer groups, Gem, Siaya
County, Kenya Credit: S. Agili
Triple S Volunteer field sprouts
Parameter Acaye Minakulu Average Acaye Minakulu Average
Total # of
cuttings/15 roots
596 290 443 44 8 52
# of bundles* 9 4 7 0 0 0Unit sales price
(UgSh.)
500 500 500 500 500 500
Gross sales
(UgSh.)
4,500 2,000 3,500 0 0 0
Table 1: Gross benefits gained from Triple S compared to volunteer sproutsfrom previous crop in Gulu and Oyam districts, N. Uganda
Table 2: Status of Triple S testing and scaling in SSA. December 2016
*65 cuttings/bundle: the average number of cuttings for UGSH 500 at open vine market in Gulu. Source: S. Namanda
