Logo
TAAT e-catalog for government
https://e-catalogs.taat-africa.org/gov/technologies/sre-seed-requirement-estimation-tool-for-sweetpotato
Request information View pitch brochure

SRE: Seed Requirement Estimation Tool for Sweetpotato

Optimize Seed Supply with SRE!

The SRE Tool is a web-based application that projects national demand for Quality Declared Seed (QDS) and back-calculates Early Generation Seed (EGS) needs for sweetpotato, cassava, and yam using adoption rates, seed replacement cycles, and farmer purchase behavior. Outputs include national-level demand benchmarks and downloadable Excel reports, enabling policymakers to align resources, plan production strategies, and strengthen seed system resilience.

This technology is pre-validated.

9•7

Scaling readiness: idea maturity 9/9; level of use 7/9

Adults 18 and over: Positive high

Farmers and Household Heads: Adults benefit directly from more reliable access to quality seed, which reduces yield losses from diseases (up to 60% in sweetpotato) and increases production. This translates into higher household income, improved food security, and stronger resilience against shocks such as drought or price fluctuations. Commercial Seed Producers and Entrepreneurs: For adult seed producers and farmer-led enterprises, the SRE Tool reduces the risks of oversupply or undersupply by aligning production with actual demand. This improves return on investment (ROI up to 400%), reduces financial losses, and creates opportunities for expansion into new markets. Adult Women in Agriculture: Women, who often manage household food production and small seed businesses, gain from the tool’s demand-driven planning. It reduces uncertainty, makes it easier to secure credit or contracts, and ensures timely supply of planting material that supports both family nutrition and income. Adult Men in Agriculture: Men often dominate larger-scale seed enterprises and public-sector seed production. For them, the tool strengthens decision-making with data-driven projections, helping optimize resource allocation (land, labor, capital) and improving competitiveness in formal seed markets. Policymakers, NGO Staff, and Extension Workers: Adults working in these roles use the tool to plan national seed requirements, guide resource allocation, and support vulnerable farming communities. This helps them design targeted interventions, reduce waste, and ensure timely access to seed in both development and humanitarian programs.

The poor: Positive high

Access to Affordable Seed: Poor farming households often struggle to access improved planting materials due to high costs or shortages in local markets. The SRE Tool helps reduce this problem by improving seed forecasting and ensuring timely availability of Quality Declared Seed (QDS). This lowers the risk that poor farmers are forced to use low-quality, disease-infected vines, which can cut yields by up to 60% in sweetpotato. Lower Risk of Losses: For poor seed producers or smallholder multipliers with limited capital, overproducing unsold seed can be devastating. The SRE Tool minimizes this risk by aligning production with demand, ensuring that their scarce resources are used efficiently. Improved Food Security: By supporting more reliable access to quality seed, poor farmers can achieve higher and more stable yields of staple crops like cassava, yam, and sweetpotato—directly improving household food supply and reducing hunger. Economic Empowerment: When poor households have access to improved seed and better planning, they can generate surplus harvests for sale, improving cash income. Over time, this helps them invest in schooling, healthcare, and livelihood improvements, breaking cycles of poverty. Support Through Public and NGO Programs: Policymakers, NGOs, and humanitarian organizations can also use the SRE Tool to plan seed interventions that specifically target poor and vulnerable groups, ensuring that resources reach those who need them most. In short: The SRE Tool reduces vulnerability, increases productivity, and improves opportunities for poor farmers and seed producers, making them less exposed to shocks and helping them climb out of poverty.

Under 18: Positive medium

Impact on children and youth in farming households: By improving access to quality seed and boosting productivity, the SRE Tool indirectly supports household food security and income. This reduces the likelihood of children experiencing hunger or malnutrition, and it increases the chances that households can afford school fees, health care, and other essentials. Opportunities for youth in agribusiness: The tool reduces risk and clarifies market opportunities, creating safer entry points for young entrepreneurs under 18 (e.g., youth groups or school-based agribusiness clubs) to engage in small-scale seed multiplication or distribution. With proper mentorship, this empowers young people to see agriculture as a viable pathway. Long-term inclusion: By stabilizing seed supply and reducing shocks in farming households, children grow up in more resilient communities with better opportunities for education and skill development. In the long term, this contributes to breaking the cycle of poverty across generations.

Women: Positive medium

Adult Women in Agriculture: Women, who often manage household food production and small seed businesses, gain from the tool’s demand-driven planning. It reduces uncertainty, makes it easier to secure credit or contracts, and ensures timely supply of planting material that supports both family nutrition and income.

Climate adaptability: Moderately adaptable

The SRE Tool works well across diverse climates because it does not prescribe fixed assumptions—it allows users to adjust parameters to match local weather conditions and cropping systems, ensuring accurate projections in different environments.

Farmer climate change readiness: Moderate improvement

The SRE Tool strengthens farmer readiness for climate change by improving planning, reducing vulnerability to seed shortages, optimizing resource use, and ensuring access to resilient varieties that support adaptation and recovery.

Problem

  • Mismatch between policy targets and supply realities: Uganda projected 228,000 bags of sweetpotato QDS for 2026 but current supply can only meet 9.6%.
  • Poor data visibility for planning: Lack of accurate adoption and replacement cycle data undermines national strategies.
  • Underproduction limits impact of improved varieties: Farmers face shortages, reducing productivity and food security.

Solution

  • Evidence-based decision support: National-level demand projections guide allocation of resources and subsidies.
  • Efficient public investment: Reduces wastage from oversupply and ensures financial support goes where gaps exist.
  • Strengthened resilience: Helps governments build robust, climate-resilient seed systems that deliver improved varieties to farmers consistently

Key points to design your project

To successfully integrate the SRE Tool into national programs or policies, government decision-makers need to understand how it improves seed system planning, strengthens supply chains, and supports efficient resource allocation. The following points highlight what to consider for effective adoption and oversight:

  • Integrate the SRE Tool into national seed programs, agricultural development plans, and research initiatives.
  • Ensure staff and officers have access to the web-based tool or Excel version for offline analysis.
  • Allocate one account per officer managing seed planning portfolios; scale as needed for larger teams.
  • Collaborate with extension services, local agriculture offices, research institutes, and technical partners to ensure accurate data and adoption of outputs.
  • Budget for staff training, IT support, and ongoing guidance; the SRE Tool itself is free to use.
  • Train staff to guide planners, interpret outputs, and incorporate results into policy, investment decisions, and national production strategies.

IP

Unknown

Scaling Readiness describes how complete a technology’s development is and its ability to be scaled. It produces a score that measures a technology’s readiness along two axes: the level of maturity of the idea itself, and the level to which the technology has been used so far.

Each axis goes from 0 to 9 where 9 is the “ready-to-scale” status. For each technology profile in the e-catalogs we have documented the scaling readiness status from evidence given by the technology providers. The e-catalogs only showcase technologies for which the scaling readiness score is at least 8 for maturity of the idea and 7 for the level of use.

The graph below represents visually the scaling readiness status for this technology, you can see the label of each level by hovering your mouse cursor on the number.

Read more about scaling readiness ›

Scaling readiness score of this technology

Maturity of the idea 9 out of 9

Uncontrolled environment: validated

Level of use 7 out of 9

Common use by projects NOT connected to technology provider

Maturity of the idea Level of use
9
8
7
6
5
4
3
2
1
1 2 3 4 5 6 7 8 9

Countries with a green colour
Tested & adopted
Countries with a bright green colour
Adopted
Countries with a yellow colour
Tested
Countries with a blue colour
Testing ongoing
Egypt Equatorial Guinea Ethiopia Algeria Angola Benin Botswana Burundi Burkina Faso Democratic Republic of the Congo Djibouti Côte d’Ivoire Eritrea Gabon Gambia Ghana Guinea Guinea-Bissau Cameroon Kenya Libya Liberia Madagascar Mali Malawi Morocco Mauritania Mozambique Namibia Niger Nigeria Republic of the Congo Rwanda Zambia Senegal Sierra Leone Zimbabwe Somalia South Sudan Sudan South Africa Eswatini Tanzania Togo Tunisia Chad Uganda Western Sahara Central African Republic Lesotho
Countries where the technology is being tested or has been tested and adopted
Country Testing ongoing Tested Adopted
Kenya No ongoing testing Tested Adopted
Nigeria No ongoing testing Tested Adopted
Tanzania No ongoing testing Tested Adopted
Uganda No ongoing testing Tested Adopted

This technology can be used in the colored agro-ecological zones. Any zones shown in white are not suitable for this technology.

Agro-ecological zones where this technology can be used
AEZ Subtropic - warm Subtropic - cool Tropic - warm Tropic - cool
Arid
Semiarid
Subhumid
Humid

Source: HarvestChoice/IFPRI 2009

The United Nations Sustainable Development Goals that are applicable to this technology.

Sustainable Development Goal 1: no poverty
Goal 1: no poverty

By strengthening seed supply chains, reducing waste, and improving farmer productivity, the SRE Tool helps lift farming households and seed entrepreneurs out of poverty while creating more resilient rural economies.

Sustainable Development Goal 12: responsible production and consumption
Goal 12: responsible production and consumption

By aligning seed supply with real demand, the SRE Tool prevents oversupply and wastage of vegetative planting materials, reduces inefficient use of land and resources, and improves profitability for seed producers. This supports more sustainable and resource-efficient production systems across seed value chains.

Sustainable Development Goal 13: climate action
Goal 13: climate action

The SRE Tool strengthens resilience to climate shocks by ensuring timely access to quality planting materials that are more tolerant to drought, pests, and diseases. By reducing losses and enabling rapid recovery after adverse seasons, it helps farming households adapt to the impacts of climate change.

National Level (for Government, NGOs, Humanitarian Organizations)

  1. Log in to the online SRE Tool.

  2. Select your country, crop, and projection start year.

  3. Choose projection parameters:

    • Standard parameters: preloaded based on expert data.

    • Set own parameters: customize adoption rates, seed replacement cycles, area under improved varieties, purchase behavior, and seeding rates.

  4. Run Projection: the tool generates national-level estimates of Quality Declared Seed (QDS) demand.

  5. View and use results: review projections in an easy-to-read format.

  6. Export results: download to Excel for planning, reporting, or investment discussions.

Enterprise Level (for Seed Producers, Agribusinesses)

  1. Log in to the online SRE Tool
  2. Select country, crop, and projection year (e.g., Tanzania, Sweetpotato, 2025 onwards).

  3. Define start and end points in the seed chain (e.g., Pre-basic Seed → QDS).

  4. Pick projection type: Forward (from starting material to final material).

  5. Enter starting material (e.g., 100 cuttings of 15 cm Pre-basic Seed).

  6. Select number of harvests (e.g., Two).

  7. Choose projection parameters: Standard (built-in) or user-defined.

  8. Run Projection: the tool generates:

    • Summary Report: timeline, starting material, land requirements, and outputs at each seed class.

    • Seed Production Chart: visualizes multiplication through the chain.

    • Seed Production Calendar: seasonal overview of seed availability.

  9. Export results: download to Excel to save and share your customized production plan.

Last updated on 29 September 2025