Policy and regulation in seed sector development for vegetatively propagated crops: Insights from Kenya, Nigeria, and Vietnam

In many low- and middle-income countries, smallholder farmers cultivating vegetatively propagated crops (VPCs) have limited access to quality planting material. This constraint can limit both the yield and returns to VPC cultivation. Yet policy and regulations designed to strengthen access to quality VPC planting materials and scale innovative programs that deliver these materials have been relatively unsuccessful to date. Part of the problem lies the unique biological and economic characteristics of vegetative propagation and its distinctness from cereal crops that dominate narratives on seed sector reforms and the resulting policy and regulatory regimes. The study analyzes both theory and evidence on existing and alternative models of regulation that may incentivize cost-effective multiplication and distribution in VPC seed systems and markets. The study draws on case studies of policy and practice related to quality assurance regulations in four crop-country combinations: cassava in Nigeria and Vietnam, and potato in Kenya and Vietnam. The case studies rely on qualitative analysis that was conducted using a combination of key informant interviews, focus group discussions, analysis of regulatory documents, and analysis of publicly available secondary data. The study describes five strategies for regulating VPC seed systems in our four crop-country combinations, each with its own generalizable costs and benefits. The application (or marginalization) of these strategies is often shaped by fluid coalitions of actors with competing interests and framing narratives, and driven by organizational innovations, technological opportunities, trade relationships, and crises that are crop- and country-specific. These findings suggest that regulations designed around strict, centralized quality control systems tend to limit market size, while more localized production systems are limited by both capacity and reach. They also suggest the need for alternatives that balance a permissive regulatory regime with decentralized production systems, grassroots capacity development, market surveillance, and systems that integrate multiple approaches to quality assurance. A detailed set of policy recommendations follows from these findings that inform ongoing country efforts to revise VPC seed sector policies and regulations—reforms that are being pursued not only in the crop-country case studies highlighted here, but also in other countries in both Africa and Asia. • Seed quality assurance systems for vegetatively propagated crops are challenging. • Biological and economic characteristics of VPCs are often binding constraints. • We examine cassava and potato systems in Kenya, Nigeria, and Vietnam. • Strict regulatory regimes limit availability of/access to quality seed. • Policies to address this recognize multiple seed classes, production systems, and actors

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Publication Details

Journal
Agricultural Systems
Published
2025-07-05
DOI
https://doi.org/10.1016/j.agsy.2025.104441
Citations
1
Primary Topic
Agricultural Innovations and Practices
Type
article
Field-Weighted Citation Impact
4.83
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article

Policy and regulation in seed sector development for vegetatively propagated crops: Insights from Kenya, Nigeria, and Vietnam

Tesfamicheal Wossen, Mywish K. Maredia, David J. Spielman, Guy Hareau et al.
1 citations
Agricultural Systems
Agricultural Innovations and Practices
4.83
article

Policy and regulation in seed sector development for vegetatively propagated crops: Insights from Kenya, Nigeria, and Vietnam

Tesfamicheal Wossen, Mywish K. Maredia, David J. Spielman, Guy Hareau, Margaret McEwan, Marcel Gatto, Tahirou Abdoulaye
article en
1 citations

Abstract

In many low- and middle-income countries, smallholder farmers cultivating vegetatively propagated crops (VPCs) have limited access to quality planting material. This constraint can limit both the yield and returns to VPC cultivation. Yet policy and regulations designed to strengthen access to quality VPC planting materials and scale innovative programs that deliver these materials have been relatively unsuccessful to date. Part of the problem lies the unique biological and economic characteristics of vegetative propagation and its distinctness from cereal crops that dominate narratives on seed sector reforms and the resulting policy and regulatory regimes. The study analyzes both theory and evidence on existing and alternative models of regulation that may incentivize cost-effective multiplication and distribution in VPC seed systems and markets. The study draws on case studies of policy and practice related to quality assurance regulations in four crop-country combinations: cassava in Nigeria and Vietnam, and potato in Kenya and Vietnam. The case studies rely on qualitative analysis that was conducted using a combination of key informant interviews, focus group discussions, analysis of regulatory documents, and analysis of publicly available secondary data. The study describes five strategies for regulating VPC seed systems in our four crop-country combinations, each with its own generalizable costs and benefits. The application (or marginalization) of these strategies is often shaped by fluid coalitions of actors with competing interests and framing narratives, and driven by organizational innovations, technological opportunities, trade relationships, and crises that are crop- and country-specific. These findings suggest that regulations designed around strict, centralized quality control systems tend to limit market size, while more localized production systems are limited by both capacity and reach. They also suggest the need for alternatives that balance a permissive regulatory regime with decentralized production systems, grassroots capacity development, market surveillance, and systems that integrate multiple approaches to quality assurance. A detailed set of policy recommendations follows from these findings that inform ongoing country efforts to revise VPC seed sector policies and regulations—reforms that are being pursued not only in the crop-country case studies highlighted here, but also in other countries in both Africa and Asia. • Seed quality assurance systems for vegetatively propagated crops are challenging. • Biological and economic characteristics of VPCs are often binding constraints. • We examine cassava and potato systems in Kenya, Nigeria, and Vietnam. • Strict regulatory regimes limit availability of/access to quality seed. • Policies to address this recognize multiple seed classes, production systems, and actors

Agricultural SystemsVol. 229
International Potato Center (PE), Michigan Department of Agriculture and Rural Development (US), International Food Policy Research Institute (US), University of the Witwatersrand (ZA), International Potato Center (KE), International Institute of Tropical Agriculture (KE), Institut du Sahel (ML)
Zero hunger
Openalex Percentile: Top 6%
Agricultural Innovations and Practices
4.83
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