Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Strengthening cover crop seed value chains to scale agroecology in Cambodia: a Battambang case study

Quentin Theiva à Hauariki, Alessandra Giuliani, Veng Sar, Sophal Koun, Sreymom Sieng, Vira Leng, Setha Rath, Florent Tivet

Frontiers in Agronomy · 2026

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Summary

This mixed-methods case study in Battambang Province investigates the emerging cover crop seed value chain in Cambodia, documenting substantial growth in Crotalaria production over six years but finding profitability modest relative to maize monoculture. Whilst 90% of rice farmers reported soil fertility improvements, economic constraints and climatic setbacks limited achievement of production targets, and stakeholder analysis reveals a complex landscape requiring coordinated action to scale agroecological adoption.

UK applicability

The findings on cover crop profitability and stakeholder coordination challenges have limited direct applicability to UK conditions, where cover crops are already well-established in policy and practice; however, the participatory value chain methodology and stakeholder mapping approach may be transferable to understanding barriers to adoption of other agroecological practices in UK farming systems.

Key measures

Cover crop seed production area (hectares); net profit differential ($/ha/year); farmer perceptions of soil fertility improvement and scaling barriers; stakeholder mapping and influence analysis

Outcomes reported

The study documented rapid expansion of cover crop seed production (from 2 ha in 2017 to 177 ha in 2023), primarily Crotalaria species, and assessed profitability, farmer incentives, and barriers to scaling adoption in rice-based systems. It mapped the stakeholder network and identified economic and climatic constraints limiting further uptake despite widespread farmer observations of soil fertility improvements.

Theme
Farming systems, soils & land use
Subject
Soil fertility & nutrient management
Study type
Research
Study design
Case study with mixed methods
Source type
Peer-reviewed study
Status
Published
Geography
Cambodia
System type
Mixed farming
DOI
10.3389/fagro.2026.1682252
Catalogue ID
SNmov0fdd5-c7h3fn

Topic tags

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