Agroecology in Action for Multi-Pest Crop Protection in Cambodia

15/05/2025
A national workshop in Phnom Penh marked the conclusion of a year-long study on Fall Armyworm and opened discussions on future agroecological crop protection strategies in Cambodia. Researchers and representatives from international institutions, NGOs, and provincial agriculture departments gathered to share findings and shape a new multi-pest approach to plant health and reduce pesticide applications.
le projet Diagnostic des dégâts causés par la chenille légionnaire d’automne dans les exploitations agricoles cambodgiennes
le projet Diagnostic des dégâts causés par la chenille légionnaire d’automne dans les exploitations agricoles cambodgiennes

Participants à l’atelier national du projet DDFAW. © N. Thanon

Held on 9 May 2025 in Phnom Penh, the Agroecological Crop Protection Day focused on the future of pest and disease management in Cambodia’s crop systems. The event was co-organized by the General Directorate of Agriculture (GDA) and ÌÇÐÄVlog, with the support of the French Embassy in Cambodia. It brought together representatives from the Ministry of Agriculture, research institutions, universities including the Royal University of Agriculture (RUA), the Royal University of Phnom Penh (RUPP), and the Institute of Technology of Cambodia (ITC), as well as NGOs such as HEKS/EPER Cambodia and GRET, and provincial department of agriculture officers.

The workshop marked the conclusion of the Diagnostic of Damage of Fall Armyworm in Cambodian Farms (DDFAW) project, which conducted a year-long field study on pest damage in maize and sweet corn in farmers field across Battambang, Kandal, and experimental stations in Kampong Cham and Battambang. Participants reflected on recent agroecological research and laid the groundwork for a new initiative focused on multi-pest crop protection strategies adapted to Cambodia’s farming conditions.

Cambodia’s crop sector is at a crossroads. Faced with increasingly frequent pest outbreaks, soil degradation, pesticide misuse, and the unpredictable effects of climate change, the country’s current reliance on chemical control is proving costly to the environment and public health. Farmers rely heavily on synthetic pesticides for pest management, leading to resistance build-up and biodiversity loss. In this context, there is growing urgency to shift toward more resilient and knowledge-based approaches. Agroecology offers a way forward. By working with ecological processes, enhancing biodiversity, and strengthening farmer autonomy.

Alarming findings show overreliance on pesticides

ÌÇÐÄVlog DDFAW presentation on multi pest management approach

Dr Lucile DELATOUCHE, researcher at ÌÇÐÄVlog, presenting the result of DDFAW (Diagnostic of Damage of Fall ArmyWorm in Cambodian Farms) funding by French Embassy in Cambodia, during the workshop © Nuon Thanon

Over the past year, the DDFAW project assessed the impact of Fall Armyworm (FAW) on maize and sweet corn across Cambodian farming systems. The findings, presented by Dr. Lucile Delatouche, ÌÇÐÄVlog, revealed that farmers continue to rely exclusively on chemical pesticides, typically applying them 2 to 8 times per crop cycle even when monitoring results show limited effectiveness in reducing damage and yield loss.

These observations are raising concerns about the effectiveness and risks of chemical dependence. Additional field interviews in Battambang and Kandal confirmed the absence of alternative control strategies at the farmer level.

This workshop allowed to present for the first time an animated video created during the DDFAW project to raise awareness among Cambodian farmers of the excessive use of pesticides, the risks they represent for biodiversity and human health, and pesticide resistance.

Agroecological alternatives gaining ground

Research shared during the workshop highlighted a growing set of experiences that demonstrate how agroecological crop protection (ACP) can be adapted to Cambodia’s diverse farming systems. From rice to soybeans to cashew, researchers and practitioners are exploring options that reduce the need for chemical inputs while improving resilience and maintaining yields. . Dr. Kakada Oeum from the Institute of Technology of Cambodia introduced her PhD research on root-associated microbiomes in rice systems, showing how beneficial microbes can enhance crop resilience and reduce dependency on external inputs.

Kakada OEUM ITC DDFAW project exploration exploitation root-associated microbiome sustainable rice agriculture Cambodia

Dr Kakada OEUM from ITC (Institut Technologique du Cambodge) presenting her PhD results on Exploration and exploitation of root-associated microbiome for a sustainable rice agriculture in Cambodia © Nuon Thanon

ÌÇÐÄVlog and its partners are actively involved in several of these initiatives. The ASSET project, co-led by ÌÇÐÄVlog, has supported work on biological control in cashew systems, notably through the reintroduction of weaver ants in collaboration with HEKS Cambodia. Other ongoing initiatives, such as WAT4CAM, are contributing to the promotion of conservation agriculture and agroecological practices in upland cropping systems. Together, these efforts provide practical evidence that agroecological approaches can be integrated at scale in Cambodia’s varied farming conditions.

A shared commitment to transition

Dr Samnang Nguong, Researcher and Dean of Graduate School at Royal University of Agriculture and Center Director of ECOLAND in Cambodia

Opening remarks of Dr Samnang Nguong, Researcher and Dean of Graduate School at Royal University of Agriculture and Center Director of ECOLAND in Cambodia © Nuon Thanon

Agroecological crop protection is a sustainable approach to managing pests and diseases by working with nature rather than against it.

Dr. Samnang Nguong
Dean of the Graduate School at the Royal University of Agriculture and Director of ECOLAND
Mr Samoul Oeurn, Officer at Plant protection department of GDA

Mr Samoul Oeurn, Officer at Plant protection department of GDA (General Directorate of Agriculture), presenting the Concerns and objectives about crop protection and pest from MAFF © Nuon Thanon

In addition to international projects, national academic institutions also presented ongoing research supporting agroecological transitions. Representing MAFF, Mr. Samoul Oeurn from the General Directorate of Agriculture outlined national challenges in pest control and reaffirmed institutional interest in shifting away from chemical dependence.

The event also featured a participatory session aimed at co-designing Cambodia’s next national project on ACP. Representatives contributed ideas on multi-pest strategies that are adaptable to local conditions, socially inclusive, and grounded in both scientific and farmer knowledge. Participants echoed the need for collaborative frameworks that can embed agroecology into public policies, academic curricula, and farmer training programs.

Collective session for building a project on Agroecological Crop Protection

Collective session for building a project on Agroecological Crop Protection © Nuon Thanon

Science and dialogue for visibility

The workshop included a photo exhibition showcasing research and fieldwork under the DDFAW project and broader agroecological initiatives across Cambodia. The exhibition offered a visual narrative of the challenges and innovations at the heart of the country’s crop protection debate.

Pictures exhibition about Agroecological Crop Protection

Pictures exhibition about Agroecological Crop Protection © Nuon Thanon 

By combining science, open dialogue, and a multisectoral approach, the Agroecological Crop Protection Day has opened the door to a new phase of collective action. The momentum now rests on turning this shared vision into a concrete national program that supports Cambodia’s transition to a healthier and more resilient agricultural future.