Good Food for Cities

Case study: PGS organic in Thanh Xuan, Hanoi – An example of sustainability

May 2, 2019
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Participatory Guarantee System (PGS) is a low-cost quality assurance mechanism that guarantees the quality of agricultural products and has the potential to regain consumers’ trust. Implemented in 66 countries worldwide, it has been used in Vietnam for over 10 years. As part of the project “Capitalisation of Participatory Guarantee System experiences in Vietnam for upscaling & institutionalisation”, funded by the Agroecology Learning Alliance in Southeast Asia (ALiSEA) Vietnam National University of Agriculture and Rikolto investigated all the existing PGS in Vietnam to assess their strengths and weaknesses and come up with recommendations on how to improve PGS in the Vietnamese context. This case study investigates the factors that made PGS Thanh Xuan, established by the Danish NGO ADDA in 2008, the most successful PGS model in Vietnam and identifies some of the features that should be replicated by other PGS to improve their sustainability.


PGS was first implemented in Vietnam in Thanh Xuan commune, Soc Son district, in Hanoi. It was introduced by the Danish non-governmental organisation ADDA in 2008, following the model developed by IFOAM, the International Federation of Organic Agriculture Movements. Bai Thuong was the first farmer group to receive a certification in 2009.

Today, Thanh Xuan intergroup is comprised of 21 producer groups for a total of 121 members. Each producer group is composed of 3 to 9 farmers and constitutes the unit to which the certification is granted. Thanh Xuan intergroup is one of the 5 intergroups managed by PGS Vietnam’s General Coordination Board in northern Vietnam. PGS production is based on the Vietnam PGS Organic Standards in line with the Ministry of Agriculture and Rural Development’s Standards for Organic Production and Processing. In 2013, the Vietnam PGS Organic Standards were officially admitted into the IFOAM Family of Standards.

Over the 10 years of operations in Thanh Xuan, the production area for PGS organic vegetables increased from 7.7 ha to over 20 ha in 2018. So far, Thanh Xuan is the most sustainable PGS model in Vietnam, building on a solid market, government support, strong reputation and sustained commitment by its member farmers.

Why PGS?

Farmers in Thanh Xuan have a long tradition of growing vegetables. However, in the past, they used to apply large quantities of agrochemicals, especially fertilizers and pesticides. This resulted in a decrease in soil quality and adverse effects on farmers’ health. Most vegetables were sold at the local market at a low and unstable price. Due to the small size of their plots and limited financial resources, the majority of farmers was unable to apply for third-party food safety certifications. Besides vegetables, farmers used to grow rice as their main crop. With 2 harvests a year, their income from rice ranged from 3 to 4 million VND/year (USD 130-175) which was not enough to ensure decent living conditions. Therefore, a lot of residents left their homes to find jobs in other locations. PGS offered them a new opportunity to make a living out of vegetable production and to reduce the negative impact of conventional farming on their local environment and health.

When I was a child, I used to grow and sell vegetables with my mother. Cultivating vegetables was my hobby. However, in the past, I used a lot of chemicals which affected my health. Because of that, I gave up growing vegetable for a long time. In 2008, we were trained on producing vegetables according to the PGS organic standards. Today, my production volume is stable and I want to continue with PGS organic vegetable production

Ms. Thơ

Member of Bai Thuong producer group, Thanh Xuan Intergroup

PGS performance in Thanh Xuan

1. Food safety

Before they can apply for PGS certification, farmers must be trained for 3 months on the organic PGS standards and practices. Their water and soil are tested during the certification process to ensure their safety. The 3-level certification process – internal control within each farmer group, cross-checking across farmer groups and random inspections by the Coordination Board – coupled with the quick chemical test performed on the vegetables, controls and assures farmers’ compliance with the PGS Organic standard.

2. Income generation

Farmers’ income from the sales of PGS vegetables varies from 2.5 to 10 million VND (USD 110 – 430) per month depending on the size of the production area and season. This is approximately 12 times more than the income yielded from rice production. Most vegetables sell for 15,000 VND/kg (USD 0.65), except for herbs which cost 25,000 VND/kg (USD 1.1). This is higher than the price of non-PGS vegetables. This has resulted in higher and more stable income for farmers.

3. Visibility and consumer engagement

Thanh Xuan is well known by safe and organic food retailers in Hanoi, and by local customers. Between 2008 and 2015, over 500 groups have visited the site to learn about PGS and organic agriculture.

4. Market access

The Thanh Xuan intergroup sells 30 - 40 tons of organic vegetables per month to buyers in Hanoi and up to 70 tons in winter. In 2018, it has approximately 30 regular buyers from the retail sector such as Bac Tom, Tam Dat, Soi Bien and Ecomart. The intergroup also set up two businesses to support the marketing of its products: Thanh Xuan Agricultural Service and Investment Co., Ltd and Thanh Xuan Organic Vegetable Cooperative.

5. Sustainability

While the intergroup still receives external support from development actors, it has its own financial resources to pay for intergroup activities. These resources come from farmers’ contribution to the intergroup. Farmers also use part of their profit to invest in infrastructure such as irrigation systems and net-houses.

6. Environmental protection

PGS has contributed to reducing the environmental pollution linked to the use of agrochemicals in Thanh Xuan. Thanks to the use of organic fertilizer and compost, soil fertility has increased. The use of natural pest management methods such as natural insect repellent flowers contributes to local biodiversity.

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Success factors for PGS sustainability

  • Thanh Xuan farmers are able to plan their production well and to provide buyers with the vegetables they require, both
  • seasonal and off-season.
  • The intergroup’s strong connection to markets has enabled farmers to earn a stable income which has maintained their commitment over the years.
  • The proximity of Hanoi, where consumers’ demand for organic products is high, makes transportation easier and reduces logistical struggles.
  • Farmers have a good command of organic production techniques for vegetables and they demonstrate a hardworking attitude.
  • After 10 years of existence, the intergroup has been able to demonstrate the benefits of PGS to farmers which has encouraged new farmers to join the intergroup. It also managed to build a strong reputation with end-consumers and retailers in Hanoi, thus inspiring trust.
  • Intergroup leaders have demonstrated strong leadership, knowledge and enthusiasm and have been able to communicate them to farmers.
  • Local authorities at the communal and district level have supported the intergroup through land consolidation policies, training delivery, and infrastructure investment.


Despite the strengths mentioned above, a series of elements should still be improved to increase the sustainability and performance of PGS in Thanh Xuan. First, consumers should me more closely involved in cross-checking inspections and/or as members of the intergroup to further strengthen the t rust relationship between actors in the supply chain. Second, local authorities could increase their involvement by promoting PGS in their loc al community in order to attract more farmers to participate in the system and to encour age more consumers to buy PGS products. Some departments such as the Plant Protection Department could also increase the frequency of their food safety analysis to further build consumers’ trust. Third, the intergroup needs to maintain farmers’ knowledge up to date to ensure that all members follow the organic standard, the PGS pledge and PGS regulations correctly. Finally, the majority of farmers in the farmer groups are 50 years old or above. Young people do not envision a career in the agricultural sector and prefer to work as labourer in the industrial zones around Thanh Xuan. Mobilising young people to join PGS will be one of the challenges in the coming years.


Rikolto and VNUA express their sincere gratitude to all the farmers, consumers, representatives of companies, local authorities and NGOs for their participation in the PGS capitalisation study. Their insights offer a wealth of knowledge and have strongly contributed to improving our understanding of the current situation of PGS in Vietnam.

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