Agricultural law reauthorizes banned pesticides

The agricultural emergency law, enacted on August 18, 2026, derogatorily reauthorizes certain neonicotinoids, a class of insecticides previously restricted due to their environmental risks. The law also mandates the creation of a monitoring council to assess the environmental impacts of these pesticides.

Monitoring council’s role and limitations

The law’s Article 6 tasks a monitoring council with examining the effects of the derogations, using data from the National Agency for Food, Environmental and Occupational Health Safety (Anses). However, current systems are not yet equipped to effectively monitor the ecological impacts of these pesticides.

Regulation of pesticides in France

Since the 1943 law, pesticide authorization in France has relied on a priori evaluations of safety and efficacy. Today, the European Regulation (EC) No 1107/2009 governs pesticide approvals, involving a two-step process: first assessing active substances and then commercial products.

European oversight and national implementation

The European Food Safety Authority (EFSA) oversees the evaluation of active substances, while member states, including France, decide on the authorization of commercial products. In France, Anses evaluates these products, focusing on the chemical substances and their usage conditions.

Evolution of risk assessment challenges

For over half a century, chemical substances have been the central focus of regulation. However, the complexity of modern pesticide use—diverse applications, chronic effects, and interactions with other substances—has made a priori risk assessments increasingly inadequate for capturing real-world impacts.

Real-world data needed for informed decisions

Public policies now must balance environmental protection with agricultural needs and climate adaptation. This has led to a growing recognition that decisions should not rely solely on pre-market evaluations but also on post-market monitoring of actual pesticide use effects.

Neonicotinoids and the need for monitoring

Neonicotinoids, such as imidacloprid, were authorized in the 1990s after initial risk assessments. However, beekeepers observed unusual bee deaths, leading to restrictions in 2013 and a full ban in 2018. This highlights the need for monitoring systems that can detect long-term and indirect effects.

Monitoring as a policy tool

Environmental policies now emphasize monitoring to track health, biodiversity, and water quality. This monitoring can inform policy adjustments, not just verify existing decisions. The agricultural emergency law seeks to use this approach for newly authorized pesticides.

Challenges in monitoring pesticide effects

Despite the need for monitoring, current systems lack the capability to detect subtle or long-term effects. Early detection of unintended consequences, distinguishing natural fluctuations from harmful impacts, and linking local observations to broader trends remain significant scientific challenges.

Ecotoxicology’s evolving role

Ecotoxicology, traditionally focused on characterizing substance properties, must now develop methods to understand complex socio-ecosystems affected by multiple chemical stresses. This requires new tools and knowledge to monitor real-world pesticide impacts effectively.

Limitations in current monitoring systems

Current monitoring systems lack harmonized protocols, robust indicators, and permanent observation networks. This makes it difficult to detect chronic or behavioral effects of pesticides in real-world conditions, especially for species like bees.

Bees as a key indicator species

Bees have long been a focal point in environmental health due to their role in pollination. Despite extensive research showing neonicotinoids’ toxicity to bees, current monitoring systems struggle to detect these effects in field conditions, where multiple variables complicate the analysis.

Challenges in field-based bee monitoring

In controlled experiments, the effects of pesticides on bee immunity can be measured using genetic techniques. In the field, however, these effects are harder to detect, often masked by other environmental factors such as disease, food availability, and weather.

Need for new diagnostic tools for bees

Unlike human health, which uses blood tests to detect disturbances, bee monitoring relies on general signs like colony mortality. Developing more precise indicators and tools, such as RFID tags or behavioral tracking, is essential but technically and economically challenging.

Future of pesticide monitoring

The integration of risk assessment and monitoring is crucial for effective environmental policy. Developing new methods and systems to support this integration will determine the success of future pesticide regulations and the protection of ecosystems.