Pesticide behaviour in soils, water and air

Ron Cooke Hub, University of York, UK

12.00 Monday 4th April to 14.00 Wednesday 6th April 2022

Details of the conference sessions

Sessions & abstract submission

To submit an abstract, please complete the online form accessed via the button.

Deadline: Tuesday 30th November 2021

Laboratory-scale investigations of fate in soil, water and air

This session focuses on laboratory scale analyses which unravel the biotic and abiotic processes that influence the transformation, movement and availability of pesticides in soil, water and air. This includes biodegradation processes, encompassing interactions with environmental variables, the characteristics and dynamics of the organisms involved, and the molecular mechanisms underlying biodegradation. The session will also consider ecotoxicological impacts which may affect pesticide persistence. Additionally, the role of adsorption processes, and chemical, hydrolytic, volatility and photochemical mechanisms, in determining pesticide fate will be explored. Particular emphasis will be given to integrating mechanistic understanding of these processes with the prediction of pesticide fate and exposure in the environment.

 

Field-scale investigations of fate in soil, water and air

Field-scale investigations under natural conditions bring together all competing mechanisms of hydrolysis, photolysis, volatilisation, leaching, uptake, runoff and microbial degradation to provide data under use pattern conditions. Understanding of pore-to-core scale processes of transfer and interactions between pesticides and soil, water, plant and air with the use and management of pesticides at field scale within both present and future cropping systems is crucial and enables the vital links to environmental modelling. This session will gather all relevant information investigating fate of pesticides (including interactions with surfactants and additives) in field soils and crops (together or as separate components) that govern the availability of pesticide and/or metabolite residues for transfer to ground- and surface waters and into the air compartment. It will also cover technological developments improving assessments of fate and the dominant transfer pathways of pesticides including application methods addressing field heterogeneity, as well as studies into the link between fate and effects including the soil microbial community.

 

Landscape studies into pesticide fate and exposure

High-quality, safe, and sufficient drinking water and food is essential for life, but monitoring studies report undesirable contamination by pesticides in off-target terrestrial ecosystems, surface waters, groundwaters and air. Improved insight into processes governing fate and exposure at the landscape scale and the development of tools to express how fate and exposure varies across the landscape are needed to develop strategies to reduce diffuse contamination by pesticides. This session will address soil, surface water, groundwater and air compartments, and welcomes monitoring studies, new understanding of landscape processes, novel tools for landscape-level modelling and assessment, and case studies on application of landscape approaches.

 

Innovative approaches in mathematical modelling

This session will discuss new developments and challenges of modelling environmental and human exposure including: interpretation of experimental studies to advance our understanding of how chemical properties, management options and environmental conditions affect exposure in soil, water and air; new and improved tools, process descriptions and parameterisation at various scales; modelling approaches that integrate with digital technologies; simulation modelling to underpin effective mitigation options; support for the design and interpretation of monitoring studies; and modelling that encompasses global variability and/or environmental change.

 

Mitigation and management for sustainable use of pesticides

Environmental risk mitigation measures are increasingly important components of the risk assessment process and conditions for use for plant protection products. Submissions are encouraged on practical field experiences with testing and implementation to characterise effectiveness and sensitivity of performance for reduction of off-field losses via leaching, drainage, run-off as well as volatilisation and dispersion in the air. Submissions are sought considering how such measures may be effectively represented in risk assessments through modelling and opportunities for translation into practical and effective labelling. Discussions will consider how risk management strategies can be designed to improve communication, awareness, uptake and implementation by product users.

 

Advances in design and interpretation of pesticide monitoring

To optimise the future environmental risk assessment, management and information technologies, documentation in the form of monitoring data on the potential presence of pesticides and their degradation products in soil, water and air are crucial. This session will discuss recent scientific and technological advances in soil, water and air monitoring activities and their influence on monitoring regarding design of monitoring programmes, interpretation of monitoring data, and dissemination of monitoring results. How can such activities facilitate the application of social and political requirements? Submissions including results of monitoring implemented for the pre-authorisation, post-authorisation and sustainable use of pesticide are invited in this session.

 

New challenges for the environmental behaviour of pesticides

New challenges for our understanding of the environmental behaviour of pesticides include: evaluating and describing in models the effect of innovative pesticide application techniques, including the use of digital technologies (digital labels, pest/disease/weed recognition systems, spot and spray etc.); capturing the effects of diversifying agricultural practices in a context of agro-ecological transition, and impacts of global changes on the use and fate of pesticides in the environment; monitoring the diversity of compounds and their metabolites in the environment via new analytical methods; and finally, translating these advances into consequences for risk assessment. This session will be devoted to work that opens up avenues for consideration on these new challenges.