Project description
Investigating how pesticides spread on leaf surfaces
Pesticides are critical to boosting crop production, yet their efficiency is low – less than 1 % is actually absorbed by plants while the rest is lost, causing environmental harm. This happens because pesticide droplets do not spread well on plant surfaces after the water in them evaporates. With the support of the Marie Skłodowska-Curie Actions programme, the EdropSpread project aims to improve pesticide formulations by studying how these droplets behave on complex surfaces. Researchers will explore key variables such as oil and water concentrations in the mix and droplet sizes. By linking nanoscopic emulsion properties to macroscopic behaviour, the team will create a model to optimise pesticide emulsions, enhancing pesticide uptake and minimising environmental impacts.
Objective
Pesticides are critical to enhance crop production, with global usage reaching 4.3 million tons, double the amount used in 1990. They are typically formulated as oil-in-water emulsions, where active ingredients are dissolved in oil and stabilized with surfactants to improve adhesion to plant surfaces. After deposition, the water phase of the emulsion evaporates rapidly (<1 minute), while the dispersed oil droplets coalesce to form continuous films that spread outward, a process significantly slower than evaporation. However, less than 1% of the pesticides are absorbed by biological targets, with the majority lost during wetting and spreading on leaf surfaces, contributing to substantial environmental risks. This project, aligned with the goals of the European Green Deal, aims to develop a deeper understanding of the dynamics of emulsion drops at surfaces to optimize pesticide-emulsion formulations and handling protocols, thereby increasing their efficiency.
The properties of pesticide-emulsion drops at biomimetic surfaces will be explored for key variables such as surfactant concentration, oil-to-water ratio, and dispersed droplet size. The macroscopic behaviour of emulsion drops during evaporation shall be investigated by optical observations including the internal movement and coalescence of dispersed oil droplets and the formation and spreading of a nanoscopic oil layer by fluorescence microscopy and interference techniques. The microscopic properties of the tested emulsion formulation, like dynamic surface tension, micelle size, and disjoining pressure of the spreading micellar film shall be determined by methods such as dynamic light scattering, electron microscopy and force-distance curves. By quantitatively linking the nanoscopic emulsion properties to the macroscopic behaviour, a predictive model shall be developed, providing a foundation for optimizing the formulation of pesticide emulsions enhancing pesticide uptake and minimizing environmental impact.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences optics microscopy electron microscopy
- agricultural sciences agriculture, forestry, and fisheries agriculture agronomy
- social sciences economics and business economics sustainable economy
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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66123 Saarbrucken
Germany
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