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Hanisch et al. (2025) Precise pesticide application - an earthworm field study
In the course of the advancing digitalization of agriculture, the precision application of pesticides is coming more and more into focus. Today’s technology enables farmers to apply products only on spots or areas where needed. This leads to more heterogeneous pesticide spraying patterns compared with conventional full-area application.
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1 MB
Wittwer at al. (2024) After dark, all CATs are leopards
Recently, the ‘Closure Principle Computational Approach Test’ (CPCAT) was developed as a method that should overcome the shortcomings of NOEC/LOEC application in ecotoxicological pesticide risk assessments. CPCAT is supposed to handle abundance data characterized by low abundances, Poisson distributed, and overdispersion without restrictions.
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528 KB
Singer at al. (2023) BEEHAVE – Analysing the Significance of Increased Brood Termination Rate on the Colony Strength in Honey Bees
The brood termination rate (BTR) investigated in higher-tier studies according to OECD GD 75 for pesticide risk assessment is the determinant of honey bee (Apis mellifera) mortality during pre-imaginal development and thus influences colony strength.
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1 MB
Jakoby at al. (2023) Spatially explicit population models support impact assessment of precision application - a common vole example
Precision farming has the potential to reduce the impact of pesticides on the environment. Particularly, a more precise use of pesticides can result not only in a reduced pesticide load, but also in a spatially heterogeneous application pattern on the field scale. Accordingly, the effect of the pesticide on populations of non-target species might change.
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2 MB
Jakoby at al. (2022) A user-friendly software tool for DEB-TKTD model predictions
Toxicokinetic-toxicodynamic models based on dynamic energy budget theory (DEB-TKTD models) simulate sublethal effects of pesticides, exploring the effects of toxicants on growth and reproduction over time.
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714 KB
Klein et al. (2022) Results of Ring‐Testing of a Semifield Study Design to Investigate Potential Impacts of Crop Protection Products on Bumblebees (Hymenoptera, Apidae) and a Proposal of a Potential Test Design
In Europe, the risk assessment for bees at the European Union or national level has always focussed on potential impacts on honeybees. During the revision of the European Food Safety Authority bee guidance it was explicitly stated that bumblebees and solitary bees should be considered as well and consequently concerns were raised regarding the representativeness of honeybees for these other bee species.
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665 KB
Ludwigs et al. (2022) Assessing the Portion of Diet Taken by Birds and Mammals from a Pesticide‐Treated Area—Proposal for a Joint Way Forward
An environmental risk assessment for birds and mammals is an important part of any application package for potential registration of pesticides in Europe. A realistic estimation of the exposure of a certain species to the pesticide under field conditions is a refinement factor in long‐term higher‐tier risk assessments.
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472 KB
Nickisch et al. (2022) Fish Species Sensitivity Ranking Depends on Pesticide Exposure Profiles
In the regulatory environmental risk assessment of plant protection products, the exposure tested in standard toxicity tests assumes simple exposure dynamics, such as constant exposure at the first stage of testing. However, environmental exposure can be highly dynamic.
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1 MB
Singer, Nickisch, Gergs (2022) Joint survival modelling for multiple species exposed to toxicants
In environmental risk assessment (ERA), the multitude of compounds and taxa demands cross-species extrapolation to cover the variability in sensitivity to toxicants. However, only the impact of a single compound to a single species is addressed by the general unified threshold model of survival (GUTS).
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2 MB
Mair et al. (2020) The Minimum Detectable Difference (MDD) Concept for Establishing Trust in Nonsignificant Results: A Critical Review
Current regulatory guidelines for pesticide risk assessment recommend that nonsignificant results should be complemented by the minimum detectable difference (MDD), a statistical indicator that is used to decide whether the experiment could have detected biologically relevant effects.
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1 MB
Schabacker et al. (2020) Residue Levels of Pesticides on Fruits for Use in Wildlife Risk Assessments
The guidance document on risk assessment for birds and mammals (GD) provides generic residue values of pesticides on potential diet items for use in wildlife risk assessments. For most diet items, these values are based on a large number of residue studies.
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116 KB
Schimera et al. (2020) Consideration of nectarivorous birds in wildlife risk assessments
In subtropical and tropical climate zones where crops exhibit a flowering phase before harvest, nectar-feeding birds (see table) may be attracted to crop flower nectar. We present points to consider on whether and how a nectarivorous avian scenario might be included in higher tier environmental risk assessment (ERA) for plant protection products (PPPs) and what data would be needed.
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431 KB