A new conceptual model of pesticide transfers from agricultural land to surface waters with a specific focus on metaldehyde

Whelan, M. J.; Ramos, Andre; Villa, Raffaella; Guymer, I.; Jefferson, Bruce; Rayner, M. C.

doi:10.1039/c9em00492k

Cited by 6 publications

(4 citation statements)

References 76 publications

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“…However water quality degradation is still problematic, due to leaky sewers, rain runoff on contaminated surfaces, and untreated wastewater discharge in surface waters during rain events [2]. The spatial and temporal monitoring of water quality in rivers is crucial to optimize the management of freshwater resources since it provides important information to guide stakeholders [3][4][5]. However for most regulatory parameters, expensive and time-consuming field collection and laboratory analysis are necessary.…”

Section: Introductionmentioning

confidence: 99%

“…More effective water quality control should rely on methods that are rapid and low cost with minimum sampling required, and, ultimately, it should provide real-time results [8][9][10]. In addition, in situ sensing devices combined with machine learning could help stakeholders to detect in real time the possible contamination and to optimize the sampling effort [4,5]. Cost-effective strategies should rely on few selected parameters with available low-cost sensors that will serve as indicators of water quality.…”

Section: Introductionmentioning

confidence: 99%

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Long-Term Stability of Low-Cost IoT System for Monitoring Water Quality in Urban Rivers

Naloufi,

Abreu,

Souihi

et al. 2024

Water

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Monitoring water quality in urban rivers is crucial for water resource management since point and non-point source pollution remain a major challenge. However, traditional water quality monitoring methods are costly and limited in frequency and spatial coverage. To optimize the monitoring, techniques such as modeling have been proposed. These methods rely on networks of low-cost multiprobes integrated with IoT networks to offer continuous real-time monitoring, with sufficient spatial coverage. But challenges persist in terms of data quality. Here, we propose a framework to verify the reliability and stability of low-cost sensors, focusing on the implementation of multiparameter probes embedding six sensors. Various tests have been developed to validate these sensors. First of all, a calibration check was carried out, indicating good accuracy. We then analyzed the influence of temperature. This revealed that for the conductivity and the oxygen sensors, a temperature compensation was required, and correction coefficients were identified. Temporal stability was verified in the laboratory and in the field (from 3 h to 3 months), which helped identify the frequency of maintenance procedures. To compensate for the sensor drift, weekly calibration and cleaning were required. This paper also explores the feasibility of LoRa technology for real-time data retrieval. However, with the LoRa gateways tested, the communication distance with the sensing device did not exceed 200 m. Based on these results, we propose a validation method to verify and to assure the performance of the low-cost sensors for water quality monitoring.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Long-Term Stability of Low-Cost IoT System for Monitoring Water Quality in Urban Rivers

Naloufi,

Abreu,

Souihi

et al. 2024

Water

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“…It has been widely used as a molluscicide since the ‘40 s [ 16 , 17 ]. Unfortunately, during rainfalls, these substances are washed away from fields and are released into the environment in an uncontrolled way, especially into the soil than to hydrosphere–where they are responsible for contamination of, e.g., drinking water [ 18 , 19 , 20 , 21 ]. Additionally, molluscicides have harmful effects on animals, including pets [ 22 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Bioactive Modified Non-Wovens as a Novel Approach of Plants Protection against Invasive Slugs

et al. 2021

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Invasive slugs generate significant problems in the area of horticultural and agricultural production. Despite the multitude of methods to reduce the pest population, including preventive, mechanical, agrotechnical, cultivation, biological, and chemical treatments, no effective plant protection strategy has been developed so far. In this paper, a solution based on modified non-woven fabric with bioactive molluscicidal properties using the extract of tansy flower, metaldehyde, and abamectin (Vertigo® 018 EC) was proposed. All modified mats show significant anti-slug properties in comparison to control, and molluscicidal properties depend on the type of active substance. Non-woven modified with commonly used metaldehyde demonstrated fast action against slugs and presents the highest efficiency. The effectiveness of non-woven mats with Vertigo® 018 EC is lower than for the mats with metaldehyde but higher than for the mats modified with tansy flower extract. The proposed solution will enable removing and neutralization of molluscicide from the fields, after the efficient pest control, according to circular economy principles. Moreover, it may allow for better control of the molluscicide release to the environment in comparison to widely used pellets, and contribute to the virtual protection of plants against invasive slugs.

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“…Metaldehyde pellets kill pest molluscs or paralyse them, making them more vulnerable to predators and environmental stresses [3]. Poor application or rainfall events can cause metaldehyde to leach from the pellets into the water system where it is difficult and expensive to remove [4][5][6]. Metaldehyde has consistently been the main cause for failure to achieve European Union drinking water standards of 0.1 µg L −1 for individual pesticides and 0.5 µg L −1 for total pesticides [7,8].…”

Section: Introductionmentioning

confidence: 99%

Listening to Slugs: Acceptability and Consumption of Molluscicide Pellets by the Grey Field Slug, Deroceras reticulatum

Silva

Chesmore

Smith

et al. 2021

Insects

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Gastropod damage to crop plants has a significant economic impact on agricultural and horticultural industries worldwide, with the Grey Field Slug (Deroceras reticulatum (Müller)) considered the main mollusc pest in the United Kingdom and in many other temperate areas. The prevailing form of crop protection is pellets containing the active ingredient, metaldehyde. Metaldehyde can cause paralysis and death in the mollusc, depending on the amount ingested. The paralysing effects may result in reduced pellet consumption. A greater understanding of metaldehyde consumption may reveal an area that can be manipulated using novel molluscicide formulations. Novel pellet types included commercial metaldehyde pellets coated so that metaldehyde is released more slowly. In both laboratory and arena trials, an audio sensor was used to record individual slugs feeding on a variety of pellet types, including commercially available toxic pellets (metaldehyde and ferric phosphate) and novel metaldehyde formulations. The sensor was used to record the length of each bite and the total number of bites. There was no significant difference in the length of bites between pellet types in laboratory trials. Novel pellets were not consumed more than commercial pellet types. Commercial pellet types did not differ in consumption.

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A new conceptual model of pesticide transfers from agricultural land to surface waters with a specific focus on metaldehyde

Abstract: Pesticide losses from agricultural land to water can result in the environmental deterioration of receiving systems.

Cited by 6 publications

References 76 publications

Long-Term Stability of Low-Cost IoT System for Monitoring Water Quality in Urban Rivers

Long-Term Stability of Low-Cost IoT System for Monitoring Water Quality in Urban Rivers

Bioactive Modified Non-Wovens as a Novel Approach of Plants Protection against Invasive Slugs

Listening to Slugs: Acceptability and Consumption of Molluscicide Pellets by the Grey Field Slug, Deroceras reticulatum

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