Development of a Data Set of Pesticide Dissipation Rates in/on Various Plant Matrices for the Pesticide Properties Database (PPDB)

Abstract

Data relating to the rate at which pesticide active substances dissipate on or within various plant matrices are important for a range of different risk assessments; however, despite the importance of this data, dissipation rates are not included in the most common online data resources. Databases have been collated in the past, but these tend not to be maintained or regularly updated. The purpose of the exercise described herein was to collate a new database in a format compatible with the main online pesticide database resource (the Pesticide Properties Database, PPDB), to validate this database in line with the Pesticide Properties Database protocols and thus ensure that the data is maintained and updated in future. Data was collated using a systematic review approach using several scientific databases. Collated literature was subjected to a quality assessment, and then data was extracted into an MS Excel spreadsheet. The outcome of the study is a database based on data collated from 1390 published articles covering over 400 pesticides and over 200 crops across a wide variety of different matrices (leaves, fruits, seeds etc.) for pesticide residues on the crop surface, as well as residues absorbed within the plant material. This data is now fully incorporated into the PPDB.Data Set: available as a supplementary file: "Plant dissipation data August 2017.xlxs". Data Set License:This data set was made available under a CC-BY license.Keywords: pesticide dissipation; risk assessment; environmental fate SummaryData relating to the rate at which pesticide active substances dissipate or decay on or within various plant matrices (e.g., leaves, stems, seeds, fruits) are important for a range of different risk assessments. For example, dissipation rates can be used to determine when workers can safely reenter fields and glasshouses following a pesticide application [1], and may also be used to estimate the potential exposure of individuals who may come in contact with, for example, sprayed sports turf or golf greens [2,3]. Dissipation rates also have application in consumer safety. For example, these values are used in calculations for predicting residue concentrations in harvested produce and for determining the time interval needed between crop spraying and harvesting or potential processing/consumption in order to minimise residue concentrations [4,5]. Dissipation rates also have value when considering the potential risk to non-target and beneficial organisms (e.g., pollinators) that may forage or otherwise come in contact with a pesticide treated plant, as well as informing on how long the chemical is likely to offer satisfactory pest control before it decays [6][7][8]. As a consequence, plant matrix half-lives are often an important input parameter into various risk assessment models [9][10][11][12].In this context, dissipation rate is defined as the rate at which the pesticide active substance disappears from the part of the plant measured due to the combined effects of different processes Preprints (www...

PCPF‐M model for simulating the fate and transport of pesticides and their metabolites in rice paddy field

“…The formation rate of FSN in soil (PSL and PRZ) used in the simulations was calibrated to the value of 25% (Table ) which is consistent with the literature where the maximum formation ratio of FSN in soil was reported as not exceeding 34.3% . The observed concentrations of FSN peaked three days after the application of fipronil in PW and PSL for the two monitoring years (Figs c,d and c,d).…”

“…The input parameters used to forecast the concentrations of fipronil were selected to be identical to those reported during the validation of the PCPF‐NB model . Input parameters for the metabolites FSN and FD were extracted from the literature or calibrated when no data were available . The input parameters used in the PCPF‐M model for forecasting the concentrations of fipronil and its metabolites in PW are presented in Table while the forecasted and observed concentrations of fipronil, FSN and FD are displayed in Fig.…”

Dissipation of plant protection products from foliage

“…These results are in line with observations in the present study, in which marked differences were observed between trials. Lewis and Tzilivakis () stressed the importance of keeping a database on foliar half‐lives up to date because the portfolio of chemicals constantly changes.…”

Dissipation of the pesticides fipronil, cypermethrin, and tebuconazole in vegetables: A case study in Thua Thien-Hue province, Central Vietnam

“…The exponential decay equation helps to significantly predict the half-life of individual pesticides as well as the theoretical residue of the target pesticide in a plant at a specific time. 18) In addition, studies elsewhere have developed different dissipation models of pesticides in soil or plants using either bi-exponential or mono-exponential models. The review conducted by Fantke and Juraske 19) provided an overview of nine kinetic models to predict pesticide-dissipation half-lives in plants.…”