Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming

Abstract Pesticide residues are much lower in organic than in conventional food. The article summarizes the available residue data from the EU and the U.S. organic market. Differences between samples from several sources suggest that organic products are declared conventional, when they have residue...

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Autores principales: Albrecht Benzing, Hans-Peter Piepho, Waqas Ahmed Malik, Maria R. Finckh, Manuel Mittelhammer, Dominic Strempel, Johannes Jaschik, Jochen Neuendorff, Liliana Guamán, José Mancheno, Luis Melo, Omar Pavón, Roberto Cangahuamín, Juan-Carlos Ullauri
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Publicado: Nature Portfolio 2021
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Acceso en línea:https://doaj.org/article/a1975fe9d4c64410a594f0afcf980600
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spelling oai:doaj.org-article:a1975fe9d4c64410a594f0afcf9806002021-12-02T16:17:17ZAppropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming10.1038/s41598-021-93624-82045-2322https://doaj.org/article/a1975fe9d4c64410a594f0afcf9806002021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93624-8https://doaj.org/toc/2045-2322Abstract Pesticide residues are much lower in organic than in conventional food. The article summarizes the available residue data from the EU and the U.S. organic market. Differences between samples from several sources suggest that organic products are declared conventional, when they have residues—but the origin of the residues is not always investigated. A large number of samples are being tested by organic certifiers, but the sampling methods often do not allow to determine if such residues stem from prohibited pesticide use by organic farmers, from mixing organic with conventional products, from short-range spray-drift from neighbour farms, from the ubiquitous presence of such substances due to long-distance drift, or from other sources of contamination. Eight case studies from different crops and countries are used to demonstrate that sampling at different distances from possible sources of short-distance drift in most cases allows differentiating deliberate pesticide application by the organic farmer from drift. Datasets from 67 banana farms in Ecuador, where aerial fungicide spraying leads to a heavy drift problem, were subjected to statistical analysis. A linear discriminant function including four variables was identified for distinguishing under these conditions application from drift, with an accuracy of 93.3%.Albrecht BenzingHans-Peter PiephoWaqas Ahmed MalikMaria R. FinckhManuel MittelhammerDominic StrempelJohannes JaschikJochen NeuendorffLiliana GuamánJosé ManchenoLuis MeloOmar PavónRoberto CangahuamínJuan-Carlos UllauriNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Albrecht Benzing
Hans-Peter Piepho
Waqas Ahmed Malik
Maria R. Finckh
Manuel Mittelhammer
Dominic Strempel
Johannes Jaschik
Jochen Neuendorff
Liliana Guamán
José Mancheno
Luis Melo
Omar Pavón
Roberto Cangahuamín
Juan-Carlos Ullauri
Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
description Abstract Pesticide residues are much lower in organic than in conventional food. The article summarizes the available residue data from the EU and the U.S. organic market. Differences between samples from several sources suggest that organic products are declared conventional, when they have residues—but the origin of the residues is not always investigated. A large number of samples are being tested by organic certifiers, but the sampling methods often do not allow to determine if such residues stem from prohibited pesticide use by organic farmers, from mixing organic with conventional products, from short-range spray-drift from neighbour farms, from the ubiquitous presence of such substances due to long-distance drift, or from other sources of contamination. Eight case studies from different crops and countries are used to demonstrate that sampling at different distances from possible sources of short-distance drift in most cases allows differentiating deliberate pesticide application by the organic farmer from drift. Datasets from 67 banana farms in Ecuador, where aerial fungicide spraying leads to a heavy drift problem, were subjected to statistical analysis. A linear discriminant function including four variables was identified for distinguishing under these conditions application from drift, with an accuracy of 93.3%.
format article
author Albrecht Benzing
Hans-Peter Piepho
Waqas Ahmed Malik
Maria R. Finckh
Manuel Mittelhammer
Dominic Strempel
Johannes Jaschik
Jochen Neuendorff
Liliana Guamán
José Mancheno
Luis Melo
Omar Pavón
Roberto Cangahuamín
Juan-Carlos Ullauri
author_facet Albrecht Benzing
Hans-Peter Piepho
Waqas Ahmed Malik
Maria R. Finckh
Manuel Mittelhammer
Dominic Strempel
Johannes Jaschik
Jochen Neuendorff
Liliana Guamán
José Mancheno
Luis Melo
Omar Pavón
Roberto Cangahuamín
Juan-Carlos Ullauri
author_sort Albrecht Benzing
title Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
title_short Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
title_full Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
title_fullStr Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
title_full_unstemmed Appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
title_sort appropriate sampling methods and statistics can tell apart fraud from pesticide drift in organic farming
publisher Nature Portfolio
publishDate 2021
url https://doaj.org/article/a1975fe9d4c64410a594f0afcf980600
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