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Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf

In recent years, some golf course superintendents in Florida have reported that the turf health is no longer as great, and nematode responses to fluopyram have decreased. The objective of this research was to determine if the mechanism of the reported reduced efficacy was attributable to either: i)...

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Autores principales: Kammerer, Christian L., Harmon, Philip F., Crow, William T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sciendo 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10646960/
https://www.ncbi.nlm.nih.gov/pubmed/38026550
http://dx.doi.org/10.2478/jofnem-2023-0048
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author Kammerer, Christian L.
Harmon, Philip F.
Crow, William T.
author_facet Kammerer, Christian L.
Harmon, Philip F.
Crow, William T.
author_sort Kammerer, Christian L.
collection PubMed
description In recent years, some golf course superintendents in Florida have reported that the turf health is no longer as great, and nematode responses to fluopyram have decreased. The objective of this research was to determine if the mechanism of the reported reduced efficacy was attributable to either: i) enhanced degradation accelerating its breakdown in the soil, or ii) reduced sensitivity to the nematicide in the nematode populations. In a field experiment, soil and nematodes were collected from small plots that had been treated multiple times over four years, for only one year, or never treated. Soil and nematodes were additionally collected from commercial turf sites where either multiple applications of fluopyram had been made for numerous years, or it had never been used. Bioassay experiments found no evidence of enhanced degradation. However, M. graminis collected from small field plots and commercial sites with long-term use of fluopyram were less sensitive to fluopyram in-vitro than those from small plots and commercial sites where fluopyram had not been used. These results indicate that nematicide resistance is a likely cause of reduced fluopyram efficacy on golf-course turf in Florida.
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spelling pubmed-106469602023-11-15 Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf Kammerer, Christian L. Harmon, Philip F. Crow, William T. J Nematol Research Paper In recent years, some golf course superintendents in Florida have reported that the turf health is no longer as great, and nematode responses to fluopyram have decreased. The objective of this research was to determine if the mechanism of the reported reduced efficacy was attributable to either: i) enhanced degradation accelerating its breakdown in the soil, or ii) reduced sensitivity to the nematicide in the nematode populations. In a field experiment, soil and nematodes were collected from small plots that had been treated multiple times over four years, for only one year, or never treated. Soil and nematodes were additionally collected from commercial turf sites where either multiple applications of fluopyram had been made for numerous years, or it had never been used. Bioassay experiments found no evidence of enhanced degradation. However, M. graminis collected from small field plots and commercial sites with long-term use of fluopyram were less sensitive to fluopyram in-vitro than those from small plots and commercial sites where fluopyram had not been used. These results indicate that nematicide resistance is a likely cause of reduced fluopyram efficacy on golf-course turf in Florida. Sciendo 2023-11-15 /pmc/articles/PMC10646960/ /pubmed/38026550 http://dx.doi.org/10.2478/jofnem-2023-0048 Text en © 2023 Christian L. Kammerer et al., published by Sciendo https://creativecommons.org/licenses/by/4.0/This work is licensed under the Creative Commons Attribution 4.0 International License.
spellingShingle Research Paper
Kammerer, Christian L.
Harmon, Philip F.
Crow, William T.
Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf
title Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf
title_full Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf
title_fullStr Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf
title_full_unstemmed Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf
title_short Reduced Sensitivity to Fluopyram in Meloidogyne graminis following Long-Term Exposure in Golf Turf
title_sort reduced sensitivity to fluopyram in meloidogyne graminis following long-term exposure in golf turf
topic Research Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10646960/
https://www.ncbi.nlm.nih.gov/pubmed/38026550
http://dx.doi.org/10.2478/jofnem-2023-0048
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