<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Belonolaimus longicaudatus</italic> (sting nematode) is an important pest in Florida potato production and is managed primarily by fumigation using 1,3-dichloropropene (1,3-D). Other effective nematicides are needed for more flexibility in managing this pest. The objective of this study was to evaluate fluensulfone, metam potassium, and mixtures of the two products, relative to 1,3-D and untreated control, for efficacy at managing sting nematode, and for non-target effects on free-living nematodes in potato. To test this objective, a small-plot field experiment was conducted in northeast Florida in 2020 and repeated in 2021. Metam potassium fumigation (390 kg a.i./treated ha)—with or without fluensulfone—managed sting nematode soil abundances but was phytotoxic to potato. Strategies that mitigate metam potassium phytotoxicity, such as reduced application rates, are needed before efficacy of metam potassium in this system can be determined. As a preplant soil spray, fluensulfone alone (403 g a.i./treated ha) did not manage sting nematode abundances and had an inconsistent effect on yield. Fumigation with 1,3-D (88.3 kg a.i./treated ha) was the only treatment that consistently managed sting nematode and increased potato yield. Nematicides did not consistently affect free-living nematodes.</p>
</abstract>

Belonolaimus longicaudatus (sting nematode) is an important pest in Florida potato production and is managed primarily by fumigation using 1,3-dichloropropene (1,3-D). Other effective nematicides are needed for more flexibility in managing this pest. The objective of this study was to evaluate fluensulfone, metam potassium, and mixtures of the two products, relative to 1,3-D and untreated control, for efficacy at managing sting nematode, and for non-target effects on free-living nematodes in potato. To test this objective, a small-plot field experiment was conducted in northeast Florida in 2020 and repeated in 2021. Metam potassium fumigation (390 kg a.i./treated ha)—with or without fluensulfone—managed sting nematode soil abundances but was phytotoxic to potato. Strategies that mitigate metam potassium phytotoxicity, such as reduced application rates, are needed before efficacy of metam potassium in this system can be determined. As a preplant soil spray, fluensulfone alone (403 g a.i./treated ha) did not manage sting nematode abundances and had an inconsistent effect on yield. Fumigation with 1,3-D (88.3 kg a.i./treated ha) was the only treatment that consistently managed sting nematode and increased potato yield. Nematicides did not consistently affect free-living nematodes.

<italic>Belonolaimus longicaudatus</italic> management using metam potassium and fluensulfone in potato

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

 management using metam potassium and fluensulfone in potato

Belonolaimus longicaudatus (sting nematode) is an important pest in Florida potato production and is managed primarily by fumigation using 1,3-dichloropropene...

Belonolaimus longicaudatus management using metam potassium and fluensulfone in potato

Article Category: Research Paper

Published Online: Jul 06, 2023

Page range: -

Received: Mar 23, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0028

Keywords
1,3-Dichloropropene, fluensulfone, fumigant, metam potassium, nematicide, nematode community, potato, sting nematode

© 2023 Zane J. Grabau et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Belonolaimus longicaudatus management using metam potassium and fluensulfone in potato

Article Category: Research Paper

Published Online: Jul 06, 2023

Page range: -

Received: Mar 23, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0028

Keywords1,3-Dichloropropene, fluensulfone, fumigant, metam potassium, nematicide, nematode community, potato, sting nematode

© 2023 Zane J. Grabau et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
1,3-Dichloropropene, fluensulfone, fumigant, metam potassium, nematicide, nematode community, potato, sting nematode