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

<p>Reniform nematode (<italic>Rotylenchulus reniformis</italic>) is a major pest of sweetpotato in many production regions in Southern United States. Applying soil fumigants and non-fumigant nematicides are the primary management strategies available to growers. This study compared the relative efficacy of nematicides (1,3-dichloropropene, fluopyram, oxamyl, fluazaindolizine, aldicarb, Majestene, and fluensulfone) for management of reniform nematode on sweetpotato. Fumigating soil with 1,3-dichloropropene consistently reduced soil population densities of reniform nematode at the time of planting in both trial years (31 – 36% reduction relative to the untreated control); however, the duration of suppression varied greatly by growing season. A similar trend was observed with fluopyram (56 – 67% reduction) and aldicarb (63 – 65% reduction), which provided season-long suppression of reniform nematode population development in 2021 but had no impact in 2022. In 2021, nematicide application had no impact on yield; however, in 2022, oxamyl and aldicarb increased the yield of U.S.#1 grade sweetpotato. Overall, soil fumigation with 1,3-dichloropropene and in-furrow application of fluopyram and aldicarb provided the most consistent suppression of reniform nematode on sweetpotato.</p>
</abstract>

Reniform nematode (Rotylenchulus reniformis) is a major pest of sweetpotato in many production regions in Southern United States. Applying soil fumigants and non-fumigant nematicides are the primary management strategies available to growers. This study compared the relative efficacy of nematicides (1,3-dichloropropene, fluopyram, oxamyl, fluazaindolizine, aldicarb, Majestene, and fluensulfone) for management of reniform nematode on sweetpotato. Fumigating soil with 1,3-dichloropropene consistently reduced soil population densities of reniform nematode at the time of planting in both trial years (31 – 36% reduction relative to the untreated control); however, the duration of suppression varied greatly by growing season. A similar trend was observed with fluopyram (56 – 67% reduction) and aldicarb (63 – 65% reduction), which provided season-long suppression of reniform nematode population development in 2021 but had no impact in 2022. In 2021, nematicide application had no impact on yield; however, in 2022, oxamyl and aldicarb increased the yield of U.S.#1 grade sweetpotato. Overall, soil fumigation with 1,3-dichloropropene and in-furrow application of fluopyram and aldicarb provided the most consistent suppression of reniform nematode on sweetpotato.

Evaluation of fumigant and non-fumigant nematicides for management of <italic>Rotylenchulus reniformis</italic> on sweetpotato

LSU AgCenter, Department of Plant Pathology and Crop Physiology

Journal of Nematology

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

Evaluation of fumigant and non-fumigant nematicides for management of  on sweetpotato

Reniform nematode (Rotylenchulus reniformis) is a major pest of sweetpotato in many production regions in Southern United States. Applying soil fumigants and...

Evaluation of fumigant and non-fumigant nematicides for management of Rotylenchulus reniformis on sweetpotato

Article Category: Research Paper

Published Online: Jan 24, 2023

Page range: -

Received: Jun 28, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0061

Keywords
sweetpotato, reniform nematode, management, non-fumigant nematicides

© 2023 Tristan T. Watson et al., published by Sciendo

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

Evaluation of fumigant and non-fumigant nematicides for management of Rotylenchulus reniformis on sweetpotato

Article Category: Research Paper

Published Online: Jan 24, 2023

Page range: -

Received: Jun 28, 2023

DOI: https://doi.org/10.2478/jofnem-2023-0061

Keywordssweetpotato, reniform nematode, management, non-fumigant nematicides

© 2023 Tristan T. Watson et al., published by Sciendo

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

Keywords
sweetpotato, reniform nematode, management, non-fumigant nematicides