Affiliation:
1. Entomology and Nematology Department, University of Florida , Gainesville , FL 32611 Florida
Abstract
Abstract
Southern root-knot nematode (SRKN, Meloidogyne incognita) is a major pest of sweet potato, and nematicides are needed to manage this nematode. The objectives of this study were to assess the efficacy of fluazaindolizine, a new non-fumigant nematicide, in comparison with the fumigant nematicide 1,3-dichloropropene (1,3-D) and non-fumigant nematicides fluopyram and oxamyl for (1) SRKN management, (2) impacts on free-living nematodes, and (3) sweet potato yield in field trials. Among all nematicides, 1,3-D at 84 kg/ha most consistently (2 of 3 years) managed SRKN soil populations and improved yield. Fluazaindolizine at 2.24 kg/ha and fluazindolizine at 1.12 kg/ha plus oxamyl at 2.14 kg/ha managed SRKN populations and improved yield in 1 of 3 years, whereas fluazaindolizine alone at 1.12 kg/ha only decreased SRKN populations. Fluopyram at 238 g/ha did not affect SRKN or yield. Nematicide application also had non-target effects on free-living nematodes with 1,3-D reducing abundances relative to untreated most frequently (2018 and 2020), but other nematicides also reducing free-living nematode abundances in 2020. In summary, 1,3-D is the most consistent option for SRKN control on sweet potato, but fluazaindolizine, oxamyl or combinations of the two products can also be effective.
Reference44 articles.
1. Arrington, A., Kennedy, G., and Abney, M. 2016. Applying insecticides through drip irrigation to reduce wireworm (Coleoptera: Elateridae) feeding damage in sweet potato. Pest Management Science 72:1133–1140.
2. Averre, C. W., Barker, K. R., and Sorensen, K. A. 1975. Evaluation of nematicides and insecticides for sweet potatoes. Insecticide and Acaricide Tests 1:74–75.
3. Becker, J. O., Ploeg, A., and Nuñez, J. J. 2019. Multi-year field evaluation of fluorinated nematicides against Meloidogyne incognita in carrots. Plant Disease 103:2392–2396.
4. Beuzelin, J., Dittmar, P. J., Raid, R., Smith, H. A., Wells, B., Desaeger, J., Zotarelli, L., Zhang, S., Wang, Q., and Frey, C. 2021. Root crop production in Florida. Pp. 393–445 in M. L. Paret, P. J. Dittmar, S. Agehara, and H. A. Smith, ed. Vegetable production handbook of Florida, 2021–2022 edition. Gainesville: University of Florida/Institute of Food and Agricultural Sciences.
5. Carrascosa, M., Sanchez-Moreno, S., and Alonso-Prados J. L. 2015. Effects of organic and conventional pesticides on plant biomass, nematode diversity and the structure of the soil food web. Nematology 17:11–26.
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