COMBINATION OF FUNGICIDES AND RESISTANCE INDUCER FOR THE MANAGEMENT OF ASIAN SOYBEAN RUST
DOI:
https://doi.org/10.32480/rscp.2025.30.1.9410Keywords:
Glycine max L. Merril, Phakopsora pachyrhizi, mancozeb, chemical controlAbstract
Between September 2018 and February 2019, an experiment was conducted in Pirapó, Paraguay, to assess the effectiveness of site-specific fungicides (Prothioconazole 17.5% + Trifloxystrobin 15%) and multisite fungicides (Mancozeb 80%), along with a resistance inducer (copper, manganese, zinc, boron, and amino acids), at different phenological stages of soybean to control rust and improve yield. A randomized complete block design was used with 13 treatments and four replications. The treatments varied in the combination and timing of product application. The severity of rust, control efficacy, defoliation, number of pods per plant, 100-grain weight, and yield were evaluated. The site-specific fungicides reduced the severity of rust at all phenological stages, whether applied alone or in combination with other products. No additional benefits were found by mixing multisite fungicides with resistance inducers. Treatments with only Mancozeb or inducer showed greater defoliation. Treatments T6 and T10 presented the highest number of pods per plant, though without statistically significant differences compared to other effective treatments. There were no differences in 100-grain weight, and the highest yields were observed in treatments T5 and T7.
Metrics
Downloads
References
1. Terán-Vargas AP. Roya asiática de la soya Phakopsora pachyrhizi Sydow. México, D.F.: SAGARPA/SENASICA; 2013.
2. Pioli R. Roya de la soja. Monitoreo para detección y diagnóstico a campo. Argentina: Sistema de información técnica; 2005. Disponible en: http://www.fcagr.unr.edu.ar/Extension/Informes%20tecnicos/roya1.htm
3. Yorinori JT, Paiva WM, Frederick RD, Costamilan LM, Bertagnolli PF, Hartman GE, et al. Epidemics of soybean rust (phakopsora pachyrhizi) in brazil and paraguay from 2001 to 2003. Plant Disease. 2005;89(6):675-7. Disponible en: https://apsjournals.apsnet.org/doi/10.1094/PD-89-0675
4. Enciso Maldonado GA, Sanabria-Velázquez AD, Schlickmann Tank JA, Maidana Ojeda M. Una carrera contra la pérdida de la eficacia de fungicidas: 20 años de manejo de la roya asiática de la soja en Paraguay. IEUNA. 2021;2(12-2). Disponible en: https://revistascientificas.una.py/index.php/rdgic/article/view/1753
5. Langenbach C, Campe R, Beyer SF, Mueller AN, Conrath U. Fighting asian soybean rust. Front Plant Sci. 2016;7. Disponible en: https://doi.org/10.3389/fpls.2016.00797
6. Caballero-Mairesse GG, Mendes FH, Arrua AA, Lopez-Nicora HD, Enciso-Maldonado GA. Percepción de agricultores sobre el manejo de enfermedades fúngicas de la soja (Glycine max x (L.) Merr.) en Paraguay. Agron Mesoam. 2024. Disponible en: https://doi.org/10.15517/am.2024.55193
7. Carmona M. Roya asiática de la soja. Monitoreo, fungicidas y su relación con la calidad de aplicación y éxito de control. Una visión desde la Fitopatología. Argentina: Universidad de Buenos Aires; 2021. Disponible en: https://www.agro.uba.ar/sites/default/files/documentos/publicaciones/tecnologiaaplicacion.pdf
8. Marchuk Larrea CN, Benítez Rodas GA, Sandoval W, Arrúa P, Lopez H, Guillermo E, et al. Trichoderma as biocontrol agent - in focus. Rev Soc cient Parag. 2024;29(1):137-71. Disponible en: https://doi.org/10.32480/rscp.2024.29.1.137
9. Mendoza-Duarte MJ, Melgarejo-Arrua M, Schlickmann-Tank JA, Caballero-Mairesse GG, Enciso-Maldonado GA. Efecto de mezclas de fungicidas sitio-específicos combinados con mancozeb en el control roya de la soja en el noreste de Paraguay. Summa phytopathol. 2023;49:e264911.https://doi.org/10.1590/0100-5405/264911
10. López-Gorostiaga O, González Erico E, Llamas PA de, Molina AS, Franco E, García S, et al. Mapa de reconocimiento de suelo de la región oriental del Paraguay. Asunción: Williams & Haintz; 1995.
11. Godoy CV, Koga LJ, Canteri MG. Diagrammatic scale for assessment of soybean rust severity. Fitopatol bras. 2006;31(1):63-8.https://doi.org/10.1590/S0100-41582006000100011
12. Enciso-Maldonado GA, Maidana-Ojeda M, Schlickmann-Tank JA, Montoya-García CO, Páez-Ranoni HJ, Fernández-Riquelme F, et al. Fungicidas sitio-específicos combinados con Mancozeb para el control de la roya asiática de la soya. Rev Mex Fitopatol. 2019;37(1):1903-3. http://dx.doi.org/10.18781/R.MEX.FIT.1903-3
13. Hirano M, Hikishima M, Silva AJD, Xavier SA, Canteri MG. Validação de escala diagramática para estimativa de desfolha provocada pela ferrugem asiática em soja. Summa Phytopathologica. 2010;36(3):248-50. https://doi.org/10.1590/S0100-54052010000300012
14. Di Rienzo JA, Casanoves F, Balzarini MG, Gonzalez L, Tablada M, Robledo CW. InfoStat, versión 2021. Grupo InfoStat, FCA. Argentina: Universidad Nacional de Córdoba. http://www.infostat.com.ar
15. Enciso-Maldonado GA, Núñez-Ramírez RA, Montoya-García CO, Schlickmann-Tank JA, Maidana-Ojeda M, Mendoza-Duarte MJ, et al. Efecto de la época de siembra y diferentes programas aplicación de fungicidas sobre la severidad de la roya asiática de la soja. Investigaciones y Estudios-UNA. 2022;13(2):37-48. https://doi.org/10.47133/IEUNA22204b
16. Neto ALV, de Souza CMA, Bertoncello BF, Júnior IDS, da Silva Piletti LMM, Rigotte MR. Fungicide management in the Asian soybean rust. Rev Agrogeoambiental. 2021;13(1). https://doi.org/10.18406/2316-1817v13n120211535
17. Maidana-Ojeda M, Vargas-Britez S, Fin-Mieres MB, Enciso-Maldonado GA. Influencia de la relación fuente/demanda sobre la senescencia retardada del tallo de soya. Rev fitotecnia mexicana. 2021;44(3):465-70. https://doi.org/10.35196/rfm.2021.3.465
18. Carrera CS, Rosas MB, Gontijo Mandarino JM, Leite RS, Raspa F, Fava F, et al. Partial and total defoliation during the filling period affected grain industrial and nutraceutical quality in soybean. J Sci Food Agric. 2022;102(10):4109-20. https://doi.org/10.1002/jsfa.11760
19. Danelli ALD, Reis EM, Boaretto C. Critical-point model to estimate yield loss caused by Asian soybean rust. Summa phytopathol. 2015;41(4):262-9. https://doi.org/10.1590/0100-5405/2003
20. Gabardo G, Pria MD, Silva HLD, Harms MG. Alternative products on Asian soybean rust control and their influence on defoliation, productivity and yield components. Summa phytopathol. 2020;46(2):98-104. https://doi.org/10.1590/0100-5405/231561
21. Kim YU, Choi DH, Ban HY, Seo BS, Kim J, Lee BW. Temporal patterns of flowering and pod set of determinate soybean in response to high temperature. Agronomy. 2020;10(3):414. https://doi.org/10.3390/agronomy10030414
22. He J, Jin Y, Turner NC, Li FM. Irrigation during flowering improves subsoil water uptake and grain yield in rainfed soybean. Agronomy. 2020;10(1):120. https://doi.org/10.3390/agronomy10010120
23. Enciso-Maldonado G, Sanabria-Velázquez A, Fernández-Riquelme F, Díaz-Nájera J, Fernández-Salinas P, Lugo-Pereira W. Soybean yield components at different densities and planting seasons in Paraguay. Agronomía Colombiana. 2021;39(1):12-21. https://doi.org/10.15446/agron.colomb.v39n1.88979
24. Mendoza-Duarte MJ, Zarza-Cabrera AC, Arias-Ruiz-Diaz OR, Arrua AA, Fernández-Gamarra MA, Lopez-Nicora HD, Enciso-Maldonado GA. Sequential application of fungicides with different modes of action for the control of soybean diseases in Canindeyú, Paraguay. AgriScientia. 2024;41(2):37-49. https://doi.org/10.31047/1668.298x.v41.n2.44095
25. Smutná P, Tokatlidis IS. Testing Taylor’s Power Law association of winter wheat variation with mean yield at two contrasting soils. Eur J Agron. 2021;126:126268. https://doi.org/10.1016/j.eja.2021.126268
26. Nardino M, Olivoto T, Barros WS, Carvalho CGD, Signorini VS, Mezzomo HC, Casagrande CR. Meta-analysis of the experimental coefficient of variation in wheat using the Bayesian and Frequentist approaches. Scientia Agricola. 2022;80:e20210190. https://doi.org/10.1590/1678-992X-2021-0190
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Revista de la Sociedad Científica del Paraguay
This work is licensed under a Creative Commons Attribution 4.0 International License.
El/los autores autorizan a la Revista de la Sociedad Científica del Paraguay a publicar y difundir el articulo del cual son autores, por los medios que considere apropiado.
