Evaluation of the in vitro compatibility of microorganisms (Bacillus subtilis, Pseudomonas fluorescens and Trichoderma atroviride) with commercial fungicides for sustainable peanut production

Authors

  • Dean Fernandez ForBio, Argentina. https://orcid.org/0000-0003-4345-9877
  • Matias Torassa Universidad Nacional de Córdoba, Facultad de Ciencias Agropecuarias, Centro de Transferencia Calidad Agroalimentaria, Córdoba.
  • Maria Alejandra Pérez Universidad Nacional de Córdoba, Facultad de Ciencias Agropecuarias, Centro de Transferencia Calidad Agroalimentaria, Córdoba. https://orcid.org/0000-0001-8400-5084

DOI:

https://doi.org/10.52755/sas.v2iedesp2.112

Keywords:

Biological control, Combined treatments, Sanitary quality

Abstract

The application of fungicides on the peanut seed is a necessity in the sowing, however the combined application with biologicals could reduce the effects of the use of agrochemicals, favoring the quality of the grain as food. The objective of this work was to evaluate the in vitro compatibility of microorganisms (Bacillus subtilis, Pseudomonas fluorescens and Trichoderma atroviride) with commercial fungicides for the sustainable production of peanuts. The compatibility tests were carried out in the Laboratory of the Agrifood Quality Transfer Center (FCA UNC). Three combinations of commercial fungicides available in the peanut sector (F1, F2, F3) were evaluated, in different doses (0, 30, 50, 100 and 1000 mg.l-1). In petri dishes with GPA medium with each fungicide, B. subtilis, P. fluorescens and T. atroviride were seeded, and they were kept in chambers with controlled conditions. At 7 days from sowing, the bacterial growth was evaluated according to the compatibility scale and for Trichoderma the percent inhibition of radial growth (PIRG) was calculated. The design was completely randomized; for each biological, three repetitions were evaluated for each fungicide and dose. The entire test was repeated three times. The data were subjected to analysis of variance and the mean PIRG values "‹"‹were compared by Tukey (p<0.05). The results showed a differential effect of fungicides on biological ones. F1 (Thiabendazole + Fludioxonil + Metalaxyl-M + Azoxystrobin) can be combined with P. fluorescens in all doses and B. subtilis in doses not exceeding 50 mg.l-1. F2 (Ipconazole + Metalaxil) and F3 (Ipconazole + Metalaxil M + Carboxin) can be applied with P. fluorescens even with high concentrations. F3 can be combined with T. atroviride up to 100 mg.l-1. The correct combination of fungicides and biologicals will effectively contribute to the sustainability of the peanut production system.

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Author Biographies

Dean Fernandez, ForBio, Argentina.

Microbiólogo, Tesista Doctoral. Responsable I+D+I ForBio, Argentina. E-mail: mic.defer@gmail.com.

Matias Torassa, Universidad Nacional de Córdoba, Facultad de Ciencias Agropecuarias, Centro de Transferencia Calidad Agroalimentaria, Córdoba.

Ingeniero Agrónomo, Universidad Nacional de CoÌrdoba, Facultad de Ciencias Agropecuarias, Centro de Transferencia Calidad Agroalimentaria, CoÌrdoba. E-mail: mtorassa7@gmail.com.

Maria Alejandra Pérez, Universidad Nacional de Córdoba, Facultad de Ciencias Agropecuarias, Centro de Transferencia Calidad Agroalimentaria, Córdoba.

Doctora en Ciencias Universidad Federal de Pelotas Brasil. Universidad Nacional de CoÌrdoba, Facultad de Ciencias Agropecuarias, Centro de Transferencia Calidad Agroalimentaria, CoÌrdoba. E-mail: maperez@agro.unc.edu.ar.

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Published

2021-09-30

How to Cite

Fernandez, D., Torassa, M., & Pérez, M. A. . (2021). Evaluation of the in vitro compatibility of microorganisms (Bacillus subtilis, Pseudomonas fluorescens and Trichoderma atroviride) with commercial fungicides for sustainable peanut production. South American Sciences, 2(edesp2), e21112. https://doi.org/10.52755/sas.v2iedesp2.112

Issue

Vol. 2 No. edesp2 (2021): XVIII Encontro Sobre a Cultura do Amendoim - Artigos Originais

Section

Artigos Originais (Ciências Agrárias)

License

Copyright (c) 2021 Dean Fernandez, Matias Torassa, Maria Alejandra Pérez

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This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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