ENCAPSULATED BAITS CONTAINING ZINC SULFATE AND Trichoderma harzianum REDUCE FUNGAL GARDEN IN Atta sexdens COLONIES

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Authors

  • Daniella Gonçalves da Silva Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.
  • Aldemir Lucena Júnior Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.
  • Renato de Almeida Sarmento Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.
  • Cynthia Lhourrana Santos Silva Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.
  • Amanda Caroline Teles Tenório Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.
  • Danival José de Souza Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.
  • Márcio Silva Melo Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

DOI:

https://doi.org/10.32404/rean.v7i3.5064

Abstract

The aim of the study was to test the effects of various concentrations of zinc sulfate (ZnSO4) on the radial growth of Trichoderma harzianum and Leucoagaricus gongylophorus in Petri dishes. In addition, we investigated the acceptance of baits containing live propagules of the encapsulated T. harzianum fungus and baits containing ZnSO4 by foraging leafcutter worker ants, A. sexdens, as well as their effects on the colonies of these ants. For the in vitro test, the design was completely randomized using ten replicates of a 2 × 7 factorial scheme: two species of fungi (T. harzianum and L. gongylophorus) and seven concentrations of ZnSO4. For bait acceptance tests, four treatments were used: baits without the mycelium and ZnSO4 (T1, control), baits containing encapsulated T. harzianum mycelium (T2), baits containing ZnSO4 (T3), and baits containing zinc sulfate and the encapsulated T. harzianum (T4). Each treatment was tested in duplicates using eight colonies. In the in vitro test, a ZnSO4 concentration of 0.25 g/L was sufficient to completely inhibit the development of L. gongylophorus without affecting the development of T. harzianum. In the bait acceptance test, the workers accepted ~55% of the bait combination of ZnSO4 and T. harzianum. This suggests the potential of treatment T4 in controlling leafcutter ants. Moreover, treatment T4 is environmentally friendly. 

Author Biographies

Daniella Gonçalves da Silva, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Programa de Pós-graduação em Ciências Florestais e Ambientais.

Aldemir Lucena Júnior, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Programa de Pós-graduação em Ciências Florestais e Ambientais.

Renato de Almeida Sarmento, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Produção Vegetal/Fitossanidade/Entomologia

Cynthia Lhourrana Santos Silva, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Programa de Pós-graduação em Produção Vegetal

Amanda Caroline Teles Tenório, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Engenharia de Bioprocessos e Biotecnologia

Danival José de Souza, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Produção Vegetal/Fitossanidade (Entomologia)

Márcio Silva Melo, Universidade Federal do Tocantins, Campus de Gurupi, Gurupi, Tocantins, Brasil.

Programa de Pós-graduação em Produção Vegetal

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Published

2020-09-09

How to Cite

da Silva, D. G., Lucena Júnior, A., Sarmento, R. de A., Santos Silva, C. L., Teles Tenório, A. C., de Souza, D. J., & Melo, M. S. (2020). ENCAPSULATED BAITS CONTAINING ZINC SULFATE AND Trichoderma harzianum REDUCE FUNGAL GARDEN IN Atta sexdens COLONIES. REVISTA DE AGRICULTURA NEOTROPICAL, 7(3), 46–52. https://doi.org/10.32404/rean.v7i3.5064

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