Fungicide leaf application and incidence of kernel rot and total fumonisins in corn

Authors

  • Fabricio Eustaquio Lanza Embrapa Milho e Sorgo, Rodovia MG‑424, Km 45, CEP 35701‑970 Sete Lagoas, MG.
  • Laércio Zambolim Universidade Federal de Viçosa, Departamento de Fitopatologia, Avenida Peter Henry Rolfs, s/no, Campus Universitário, CEP 36570‑000 Viçosa, MG.
  • Rodrigo Veras da Costa Embrapa Milho e Sorgo, Rodovia MG‑424, Km 45, CEP 35701‑970 Sete Lagoas, MG.
  • Dagma Dionisia da Silva Embrapa Milho e Sorgo, Rodovia MG‑424, Km 45, CEP 35701‑970 Sete Lagoas, MG.
  • Valéria Aparecida Vieira Queiroz Embrapa Milho e Sorgo, Rodovia MG‑424, Km 45, CEP 35701‑970 Sete Lagoas, MG.
  • Douglas Ferreira Parreira Universidade Federal de Viçosa, Departamento de Fitopatologia, Avenida Peter Henry Rolfs, s/no, Campus Universitário, CEP 36570‑000 Viçosa, MG.
  • Simone Martins Mendes Embrapa Milho e Sorgo, Rodovia MG‑424, Km 45, CEP 35701‑970 Sete Lagoas, MG.
  • André Gomes Coelho Souza Universidade Federal de Viçosa, Departamento de Fitopatologia, Avenida Peter Henry Rolfs, s/no, Campus Universitário, CEP 36570‑000 Viçosa, MG.
  • Luciano Viana Cota Embrapa Milho e Sorgo, Rodovia MG‑424, Km 45, CEP 35701‑970 Sete Lagoas, MG.

DOI:

https://doi.org/10.1590/S1678-3921.pab2016.v51.20334

Keywords:

Fusarium, Zea mays, chemical control, mycotoxins, pathogenic fungi

Abstract

The objective of this work was to evaluate fungicide leaf application on the reduction of fungal pathogen incidence, kernel rot, and total fumonisins in corn (Zea mays) kernels. Three experiments were performed: one in the municipality of Luís Eduardo Magalhães, in the state of Bahia, and two in the municipality of Sete Lagoas, in the state of Minas Gerais, Brazil, during the 2010/2011 and 2011/2012 crop seasons, with planting of different commercial hybrids. The following fungicides were applied zero, one, and two times: picoxystrobin + cyproconazole, pyraclostrobin + epoxiconazole, trifloxystrobin + tebuconazole, azoxystrobin + cyproconazole, and thiophanate‑methyl. For all trials, the quantification of kernel rot incidence, the grain pathology test, and the quantification of total fumonisins were performed. No significant difference was observed for the factors fungicide and number of applications, except for grain yield, in all trials. These results show the ineffectiveness of fungicide applications in reducing fungi incidence, kernel rot, and levels of total fumonisins in corn kernels.

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Published

2016-08-03

How to Cite

Lanza, F. E., Zambolim, L., Costa, R. V. da, Silva, D. D. da, Queiroz, V. A. V., Parreira, D. F., … Cota, L. V. (2016). Fungicide leaf application and incidence of kernel rot and total fumonisins in corn. Pesquisa Agropecuaria Brasileira, 51(5), 638–646. https://doi.org/10.1590/S1678-3921.pab2016.v51.20334

Issue

v.51, n.5, maio 2016: Número Temático Pesquisa, Desenvolvimento e Inovações em Face de Ameaças Sanitárias para a Agropecuária

Section

DISEASES CONTROL