DOSE-RESPONSE EFFECT OF Pochonia chlamydosporia AGAINST Meloidogyne incognita ON CARROT UNDER FIELD CONDITIONS

Authors

  • Amanda Ferreira Bontempo Institute of Agrarian Sciences, Universidade Federal de Viçosa, Rio Paranaíba, MG.
  • Everaldo Antônio Lopes Institute of Agrarian Sciences, Universidade Federal de Viçosa, Rio Paranaíba, MG.
  • Rafael Henrique Fernandes Institute of Agrarian Sciences, Universidade Federal de Viçosa, Rio Paranaíba, MG.
  • Leandro Grassi de Freitas Departament of Plant Pathology, Universidade Federal de Viçosa, Viçosa, MG.
  • Rosangela Dallemole-Giaretta Departament of Agrarian Sciences, Universidade Tecnológica Federal do Paraná, Pato Branco, PR.

DOI:

https://doi.org/10.1590/1983-21252017v30n129rc

Keywords:

Biological control. Daucus carota. Nematophagous fungus. Root-knot nematode.

Abstract

The application of a bionematicide based on chlamydospores of Pochonia chlamydosporia (Pc-10) can be an important strategy for reducing the damage caused by Meloidogyne incognita on carrot. Based on this perspective, the nematicidal effects of 0, 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 kg ha-1 of Pc-10 were evaluated on carrot cv. Juliana under field conditions. Carrot yield and nematode population were influenced by increasing doses of Pc-10. The application of 3.0 kg ha-1 of Pc-10 increased the marketable production of carrot roots by 41.7% compared to the untreated control, whereas the production of unmarketable roots and the nematode population in the soil were reduced by 48.7% and 61.4%. The application of 3.0 kg ha-1 of Pc-10 reduces M. incognita population and improves carrot quality and yield.

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Published

02-12-2016

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Section

Technical Note