Severity and control of asian rust in soybean crop

DOI: 10.52945/rac.v17i3.1011
Published 2004-07-28

Authors

  • Gilson José Marcinichen Gallotti
    Epagri/Estação Experimental de Canoinhas
  • André Nunes Loula Torres
    Epagri/Estação Experimental de Canoinhas
  • Alvadi Antonio Balbinot Junior
    Epagri/Estação Experimental de Canoinhas
  • Rogério Luiz Backes
    Epagri/Estação Experimental de Canoinhas

Abstract

Asian rust, caused by Phakopsora pachyrhizi Sydow & Syd, was identified during the growing season
2000/01, in Paraná State, Brazil. Nowadays, it is spread in large extent on the brazilian territory. This disease has caused high losses in soybean yield, specially in early infection. In this work it was evaluated the disease severity,
yield losses and efficiency of fungicides. The fungicides trifloxistrobina + ciproconazol + mineral oil Assist (56,25 + 24g i.a./ha + 0,125% v/v) applied at R5.1 phenological stage and tebuconazole (120g i.a./ha) applied at R5.3 stage, were efficient to control asian rust.

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Keywords

  • Glycine max
  • fungicides
  • epidemiology
  • yield
  • yield components