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Symptoms of Myrothecium on Okra

  

  • Organs attacked :
Leaves

 

  • Symptoms
    • Wet to greasy circular lesions at first (figure 1).
    • They expand and take on a dark brown hue, and gradually become necrotic; a more or less marked and diffuse yellow halo surrounds them.
    • Degraded fabrics dry out, split and eventually fall off; the blade is more or less perforated (figure 2).
  • Signs : presence of greyish to black sporiferous pads: sporodochia. These structures are made up of numerous phialides which form at their end cylindrical conidia, hyaline to slightly olive-coloured.
  • Possible confusion : Sigatoka

 

  • Production areas affected :
Guyana

 

  •  Myrothecium spp. reported on okra :
Last change : 07/08/22
Myrothecium-Gombo1
Figure 1
Myrothecium-Gombo2
Figure 2
Myrothecium-Gombo1
Figure 3
Myrothecium_Gombo2
Figure 4
Myrothecium-Gombo3
Figure 5