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Symptoms of stemphyliosis on tomato

  

  • Organs attacked :

 

Leaves Stems

 

  • Symptoms :
    • Tiny brownish spots a few millimeters in diameter, slightly angular (figures 1 to 3, 5 and 6), sometimes discreetly surrounded by a chlorotic border (figure 4). Generally, they lighten gradually and eventually take on a grayish hue as they become necrotic and dry out. Damaged tissues, dull in appearance, sometimes split (figure 7).
    • Lesions extending and confluent in humid conditions to occupy large portions of the lamina, even leading to leaf mortality.
    • More or less substantial leaf fall.
    • Rare brown lesions, rather limited and longitudinal on petioles, even on stem.
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  • Signs : fruiting bodies visible with a binocular magnifying glass on both sides of the blade: brown masses corresponding to ripening conidia carried by conidiophores.
  • Possible confusion : rare

 

  • Production areas affected :
Mayotte Reunion New Caledonia

  

Last change : 07/21/22
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Figure 1
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Figure 2
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Figure 3
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Figure 4