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Cancro-bacteriano

Clavibacter michiganensis subsp. michiganensis

Sobre

É pouco freqüente em tomateiro rasteiro, comparativamente ao tomateiro envarado, certamente em função do menor manuseio. Os sintomas de infecção sistêmica são a descoloração vascular e a murcha total ou parcial das plantas, resultando na queima dos bordos dos folíolos. A infecção localizada caracteriza-se por pequenos cancros cor de palha (Figura 1), facilmente observáveis nos pedúnculos, e manchas do tipo olho-de-perdiz nos frutos (Figura 2).

 

fonte: Embrapa

Sintomas

Wilting
Curling of leaves
Browning of leaves (often only on the one side)
Small, circular raised white spots can appear on stems and unripe fruits
Fruit can develop white spots with a brown centre (called a “bird’s eye spot”)
Areas of leaves above the 2nd – 3rd truss may show dull green and water-soaked areas which can later appeared dried out and deadened
Reddish-brown discolouration appears inside stems

Tratamento

Very hard to treat and control as is highly infectious.

Use only disease free seed stock
Remove all diseased plants at the groundline and contain in bags for disposal.
Maintain a healthy distance between other plants in the vicinity
Disinfect all stakes, ties and all other equipment that has come in contact with the diseased plant
Remove as much soil as possible, and avoid planting solanum family plants in the immediate patch for at least 3 years
Superficial infections can be treated with copper spray.