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Plant Health

Ralstonia

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Wilting and yellowing symptoms of Ralstonia solanacearum race 3 biovar 2
seen on zonal geraniums,
Pelargonium x hortorum
(Click on image for larger view)
early wilting symptoms
 Early wilting symptoms
Image: The Wisconsin Department of Agriculture, Trade
and Consumer Protection
advanced wilting symptoms
 More advance wilting and abnormal leaf yellowing symptoms (chlorosis)
Image: The Wisconsin Department of Agriculture, Trade and Consumer Protection
yellowing symptoms
 Abnormal yellowing symptoms
Image: The Plant Disease Diagnostics Clinic, University of Wisconsin-Madison/Extension
geraniums showing wilt
 Group of geraniums showing wilting symptoms
Image: The Wisconsin Department of Agriculture, Trade and Consumer Protection
wilting cherry rose variety
 Wilting and mortality of Americana Cherry Rose variety
File photo
yellowing symptom on geranium
 Yellowing symptom (chlorosis) of Americana Pink II variety
File photo
wilting symptoms on geraniums
 Wilting and mortality (necrosis) of Bright Red variety
File photo
wilting, chlorosis and necrosis on geranium
 Wilting, chlorosis and necrosis due to Ralstonia solanacearum infection of geranium
File photo
One plant has been killed by Ralstonia solanacearum and another is showing early wilt symptoms in this 10-inch basket
File photo
unrooted cutting showing necrosis
 These unrooted cuttings show necrosis of the lower leaves and black stem necrosis due to infection by Ralstonia solanacearum
Image: Margery Daughtrey, Cornell University
geranium leaf showing wilting
 A geranium with several leaves showing wilting with associated chlorosis and necrosis due to Ralstonia solanacearum
Image: Margery Daughtrey, Cornell University
chlorosis and necrosis on geranium leaf
 A closeup of the chlorosis and necrosis that develop in geranium leaves wilting from Ralstonia solanacearum infection
Image: Margery Daughtrey, Cornell University
   
Symptoms of Bacterial Blight caused
by Xanthomonas pelargonii on geranium,
Pelargonium spp.
bacterial blight wilting
 Wilting symptons caused by Bacterial Blight, Xanthomonas pelargonii, are indistinguishable from Ralstonia solanacearum wilting.
Image: Margery Daughtrey, Cornell University
baterial blight
 Bacterial Blight, Xanthomonas pelargonii, also causes characteristic spotting of leaf tissue
Image: Margery Daughtrey, Cornell University

 

 

 

 

 

Last Modified: January 31, 2007