bacterial diseases of tomato: 2012 - purdue …...• bacterial spot-causes lesions on leaves, stems...
TRANSCRIPT
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Bacterial Diseases of Tomato: 2012
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• Bacterial speck • Bacterial spot • Bacterial canker
Bacterial diseases of tomato
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• Bacterial speck- causes lesions on leaves, stems and fruit. Prefers cool (64-75 F), wet weather
• Bacterial spot • Bacterial canker
Bacterial diseases of tomato
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Bacterial speck of tomato
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Bacterial speck of tomato
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• Bacterial speck • Bacterial spot-causes lesions on leaves, stems and
fruit. Favored by warm (75-86 F), wet weather. • Bacterial canker
Bacterial diseases of tomato
Bacterial leaf spot of pumpkin- caused by a different microbe
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Bacterial spot of Tomato
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Bacterial spot of tomato
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Bacterial spot of Tomato
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Bacterial spot of tomato
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Bacterial spot of tomato Rain checking
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bacterial spot
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Bacterial spot of pepper
?
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Bacterial spot of Pepper
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• Bacterial speck • Bacterial spot • Bacterial canker
Bacterial diseases of tomato
Management similar
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• Resistance to fixed copper in Indiana • Copper resistance in tomato & pepper • Both copper resistant & sensitive in any year
Bacterial spot of tomato
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• Host resistance • Greenhouse • Field • ‘New’ products
Bacterial spot of Tomato-management update
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• Cultivars differ in susceptibility • Avoid past problems • Maynard, Egel and Zandstra Trials
• http://docs.lib.purdue.edu/fvtrials/10/ • http://docs.lib.purdue.edu/fvtrials/9/
Bacterial spot of tomato-Host resistance
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• Host resistance to Races 1-5 • Grow cultivars with resistance to as many races as
possible. • In 2010, bact spot race 6 found in pepper
(no host resistance)
Bacterial spot of Pepper-Host resistance
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• Purchase seed tested for disease • Good sanitation • Inspect seedlings • Apply copper/mancozeb • Apply streptomycin…e.g., Agri-mycin 17
Bacterial spot of Tomato-greenhouse
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• Fall tillage • Crop rotation • Avoid leaf wetness • Fixed copper/mancozeb-5-10 day schedule • Actigard (0.33 oz/A)…30-50 gal water/A
• increase water volume with Actigard rate • 8 Actigard applications allowed per year.
Bacterial spot of Tomato-field
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• Tanos 50DF-may help with bact diseases when applied for fungal diseases.
• Serenade Max-may help with copper resistance • Tank mix or alternate
• Agriphage-a disease of bact spot bacterium • Need to send in samples early in season • Marketed by OmniLytics
Bacterial spot of Tomato-’New’ products
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• Bacterial speck • Bacterial spot • Bacterial canker-causes plant wilt, marginal leaf
necrosis and fruit lesions.
Bacterial diseases of tomato
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bacterial canker
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bacterial canker on transplant
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bacterial canker
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bacterial canker
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Bacterial canker of tomato
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• Purchase seed tested for bacterial canker • Sanitation-greenhouse & field • Inspect seedlings • Fall tillage/crop rotation • Avoid leaf wetness • Greenhouse copper/mancozeb • Tanos 50DF
Bacterial canker of tomato
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