Bacterial Diseases of Tomato: 2012
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1 Bacterial Diseases of Tomato: 2012
2 Bacterial diseases of tomato Bacterial speck Bacterial spot Bacterial canker
3 Bacterial diseases of tomato Bacterial speck- causes lesions on leaves, stems and fruit. Prefers cool (64-75 F), wet weather Bacterial spot Bacterial canker
4 Bacterial speck of tomato
5 Bacterial speck of tomato
6 Bacterial diseases of tomato Bacterial speck Bacterial spot-causes lesions on leaves, stems and fruit. Favored by warm (75-86 F), wet weather. Bacterial canker Bacterial leaf spot of pumpkincaused by a different microbe
7 Bacterial spot of Tomato
8 Bacterial spot of tomato
9 Bacterial spot of Tomato
10 Bacterial spot of tomato
11 Bacterial spot of tomato Rain checking
12 bacterial spot
13 Usually, bacterial spot will not spread from tomato to pepper or from pepper to tomato. Bacterial spot of pepper?
14 Bacterial spot of Pepper
15 Bacterial diseases of tomato Bacterial speck Bacterial spot Bacterial canker Management similar
16 Bacterial spot of tomato Strains of the bacterial spot microbe resistance to fixed copper in Indiana Copper resistance in tomato & pepper strains Both copper resistant & sensitive strains in any year
17 Bacterial spot of tomato-host resistance Cultivars differ in susceptibility Avoid past problems Maynard, Egel and Zandstra Trials
18 Bacterial spot of pepper-host resistance 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)
19 Bacterial spot of tomato-greenhouse Purchase seed tested for disease Good sanitation Inspect seedlings Apply copper/mancozeb (not for peppers) Apply streptomycin e.g., Agri-mycin 17
20 Bacterial spot of Tomato-field Fall tillage Crop rotation Avoid leaf wetness Fixed copper/mancozeb-5-10 day schedule Actigard (0.33 oz/a) gal water/a increase water volume with Actigard rate 8 Actigard applications allowed per year.
21 Bacterial spot of Tomato- New products 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
22 Bacterial diseases of tomato Bacterial speck Bacterial spot Bacterial canker-causes plant wilt, marginal leaf necrosis and fruit lesions.
23 bacterial canker
24 bacterial canker on transplant Photo-Mary Hausbeck
25 bacterial canker
26 bacterial canker
27 Bacterial canker of tomato
28 Bacterial canker of tomato Purchase seed tested for bacterial canker Sanitation-greenhouse & field Inspect seedlings Fall tillage/crop rotation Avoid leaf wetness Greenhouse copper/mancozeb Tanos 50DF
29
30 Bacterial Diseases of Pumpkin: 2012
31 XANTHOMONAS BACTERIAL LEAF SPOT OSU: Jim Jasinski
32 ANGULAR LEAF SPOT OF CUCURBITS Cucumber most susceptible but all cucurbits may be affected Favored by moderate temperatures and high moisture OSU: Jim Jasinski
33 Bacterial spot pumpkin
34 Bacterial spot pumpkin
35 OSU PUMPKIN ALS/BACTERIAL SPOT TRAIL Two cultivars, susceptible Charmed (A & C) & tolerant Solid Gold (RU). Direct seeded 6 June in rolled winter rye. Four replications Inoculated with ALS strain. ALS symptoms confirmed on leaves, but only bacterial spot symptoms observed on fruit. Labeled products applied: Actigard, Kocide 3000, Serenade Max, Oxidate. (9 app s, 27 June-2 Sept) Non-labeled product applied: Kasumin 2L Products applied 7 day intervals. OSU: Jim Jasinski
36 RESISTANCE TO BACTERIAL SPOT- PUMPKIN Charme d Solid Gold Data: Jim Jasinski et al. OSU
37 EFFECT OF ANTIBACTERIAL PRODUCTS ON BACTERIAL SPOT OF PUMPKIN OSU: Jim Jasinski Incidence refers to % infection (Y or N) found in the plot (all fruit examined) Severity refers to % infection found on 10 fruit randomly sampled per plot 9 weekly applications from June 27 to September 2 Data provided by Jim Jasinski, OSU
38 BACTERIAL SPOT/ALS OF PUMPKIN MANAGEMENT Avoid problem cultivars Fall tillage/crop rotation Monitor seed source Greenhouse/field santiation Fixed copper applications/mancozeb Consider Actigard applications
39 BACTERIAL SPOT OF PUMPKINS Apply fixed copper products At onset of symptoms When fruit softball sized Every 7-14 days With Dithane or Manzate
40 NEW PRODUCT FOR PUMPKINS Actigard 50 WG Diseases labeled for include: Downy mildew Powdery mildew Bacterial spot
41 ACTIGARD 50 WG Induce plant defenses Actigard-avoid stressed plants (yield drag) Actigard is not in Purdue recommendations
42
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