Help with ID...

Dork Fish · June 30, 2015

I found this on one of my plants. I'm having a hard time pin pointing this one...

tam91 · June 30, 2015

Septoria leaf spot?
http://www.longislandhort.cornell.ed...ria_tomato.htm

I had Septoria one year, had to use Mancozeb to control.

SharonRossy · June 30, 2015

Possibly bacterial spot or speck?

Patihum · June 30, 2015

I'd say bacterial spot.

Dork Fish · July 2, 2015

Thanks

What's the best thing to use if bacterial?

jmsieglaff · July 2, 2015

Are the spots on the leaves only or the fruits too? If it is leaves only I think it is septoria leaf spot (fungal)--which would be plausible given how wet June as been in Illinois.

Dork Fish · July 3, 2015

I don't have any fruit yet

jmsieglaff · July 3, 2015

I still think it looks septoria. Perhaps a few others will chime in. Remove all leaves with spots and consider treating with something with anti-fungal properties.

Are the spots all over the plant or more on the older (lower) growth?

tam91 · July 3, 2015

Septoria, Daconil maybe. I ended up having to use Mancozeb when I got septoria in the past. I've seen articles mentioning copper for bacterial spot, or mancozeb + copper.

Dork Fish · July 3, 2015

Lower growth.

Dork Fish · July 3, 2015

Thanks Tracy

jmsieglaff · July 3, 2015

Quote:

Originally Posted by Dork Fish

Lower growth.

I'll double down on the septoria diagnosis then. I battle it every year but it can be treated to a point you'll get tomatoes still. Hopefully the weather dries out some.

digsdirt · July 3, 2015

To me the spots appear to be sunken in the pics rather than raised as normally seen with Septoria. Plus there is no yellow, also normally seen with Septoria but not with Bacterial Spot. So I'll get on the Bacterial Spot Bandwagon. And they appear to be the classic dark, blackdot, water soaked, greasy looking lesions first arising on older foliage.

Can't say about your location but in my region the extension agents and Master Gardener's programs that are doing consults are reporting that bacterial diseases are far, far more common this year (due to the unusual weather - warm and wet vs. cool and wet with fungus) than are the normally much more common fungal diseases.

Treatment besides removing all the affected foilage ASAP and disposing of it well away from the garden are copper-based fungicides or, if available in your area, bacteriophages such as AgriPhage.

Hope this helps.

Dave

efisakov · July 3, 2015

Organic treatments that I use:

http://www.planetnatural.com/pest-pr...ial-leaf-spot/

ginger2778 · July 3, 2015

Quote:

Originally Posted by Patihum

I'd say bacterial spot.

+1, concentric circles, no yellowing around the spots. Hit it with some liquid copper, its bactericidal as well as fungicidal, and it stays on the leaf pretty well. Dont go crazy on the strength, more is not better with it, use it at the weakest strength, or I even dilute it to 1/2 of that, and be super thorough getting it above and undersides of all leafs and the stem right down to the soil line. But before spraying,trim off the infected leaves first and get them out of your garden. Also dont forget to wipe down the leaf clipping tool with a Lysol wipe, or some alcohol, between plants.

June 30, 2015	#2
tam91 Tomatovillian™ Join Date: Aug 2010 Location: Crystal Lake IL Posts: 2,484	Septoria leaf spot? http://www.longislandhort.cornell.ed...ria_tomato.htm I had Septoria one year, had to use Mancozeb to control. __________________ Tracy

July 2, 2015	#5
Dork Fish Tomatovillian™ Join Date: May 2012 Location: Zone 5B Illinois Posts: 402	Thanks What's the best thing to use if bacterial? __________________ Andrea

July 3, 2015	#7
Dork Fish Tomatovillian™ Join Date: May 2012 Location: Zone 5B Illinois Posts: 402	I don't have any fruit yet __________________ Andrea

July 3, 2015	#9
tam91 Tomatovillian™ Join Date: Aug 2010 Location: Crystal Lake IL Posts: 2,484	Septoria, Daconil maybe. I ended up having to use Mancozeb when I got septoria in the past. I've seen articles mentioning copper for bacterial spot, or mancozeb + copper. __________________ Tracy

July 3, 2015	#10
Dork Fish Tomatovillian™ Join Date: May 2012 Location: Zone 5B Illinois Posts: 402	Lower growth. __________________ Andrea

June 30, 2015	#3
SharonRossy Tomatovillian™ Join Date: Jul 2012 Location: Montreal Posts: 1,140	Possibly bacterial spot or speck?

June 30, 2015	#4
Patihum Tomatovillian™ Join Date: Feb 2013 Location: Southeast Kansas Posts: 878	I'd say bacterial spot.

July 2, 2015	#6
jmsieglaff Tomatovillian™ Join Date: Jan 2014 Location: Southern WI Posts: 2,742	Are the spots on the leaves only or the fruits too? If it is leaves only I think it is septoria leaf spot (fungal)--which would be plausible given how wet June as been in Illinois.

July 3, 2015	#11
Dork Fish Tomatovillian™ Join Date: May 2012 Location: Zone 5B Illinois Posts: 402	Thanks Tracy __________________ Andrea

July 3, 2015	#13
digsdirt Tomatovillian™ Join Date: Jun 2015 Location: No.Central Arkansas - 6b/7a Posts: 179	To me the spots appear to be sunken in the pics rather than raised as normally seen with Septoria. Plus there is no yellow, also normally seen with Septoria but not with Bacterial Spot. So I'll get on the Bacterial Spot Bandwagon. And they appear to be the classic dark, blackdot, water soaked, greasy looking lesions first arising on older foliage. Can't say about your location but in my region the extension agents and Master Gardener's programs that are doing consults are reporting that bacterial diseases are far, far more common this year (due to the unusual weather - warm and wet vs. cool and wet with fungus) than are the normally much more common fungal diseases. Treatment besides removing all the affected foilage ASAP and disposing of it well away from the garden are copper-based fungicides or, if available in your area, bacteriophages such as AgriPhage. Hope this helps. Dave __________________ Dave

July 3, 2015	#14
efisakov Tomatovillian™ Join Date: Nov 2012 Location: NJ, zone 7 Posts: 3,162	Organic treatments that I use: http://www.planetnatural.com/pest-pr...ial-leaf-spot/ __________________ Ella God comes along and says, "I think I'm going to create THE tomato!”