ID this disease?

Wargamer777 · March 31, 2011

What is wrong with this plant? Gray mold? Early Blight? I'm not completely sure.

http://img861.imageshack.us/i/20110331184334191.jpg/

http://img858.imageshack.us/i/20110331184249639.jpg/

Symptoms on this plant and a few other I bought from the local greenhouse... not cool. Will see about getting them replaced.

Gobig_or_Gohome_toms · March 31, 2011

Second pic looks maybe like early blight.

Craig

feldon30 · April 1, 2011

The second one looks like possible leaf dessication from going from low light/artificial light to full sun without proper hardening off.

DanishGardener · April 1, 2011

Looks like oedema (not really a disease) to me, I had the same problem last year and my plants grew out of it as soon as they were planted in the garden.

http://tomatoville.com/showthread.ph...ghlight=oedema

I'm not sure if the leafs are yellow because of the disease, or because they need fertilizer.

Wargamer777 · April 1, 2011

Plants haven't been in full sun yet.. just back porch.

I do think this is something pretty bad... has grey splotches all along the stems and leaves are starting to wilt.

dice · April 5, 2011

That second pic looks like various leaf infections like
Septoria, some kind of bacterial spot, etc:
http://vegetablemdonline.ppath.corne...omLeafKey.html

If you click on the disease links to the right of the pictures
in the list below the table, you often get more pictures with
closeups where such are available.

cushman350 · April 5, 2011

But the mention of older leaves, these are young plants. But, I guess they are the oldest on the plant.

cushman350 · April 5, 2011

Quote:

Originally Posted by feldon30

The second one looks like possible leaf dessication from going from low light/artificial light to full sun without proper hardening off.

This is a photo of my experience with bleaching due to too much too soon. I don't see the bleaching in Wargamer777s leaves. Not similiar.

Gobig_or_Gohome_toms · April 5, 2011

Your picture is exactly what I have seen for sun/wind burn on not hardening off seedlings enough and I agree the white is not present in the original posters photos.

Craig

cushman350 · April 6, 2011

A horticulturist explained to me that the cell structure of the leaves grown under grow lights is not equal to those grown under full sun conditions. The bleaching is not terminal, those leaves will be replaced by new full sun leaves.

But, I have also experienced this bleaching with store bought seedlings not grown under lights. I guess they don't use artificial lighting, do they?

dice · April 6, 2011

A new grower from Florida reported the sunburn problem last
year or year before after first putting his seedlings out in a new
raised bed. They had been purchased from a store, where they
had been sitting outside under a sunscreen all day. When he
moved them into 12 hours per day of full sun, it was too much
too soon, even though the plants had been outside at the
vendor's location and in theory should have already been
hardened off.

Here is a good picture of classic sunburn on tomato leaves
(windburn looks similar):
http://2.bp.blogspot.com/_5TlVck4SXN...0/IMG_9671.JPG

This is a problem that the plant will outgrow. Sunburned leaves
themselves will not turn green again, but it is not an infection,
and new leaves that develop on the plants in that location will
not be sunburned.

Those dark spots on the leaves in the original poster's picture
look quite different to me, like some foliar disease that is caused
by an infectious, live organism (fungi or bacteria) and is not
merely physiological.

March 31, 2011	#1
Wargamer777 Tomatovillian™ Join Date: May 2006 Location: Boiling Springs, SC Posts: 60	ID this disease? What is wrong with this plant? Gray mold? Early Blight? I'm not completely sure. http://img861.imageshack.us/i/20110331184334191.jpg/ http://img858.imageshack.us/i/20110331184249639.jpg/ Symptoms on this plant and a few other I bought from the local greenhouse... not cool. Will see about getting them replaced.

April 1, 2011	#3
feldon30 Tomatovillian™ Join Date: May 2006 Location: Rock Hill, SC Posts: 5,346	The second one looks like possible leaf dessication from going from low light/artificial light to full sun without proper hardening off. __________________ [SIZE="3"]I've relaunched my gardening website -- [B]TheUnconventionalTomato.com[/B][/SIZE] * [I][SIZE="1"]*I'm not allowed to post weblinks so you'll have to copy-paste it manually.[/SIZE][/I]

April 5, 2011	#6
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	That second pic looks like various leaf infections like Septoria, some kind of bacterial spot, etc: http://vegetablemdonline.ppath.corne...omLeafKey.html If you click on the disease links to the right of the pictures in the list below the table, you often get more pictures with closeups where such are available. __________________ -- alias

April 6, 2011	#11
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	A new grower from Florida reported the sunburn problem last year or year before after first putting his seedlings out in a new raised bed. They had been purchased from a store, where they had been sitting outside under a sunscreen all day. When he moved them into 12 hours per day of full sun, it was too much too soon, even though the plants had been outside at the vendor's location and in theory should have already been hardened off. Here is a good picture of classic sunburn on tomato leaves (windburn looks similar): http://2.bp.blogspot.com/_5TlVck4SXN...0/IMG_9671.JPG This is a problem that the plant will outgrow. Sunburned leaves themselves will not turn green again, but it is not an infection, and new leaves that develop on the plants in that location will not be sunburned. Those dark spots on the leaves in the original poster's picture look quite different to me, like some foliar disease that is caused by an infectious, live organism (fungi or bacteria) and is not merely physiological. __________________ -- alias

March 31, 2011	#2
Gobig_or_Gohome_toms Tomatovillian™ Join Date: Jan 2008 Location: Zone 4 Lake Minnetonka, MN Posts: 967	Second pic looks maybe like early blight. Craig

April 1, 2011	#4
DanishGardener Tomatovillian™ Join Date: Nov 2009 Location: Denmark Posts: 328	Looks like oedema (not really a disease) to me, I had the same problem last year and my plants grew out of it as soon as they were planted in the garden. http://tomatoville.com/showthread.ph...ghlight=oedema I'm not sure if the leafs are yellow because of the disease, or because they need fertilizer.

April 5, 2011	#7
cushman350 Tomatovillian™ Join Date: Mar 2011 Location: Wichita Falls, TX [Tomato Hell] Posts: 99	But the mention of older leaves, these are young plants. But, I guess they are the oldest on the plant.