Another tomato problem, disease? or something else?

kevinrs · June 15, 2011

I've been looking at the sticky threads here, and the linked pages, not seeing anything with quite this situation.Seeing brown spots on newer leaves and stem of this tomato plant.

This is on top of my Black Krims apparently getting terminal physiological leaf curl, a gopher in one end of the tomatoes, and several plants just not growing like they should. This plant is otherwise one of the good looking ones.

amideutch · June 16, 2011

Dissolve a couple generic aspirin tablets in 2 gallons of water and spray your plants with.

Ami

PeteD · June 16, 2011

I have noticed that black varieties in general seem more prone to leaf curl than other varieties that I grow...including Noire to Crimee, Black from Tula, and Carbon to name a few.

kevinrs · June 17, 2011

Quote:

Originally Posted by amideutch

Dissolve a couple generic aspirin tablets in 2 gallons of water and spray your plants with.

Ami

actually, just thought of, which problem was this supposed to help with?

kevinrs · June 17, 2011

Oh, and I think there could well be a nematode problem, the soil is sandy, and I believe the orchards about 6 miles away periodically get torn out and fumigated and replanted due to nematodes. Possibly the stress the nematodes put on the plants makes them more susceptible to anything else that comes along. I'll have to decide to pull the worst black krim if I decide it's a hopeless loss and examine the roots.

dice · June 17, 2011

Aspirin and plant immune systems:
http://www.biology-online.org/articl...e_systems.html

kevinrs · June 18, 2011

ok, pulled the black krims, the worst one the roots were pretty much non existent, rotted away, the other one I pulled and took some pictures. I was expecting something like the pictures of nematode problem plants, but, the roots just look pathetically underdeveloped. Actually there were many more roots when I planted out.

dice · June 18, 2011

It could be viral, could be attack from the same root pathogens that
cause damping off. Could be fusarium crown and root rot, although I do
not know if that is found in your area of the country. This article on roots
for hydroponic growers has an in-depth explanation of differences
between healthy and unhealthy root systems and different causes:
http://www.maximumyield.com/article_...?articleID=473

Soil pH can be an issue in developing healthy root systems, too:
http://www.jstor.org/pss/2396091

Nematode problems you already know about, but your plants
do not really match pictures that I have seen of tomato plant
rootballs with root-knot nematode damage. You may still have
that problem, but it looks like something else affected those
plants before that could happen.

dice · June 19, 2011

PS:
A good description of root behavior in wet and dry cycles:
http://lists.ibiblio.org/pipermail/p...ry/007522.html

June 16, 2011	#2
amideutch Tomatovillian™ Join Date: Feb 2006 Location: Germany 49°26"N 07°36"E Posts: 5,041	Dissolve a couple generic aspirin tablets in 2 gallons of water and spray your plants with. Ami __________________ Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘...Holy Crap .....What a ride!'

June 17, 2011	#6
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	Aspirin and plant immune systems: http://www.biology-online.org/articl...e_systems.html __________________ -- alias

June 18, 2011	#8
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	It could be viral, could be attack from the same root pathogens that cause damping off. Could be fusarium crown and root rot, although I do not know if that is found in your area of the country. This article on roots for hydroponic growers has an in-depth explanation of differences between healthy and unhealthy root systems and different causes: http://www.maximumyield.com/article_...?articleID=473 Soil pH can be an issue in developing healthy root systems, too: http://www.jstor.org/pss/2396091 Nematode problems you already know about, but your plants do not really match pictures that I have seen of tomato plant rootballs with root-knot nematode damage. You may still have that problem, but it looks like something else affected those plants before that could happen. __________________ -- alias

June 19, 2011	#9
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	PS: A good description of root behavior in wet and dry cycles: http://lists.ibiblio.org/pipermail/p...ry/007522.html __________________ -- alias

June 16, 2011	#3
PeteD Tomatovillian™ Join Date: May 2006 Location: MA Z6a Posts: 72	I have noticed that black varieties in general seem more prone to leaf curl than other varieties that I grow...including Noire to Crimee, Black from Tula, and Carbon to name a few.

June 17, 2011	#5
kevinrs Tomatovillian™ Join Date: Feb 2011 Location: Littlerock, CA Posts: 218	Oh, and I think there could well be a nematode problem, the soil is sandy, and I believe the orchards about 6 miles away periodically get torn out and fumigated and replanted due to nematodes. Possibly the stress the nematodes put on the plants makes them more susceptible to anything else that comes along. I'll have to decide to pull the worst black krim if I decide it's a hopeless loss and examine the roots.