Leaf curl

duajones · March 8, 2007

Noticed this when I got home today on many of my plants. I mulched with pine bark mulch and sprayed daconil on them yesterday afternoon. Thats the only thing I have done different since they went in the ground. Im not sure if its a problem or not. Any Ideas?

Duane

feldon30 · March 9, 2007

I think leaf curl is a physiological problem which is the plant is still working out how to distribute all the nutrients throughout the plant. I do believe it will go away of its own accord.

Curious if you are following Earl's hole planting method (mix 1 handful of TomatoTone 4-7-10, 1 handful of Epsom Salts, and 1 handful of Bone Meal along with 10 lbs of Compost in with the cubic foot of soil where the plant will be) or some other method?

duajones · March 9, 2007

Didnt follow his method. I ammended the soil with cotton burr compost, ,manure and some alfalfa pellets. I did mix in compost, tomato tone and epsom salts with the dug out soil for each plant. As for the leaf curl, most of my plants looked better this morning, I just overreacted

dice · March 10, 2007

I bet it was something in the daconil solution.

IIRC the first list of soil amendments you put
in months ago (so the manure is surely composted
enough by now to not overstimulate the plants even
if it was fresh when you got it). The only thing in the
second list that the plant would have found shocking
is too much Tomato Tone, and why would they wait
until after you mulched and sprayed to react to that?

Pine Bark mulch wouldn't cause an abnormal growth
reaction unless it had some kind of industrial waste
or similar infused into it (not likely).

A chemical spray, OTOH, could have pretty much anything
in the "inert ingredients." (I am guessing that you
probably followed the directions on the bottle, so it
likely was not an overly high concentration of the Daconil
solution that caused the leaf curl.)

"Shake well before using." (?)

This can be an environmental reaction, too.
Sudden change in the weather? They generally
recover from weather-induced leaf curl without lasting
effects.

feldon30 · March 10, 2007

A similar topic:
http://www.tomatoville.com/showthread.php?t=2160

amideutch · March 15, 2007

I came across this while on the net. Ami
http://www.umanitoba.ca/afs/hort_inq...leaf_roll.html

duajones · March 15, 2007

Thanks for the link, good read

**carolyn137** · March 15, 2007

Ami,

I rapidly scanned that Manitoba site and I have a problem with it, in general.

And that's b'c they're attributing all means of leaf CURL to leaf ROLL.

Leaf Roll is understood by many to be a temporary situation found when plants are young and root and foliage mass are not in balance which causes a temporary stress. It's completely reversible as the plants mature.

While the reasons for leaf CURL are many and varied ranging from most hybrids that do have curled leaves normally, to general stress as in too cold, too hot, too wet, too dry, too much of a fruit burden which can also cause leaf curl, as well as many viral diseases, and on and on.

But Daconil has never been known as something that causes leaf curl, from all I've read and also with my former long time experience with it as well as the experience of all my commercial farmer friends over a very long period of years.

amideutch · March 15, 2007

I Misunderstood Carolyn's reply and when I looked up 2,4-D I saw a referance to Daconil but it is not in the ingredients. My mistake. Suze, thanks for bringing it to my attention. Got a little confused. Ami

Suze · March 15, 2007

Quote:

Originally Posted by amideutch

Carolyn, I was wondering what Daconil had to do with it till I looked up 2,4-D. They discribed 2,4-D as a Hormonal Herbicide so I didn't see the connection. So is 2,4-D only a fungicide or is it a combination of a hormonal herbicide and a fungicide. As they referenced it for weed removal which is what herbacides do what is the Daconil's part. I can see leaf curl caused by the herbacide as they discribed it as I have seen it when I used "Roundup" one time to close to a tomato bush not knowing at that time what the consequences would be, but found out in a hurry. Ami

Ami, I read the referenced article, but I don't understand your interpretation of it. 2,4-D aka Roundup, aka glycophosphate is not a fungicide. Daconil aka chlorothalonil is not a herbicide. Two completely different products/chemicals.

Ruth_10 · March 22, 2007

Quote:

2,4-D aka Roundup, aka glycophosphate

Just to keep things straight, 2,4-D is not at all related, structurally, to Roundup (glycophosphate), though both are herbicides.

March 8, 2007	#1
duajones Tomatovillian™ Join Date: Dec 2006 Location: Corpus Christi,Texas Z9 Posts: 1,996	Leaf curl Noticed this when I got home today on many of my plants. I mulched with pine bark mulch and sprayed daconil on them yesterday afternoon. Thats the only thing I have done different since they went in the ground. Im not sure if its a problem or not. Any Ideas? Duane

March 10, 2007	#4
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	I bet it was something in the daconil solution. IIRC the first list of soil amendments you put in months ago (so the manure is surely composted enough by now to not overstimulate the plants even if it was fresh when you got it). The only thing in the second list that the plant would have found shocking is too much Tomato Tone, and why would they wait until after you mulched and sprayed to react to that? Pine Bark mulch wouldn't cause an abnormal growth reaction unless it had some kind of industrial waste or similar infused into it (not likely). A chemical spray, OTOH, could have pretty much anything in the "inert ingredients." (I am guessing that you probably followed the directions on the bottle, so it likely was not an overly high concentration of the Daconil solution that caused the leaf curl.) "Shake well before using." (?) This can be an environmental reaction, too. Sudden change in the weather? They generally recover from weather-induced leaf curl without lasting effects. __________________ -- alias

March 15, 2007	#8
carolyn137 Moderator Emeritus Join Date: Jan 2006 Location: Upstate NY, zone 4b/5a Posts: 21,169	Ami, I rapidly scanned that Manitoba site and I have a problem with it, in general. And that's b'c they're attributing all means of leaf CURL to leaf ROLL. Leaf Roll is understood by many to be a temporary situation found when plants are young and root and foliage mass are not in balance which causes a temporary stress. It's completely reversible as the plants mature. While the reasons for leaf CURL are many and varied ranging from most hybrids that do have curled leaves normally, to general stress as in too cold, too hot, too wet, too dry, too much of a fruit burden which can also cause leaf curl, as well as many viral diseases, and on and on. But Daconil has never been known as something that causes leaf curl, from all I've read and also with my former long time experience with it as well as the experience of all my commercial farmer friends over a very long period of years. __________________ Carolyn

March 15, 2007	#9
amideutch Tomatovillian™ Join Date: Feb 2006 Location: Germany 49°26"N 07°36"E Posts: 5,041	I Misunderstood Carolyn's reply and when I looked up 2,4-D I saw a referance to Daconil but it is not in the ingredients. My mistake. Suze, thanks for bringing it to my attention. Got a little confused. Ami Last edited by amideutch; March 16, 2007 at 02:12 AM. Reason: Misread

March 9, 2007	#2
feldon30 Tomatovillian™ Join Date: May 2006 Location: Rock Hill, SC Posts: 5,346	I think leaf curl is a physiological problem which is the plant is still working out how to distribute all the nutrients throughout the plant. I do believe it will go away of its own accord. Curious if you are following Earl's hole planting method (mix 1 handful of TomatoTone 4-7-10, 1 handful of Epsom Salts, and 1 handful of Bone Meal along with 10 lbs of Compost in with the cubic foot of soil where the plant will be) or some other method?