What would cause this? Abnormal Top Leaves

[Mjoslin]

Anyone know what would cause this???

 

[Knucklehead]

Manganese Toxicity looks close

Manganese Toxicity | Burley Tobacco Extension

Mnaganese toxicty is caused by low soil pH.

burleytobaccoextension.ca.uky.edu

Another Manganese. I’m going with Manganese, an early symptom is it starts with the upper leaf.

Manganese Deficiency | Tobacco Diagnostic Key | NC State

 

[Knucklehead]

Here’s some diagnostic images

Agricultural Systems : Tobacco

Image Gallery | Burley Tobacco Extension

burleytobaccoextension.ca.uky.edu

Tobacco Diagnostic Key | p1 | NC State

Tobacco

Tobacco

ephytia.inra.fr

 

[Knucklehead]

Frenching might be a possibility but the time that I saw it, I had some weird leaves growing along with the light to dark veining

frenching

 

[deluxestogie]

Have you checked soil pH?

Bob

 

[plantdude]

Along the lines of bob's question, here is a rough soil pH map of MI


If you are in a high pH zone iron deficiency (non chelated form) causing chlorosis may be the issue. We used to have a hard time with that in the alkaline soils of CO where I used to live (plenty of iron but bound in an unusable form for the plant to take up). Just a guess to add to the list.

 

[Mjoslin]

Have you checked soil pH?

Bob

No I haven't. I will though. I see frenching is common in high ph soil. We have also been getting a lot of rain and the soil dosen't drain the best. It seems to be only affecting new leaves on a few plants.

 

[deluxestogie]

With transient (± a few weeks) conditions, I've seen Frenching appear, then go away spontaneously. I've also seen Frenching that just irretrievably damages the top of the plants. A cheap, soil pH test kit will tell you if you're pH is outrageously off, or just by a smidgen.

Bob

EDIT: Welcome to the forum. Feel free to introduce yourself in the Introduce Yourself forum.

 

[Mjoslin]

With transient (± a few weeks) conditions, I've seen Frenching appear, then go away spontaneously. I've also seen Frenching that just irretrievably damages the top of the plants. A cheap, soil pH test kit will tell you if you're pH is outrageously off, or just by a smidgen.

Bob

EDIT: Welcome to the forum. Feel free to introduce yourself in the Introduce Yourself forum.

Soil ph is between 6.5 and 7

 

[deluxestogie]

Then you've got Frenching. A soil pH range of 5.8 to 6.2 (max 6.5) allows the minerals and nutrients in the soil to be adequately utilized by tobacco. I would suggest applying a soil acidifier.

Bob

 

[Mjoslin]

Then you've got Frenching. A soil pH range of 5.8 to 6.2 (max 6.5) allows the minerals and nutrients in the soil to be adequately utilized by tobacco. I would suggest applying a soil acidifier.

Bob

Do you have a recommendation on what to add that would be safe considering I have plants in the ground already?

 

[deluxestogie]

I don't. Have a look in the plant nursery stores for sulfur compounds for azaleas or blueberries. You don't want the pH acidic enough for those acid loving shrubs, but it can safely lower the pH with living plants in the ground.

Bob

 

[plantdude]

Aluminum sulfate, cooperas (brand name), and soil sulfur should all work. Miracle gro also makes a fertilizer called Miracid which should work (not sure if it has urea or not though so it may not be good for young plants). A product called Ironite used to work wonders for us in CO. It adds the chelated form of iron as well as acidifies the soil somewhat - the liquid form works much quicker than the granular form.
Next year adding more organic matter/compost and peat moss to you growing area prior to planting should help.

 

[Mjoslin]

I don't. Have a look in the plant nursery stores for sulfur compounds for azaleas or blueberries. You don't want the pH acidic enough for those acid loving shrubs, but it can safely lower the pH with living plants in the ground.

Bob

Thank You for all your help. I think I found what I need.

 

[Tuto]

Is that the Only plant, in the whole field, with the problem?