Can I apply one of the different solutions with fruit on the tree? Or is this something I spray every winter?
Thank you very much. I will try getting my soil tested.
dsteger, you have the peach tree attacked by the fungus that causes the disease, and it is also a little weakened.
If it were my tree I would do the following treatment:
If it is possible to buy Difenoconazole 25% (this is the active principle, and it has many commercial trademark, such as Core, or Score) it would be fantastic, in case you cannot find difenoconazole, if you are going to find Captan 80% in stores of photosanitary.
That said, you should do a foliar spray treatment with the fungicide, and these are the dosages:
If you find difenoconazole
- Difenoconazole 25% (30 cubic centimeters or milliliters for 100 liters of water, for a 10 liter fumigation backpack only 3 cubic centimeters or milliliters of fungicide)
If you find Captan 80%( 250 grams of granulated product for 100 liters of water, for a 10 liter fumigation backpack only 25 grams of granulated fungicide)
With both products, a single application by foliar spraying will suffice.
To invigorate your tree, you can apply two treatments via irrigation with a period of 15 days between each treatment.
Apply via irrigation 2 products
- Biostimulant with amino acids
- Corrector of deficiencies nutritional rich in microelements whose nutrients are chelated
This is what I would do if it were my tree.
After these treatments, your peach tree will explode with great vigor emitting a lot of new foliage and new young vigorous branches.
Regards
Jose
I read through this post and read the linked article. Linked article is pretty much useless. I have one peach tree doing this, entire leaves tuening redish. First time it has happened to me. It happened over night I did do a heavy watering the day before since I dont have irrigation on this tree but watered 5 other peach trees the same and this is the only one with the problem. The sandy soil drains fairly quick but I am not rooting 
out this as the problem.
This Desiree peach tree has bacterial spot resistance but I understand it is not immune. All other 5 peach and all 6 nectarines are doing great.
My experience tells me it is not hole shot, definelty not peach leaf curl. If you have experienced this let me know if you figured it out.
I considered a micronutrient deficiency but that does not happen over night. It is not spotted and the entire leaves are turning a reddish color. I’ll get a picture when I get home.
I started thinning instead of doing my usual walk, big mistake that I walked around at dusk.
Any ideas?
We’re not going to be able to make a good guess here without some pictures. If its only on the top it could be phosphorous deficiency:
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Did you spray with copper after they leafed out. I did, this is what the leaves looked like a few days later
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Yes I did 2 weeks ago after fruit set. Little concentartion compared to dormancy. I sprayed all my peaches and nectarines alike. Only this one is a problem, well at least so far.
Copper toxicity looks very similar to bacterial spot. In my case the entire leaves look redish and it happened over night. Watered late Sunday when I took my walk at dusk Monday the were redish.
I’ll get a picture for a better diagnosis. If memeory seves me right they looks like the first picture but not that dark any only newer growth.
My guess is coryneum blight (shot hole) or recently sprayed with copper during the heat of the day which causes damage that looks very similar to coryneum blight.
On a side note… i had coryneum blight bad and 2 peach trees dropped just about all their leaves. Come to find out my soil was to acidic. I admended the soil with lime from 5.4 ~ 5.6 PH to ~ 6.8 PH and it really helped a lot. It’s showing up a little again on the same two trees but its been very wet growing season so for. So once the soil dries out enough to get a good PH reading, i’ll test it again.
Hole shot is a bacterial, spraying copper is copper toxicity. They look very similar, but this is neither. Hope
this will give you all a better idea.
Thanks for those that replied.
Pic in my hand is front and back of the leaf.
It looks like it’s just shedding some excess leaves. Nearly all of the leaves look great. I wouldn’t worry about that.
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Also check this link. It was very helpful to me in my learning process about peach trees.
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