Can anyone tell me what might be going on with my Korean Giant? We have had quite a bit of rain lately so I am guessing fungal but not entirely sure. Any treatment ideas?
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That is the beging stages of Fabraea. This particular variety has resistance compared to European pears. I am surprised to see that on that variety. Fabraea has stunted growth and killed about 4 of of my European pears. I only have 2 now a Barlett and Gem. Bartlett does OK, Gem get infected so bad after contant rain fall.
It is important to pickup all the infected leaves to prevent that next year. I hope that it does not lose it leaves. I suspect that it wont since I have those issues but my Korean Giant never got that bad. A few spots here and there is normal.
Here are a few pics of my Korean Giant. Take a look at the leaves. This is my best tree as far as disease resitance and fruit production.
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I would suggest removing the lower leaves and branches. Remove the highly infected leaves but dont remove them all to the point where it doesnt have many leaves left. You need to try and keep the new growth clean. Fabrea will work its way up and around. Clear as much as possible from the surrounding soil area. Keep the water from splashing from the soil to leaves. A nice radial mulch around the tree trunk helps. I do copper spray in the fall and spring.
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They look like pear leaf blister mites to me.
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With the mention of rain it is likely fabraea from my experience. Happens shorty after constant exposure to rain. Red spots to purple then eventually black.
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There are 3 things going on there i think. Scab , Fabraea, and what looks like the beginning of trellis rust though that is to be determined. i believe the problem is not the disease but rather i think your tree needs a fertilizer containing boron. Are any leaves showing a slightly crinkled appearance? @Richard that looks like a mineral ddefficiency to me and the diseases are just oppurtunistic. Any thoughts on fertilizer?
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@ChikenSkrilla24
You’ve received good advice about disease interventions. If you haven’t already, get a soil analysis to determine if nutrients are part of the problem.
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Thank you all for great information. The rest of the trees in my orchard are doing pretty well including my other pears. However, I did notice yesterday my Magness pear is starting to show a little bit of the black spotting like my Korean Giant but not near as bad. I had planned on applying Immunox today to try and combat the pear scab and Fabraea. @clarkinks I did not see any leaves that are crinkled. The tree looks to be in pretty good shape with the exception of the black spots on the leaves. I received two free bags of Azomite the other day so I gave each tree a healthy dose as well. @Richard, I will collect another soil sample and send to the University of Arkansas to see if I am deficient in any nutrients. Would you all agree that Immunox would be the way to go as of right now?
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@ChikenSkrilla24
I recommend you do not apply Azomite anywhere in your yard. It contains Aluminum oxides which are not good for you or your plants in the long run. The entire product is a scam. None of the minerals claimed in the advertising portion (front) of the label are available to plants – nor will they made available to plants by soil chemical or biological processes for thousands of years.
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Thanks @Richard. I had read your comments on the previous threads regarding Azomite but figured I would use up the two bags I had received since they were free. Any thoughts on the Immunox to treat the Scab and Fabraea? We are supposed to receive some more rain today so wanted to get ahead of it before it gets too bad.
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I’ve no experience with Fabraea.
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Immunox is no longer label for pears if i remember correctly. I would use it anyway until what i had was gone. I cant advise you to do that but i would.
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