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Solutions for Cedar Quince Rust  RSS feed

 
Posts: 283
Location: Huntsville Alabama (North Alabama)
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bee building fish fungi medical herbs foraging
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A couple of my Asian Pears have orange hair like growth on the fruit and the coloring has come off on a few to the nearby leaves.  

I suspect it is Cedar Quince Rust since it looks much like the pictures I see on a University of Florida horticulture page.  

I only had Neem Oil so I sprayed that in hopes to do something.

Are there any recommended treatments that I can do now?  Looks like a a little under a third of the fruit is infected.

I can get a picture tomorrow if needed.
 
Posts: 16
Location: South Carolina 8a
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So, the best solution is to prune effected parts of the trees in the fall/spring. You will want to give the trees more air by pruning any newer branches at less than a 45 degree angle to their parent.

You may also want to look into mulching around the trees, or growing a cover crop to prevent disease spread due to splashing of dirt during the rain.

Now that it is too late for pruning, neem oil will not hurt. A copper or sulfur fungicide may be your only other current option.

If you are strictly organic, you may look into the Korean Natural Farming methods.

"JADAM sulfur" seems to do a great job of fighting/preventing fungal infections as well as pests and other diseases.

The following video explains how to make the solution yourself, if you are interested. You may want to turn on english captions if you don't speak Korean.

Good luck!
https://www.youtube.com/watch?v=1jWGS73ixxM

Dennis Bangham wrote:A couple of my Asian Pears have orange hair like growth on the fruit and the coloring has come off on a few to the nearby leaves.  

I suspect it is Cedar Quince Rust since it looks much like the pictures I see on a University of Florida horticulture page.  

I only had Neem Oil so I sprayed that in hopes to do something.

Are there any recommended treatments that I can do now?  Looks like a a little under a third of the fruit is infected.

I can get a picture tomorrow if needed.

 
Dennis Bangham
Posts: 283
Location: Huntsville Alabama (North Alabama)
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Thanks Hamilton,  
I would have to scale this down to make it something for my use.  I only have 5 trees and only 2 are affected.  I do have rock dust and sea-90 sea salt.  I would maybe try a 1/10th of the amount of the video.  Wonder if the chemical reaction would still create enough heat on the smaller amounts.
 
Hamilton Betchman
Posts: 16
Location: South Carolina 8a
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Dennis Bangham wrote:Thanks Hamilton,  
I would have to scale this down to make it something for my use.  I only have 5 trees and only 2 are affected.  I do have rock dust and sea-90 sea salt.  I would maybe try a 1/10th of the amount of the video.  Wonder if the chemical reaction would still create enough heat on the smaller amounts.




Yes! the reaction scales down, but be aware that smaller portions leave less variable tolerance in the formulation, so you have to get those numbers nearly perfect.

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Dennis Bangham
Posts: 283
Location: Huntsville Alabama (North Alabama)
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Thanks Hamilton,
Do you know where I can purchase the pure sulfur and NaOH?  The sulfur I can get is only 90% since it is a soil amendment.
 
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