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Author Topic: American Chestnut Blight Fight results  (Read 7021 times)

South Meadows Farms Consu

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American Chestnut Blight Fight results
« on: October 08, 2010, 10:15:20 AM »

Hello All

American Chestnut trees infected with blight in locations in Wales, MA, and Belchertown MA were treated with 2 biological agents ( OMRI Listed ) early this spring before the Leaf out stage.
The agents are Trichoderma Harizium  and special strain of Bacillus subtillis.

The good news is that that blight appears to halted, and the trees are producing a good crop of chestnuts.
They appear to be bigger than last years.However the squirrels are harvesting them so an accurate quantity count is not possible.
Whether a full recovery of the trees is possible,...time will tell.

Discussions with Dr. Terry Tattar, and the literature search of the biological agents distributor indicates that these bio-controls are useful in curbing many of the fungal diseases that affects food crops(tomato and potato Blights, cerearl grain rusts, etc.), and trees blights ( sudden oak death, dutch elm disease, cytospora canker,
blue stain, etc. ). Blue stain is a mold/fungus that is transmitted by the Asian long horn beetle that has been killing our maple trees.

It is interesting to note: that the Trichoderma fungus also seems to function similar to Arbuscular Mycorhizal fungi ( AMF ) in breaking down rocks and clay a making needed micronutrients available to the host plant.

 These positive results  indicates that further study should be done to help farmers, forester and gardeners
in growing better crops.

Ted.
« Last Edit: December 05, 2010, 01:44:18 PM by South Meadows Farms Consu »
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Peter King

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Re: American Chestnut Blight Fight results
« Reply #1 on: October 12, 2010, 11:06:05 PM »

Ted — How were the probiotic agents applied? Were biochar and/or clay involved? Was there an observable difference between treated and untreated trees and limbs?
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South Meadows Farms Consu

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Re: American Chestnut Blight Fight results
« Reply #2 on: October 13, 2010, 08:51:57 AM »

Peter,
The biocontrol agents were diluted with clean water per distrubtors recommendations.
Both were mixed in the same pump sprayer, and spray onto the branches and bark.
This was done early spring before "leaf-out".
This is to take advantage of the cracks formed during the winter to provide portals for biocontrol agents.
Some of the upper branches could not be sprayed. However they appeared to also benefit from the application.
The surrounding ground was also sprayed with the excess mix.

Tree bark swabs for microbe detection were  not done, but could provide valuable info in the future about the microbial colonies status, and the timing of the next application.

Clay or biochar  as biocontrol carrier were not used , but could be used in next springs applicantion.
Prelimenary proto-types  using biochar, and or a specific clayare being looked into.

ted















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JohnBonitz

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Re: American Chestnut Blight Fight results
« Reply #3 on: August 15, 2013, 05:27:06 PM »

Ted,

This is wonderful news about biological efforts to control the Chestnut blight!  I'm an active member of the Carolinas Chapter of The American Chestnut Foundation, and I'm hoping one day to plant blight-resistant trees here in the Piedmont of North Carolina.  Meanwhile, I'd like to get some experience so I intend to plant some hybrids and some true Americans on our family farm this autumn.

In addition to the blight, our greater concern is Phytophthera root rot (aka black ink disease).  Are you aware of anyone examining mycorrhizial measures to protect against Phytophthera Cinnamomi?

Also, can you please share more info on the source of this Trichoderma Harizium and the special strain of Bacillus subtillis? I'd like to look into buying some.

Thanks!

John
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