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Lloyd Godman 's Profile
Lloyd Godman
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Joined:
12/08/2013
Last Updated:
12/08/2013
Location:
Victoria, Australia
Climate Zone:
Warm Temperate
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Male
Web site:
lloydgodman.net





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Trichoderma

Posted by Lloyd Godman over 10 years ago

organic spray for peach leaf curl that WORKS!

I have found the most successful means of treating leaf curl on peaches and nectarines is spraying with a Trichoderma mix. The great benefit of this is that it is totally organic. Trichoderma is a naturally occurring  organic fungus which feeds on other fungus like that of Taphrina that causes leaf curl. Whereas copper sulphurs applications often defoliates the tree and kills other beneficial fungi, Trichoderma will only attack the area where the leaf curl is on the leaf, the remaining leaf section remains intact and continues to grow and photosynthesis in the normal manner. Regular applications of Trichoderma can eliminate leaf curl completely. Trichoderma should be applied at leaf burst and then 2 or 3 times through the season. However as a living organic substance Trichoderma cannot be applied in conjunction with chemical applications.

 

Trichoderma also works on other fungal problems like Apple Scab (black spot), rust on Silver Beet and Celery, Powdery Mildew on Grapes and Cucurbits. However in these cases it works better to treat the plants before the fungus is apparent. 

 

Trichoderma 1 Leaf curl 1

Comments (3)

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Helder Valente
Helder Valente : This is a great tip...thanks for sharing ;)
Posted over 10 years ago

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Richard Larson
Richard Larson : Oh. Thanks a lot!
Posted over 10 years ago

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Dennis Argall
Dennis Argall : For people with small numbers of trees,I think it remains most useful to remove affected leaves by hand, clean up the ground below and recompost it. nutrition, nutrition, nutrition. This only works if you are inspecting threes often enough. Be careful to bag the affected leaves and remove them to trash. Fungi flourish in humid and crowded situation, so you may do well to see if there is a need for pruning or some adjustment of space around the tree. Fungi are everywhere, you can't get rid of them entirely, or the planet would collapse. The well fed, well sunned-on, well-aired, not too humid tree is more resistant. Nevertheless, be careful to wash hands before moving on from removing affected leaves.
Posted over 10 years ago

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