Quote:
Originally Posted by bencelest
Joe:
I have that Asian Pear which were attacked by Fireblight last year and I treated it with copper sulfate when it was dormant and applied again when the buds started showing. But I used also the AZ41 a couple of times.
And I did not see any wilting of new buds.
I was going to say that AZ41 helps but it maybe too soon to say.
Cooper sulfate did not eradicate the fireblight last year because the symptoms were there still although less excessive.
What I did not know is that AZ41 may have help to eradicate fire blight.
Or is it too soon to tell. My Asian Pears starting to bloom and form leaves at this time.
Benny
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Benny,
AZ41 has bactericidal properties so it could help eradicate fireblight. One of the problems of AZ41 is that it is oil-based, primarily low chain oils for complete solubility with water. Being oil, it may damage the bloom and make it unattractive for pollinators, so we don't recommend spraying at peak bloom (usually at 50% opened flowers).
As long as you apply copper sulfate four hours after spraying AZ41 or apply AZ41 a full day after copper sulfate, there should be no problems. You should apply copper sulfate spray directly unto the blooms of apples and pears to minimize fireblight. We recommend spraying of AZ41 after petal fall or 15 days after peak bloom whichever comes first. I will do formal trial with AZ41 directly on the apple blooms and see what happens.
It is the same with citruses. Don't spray AZ41 when you have a lot of citrus flowers open. Wait until most petals have fallen before resuming the spraying. The idea is not to discourage bees and other pollinators during peak blooms. Although the pollinators will easily escape sprays, it may discourage them from pollinating your crops.
We are also developing a product that will take care of codling moth of apples and asian pears. Just PM me if you have codling moth problems.
Regards,
Joe