Copper spray 50% or not effective | General Forum | Discuss

Copper spray 50% or not effective

Ric

5 Posts

(Offline)

January 24, 2009 - 10:33 pm

I've seen this before but have no idea what it means???
From Pome News, Winter 09, On the calendar, January, Fruit Tree Specific: mid -January, second spray (copper [at least 50% or not effective]

Ted

95 Posts

(Offline)

January 24, 2009 - 10:42 pm

If the copper spray does not contain at least 50% copper it will not be effective as a fungicide. Be aware that the EU has discontinued the use of copper as an organic fungicide.....it will eventally happen in the US.

Ted

Ric

5 Posts

(Offline)

January 26, 2009 - 10:05 am

Thanks for getting back to me Ted. I guess I should have phrased my question a little differently. What I was really after is how to measure when I have a 50% solution.

I ran into a lilly miller rep when I was buying some copper and he told me that polysul is going to be discontinued also. Apparently enviormental legislation according to him.

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