Kocide instead of Phyton?

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Ozpaph

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Ive never seen copper sulphate sold for horticultural use in Australia (if you exclude 'root killer for blocked drains!)- only copper formulations.
 

Ray

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Yes. Copper sprays are suspended particles in solution. Particle size is important. http://www.scaffolds.entomology.cornell.edu/2012/SCAFFOLDS 3-12-12.pdf
I read another article but cant find it now; same consclusions.
Apples and oranges...

Note that those products discussed are intended to lodge in the bark of orchard trees or sit on the leaf surfaces, so they have little to no effect on the tree but kill fungi landing on them. Absolutely not what is done for systemic orchid treatments.
 

Ozpaph

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cant get that here as far as I know..................the copper 'particulate' sprays are the only ones available. Its important to me to know the 'best' preparation as that's what we have available.
 

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