Kocide instead of Phyton?

[Ozpaph]

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

 

[Ray]

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.

 

[werner.freitag]

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

Label and SDS : Phyton 27 AG - Phyton Corporation - | Greenbook

 

[Ozpaph]

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.

 

[Frankie]

I see no one answered your question. Did you find anyone with actual experience? I have been alternating with kocide with phyton27 but it is probably overkill. I am also trying to find what works best ( yellow leaf spot in my case). I only started with both. Soon I will do a trial test eoth each separately.