Captan 50WP Fungicide Mix Ratio: Washingtonia Robusta

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Help, please: what is the recommended application mix-ratio for Captan 50WP for bud-drench, trunk and trunk-base-root treatment for post-frost-damage/cool-wet-spring fungus avoidance?

I have been told to alternate two treatments of copper and Captan. The Copper (SouthernAg liquid concentrate) has the mix rate, but the Captan 50WP (AgriStar) does not. Many forums recommend the Captan for prophylactic fungus treatment for the Mexican Fan Palm, but none of the manufacturers* have a mix rate on the label for palms - only for fruit and ornamentals. Two local palm sellers recommended the minimum mix ratio on the label.

Also: Any position on the efficacy of hydrogen peroxide? Bandied about as a good bacterial treatment for the bud.

Thanks so much for your time and consideration, folks.

(* also checked SouthernAg, Bonide, Arysta)

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I use 9:1 ratio (water to concentrate) with the Copper and Daconil.  I only use the powdered Captan, but would think to mix it like Daconil. I stay away from Peroxide.

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