Measurements Conversion (Spraying)

I have liquid copper octanoate (what I could find locally) gonna spray peaches, pears, and apples with the dormant oil combo.

Copper measurements say do not exceed 1 gallon in a 100 gallon unit.

If I’m using a 4 gal backpack sprayer, does that equate to 5.2 ounces of copper? Brain is going on tilt trying to break that one down.

It does say, “x 0.5 to 2.0 fluid ounces of this product in a gallon of water. Unless otherwise stated in specific application notes, apply 1.1 to 2.3 gallons of diluted spray per 1,000 ft”

By apples it says, “Do not exceed 1 gallon of product per 100 gallons of water.”

My apples and things haven’t had much problems at all over the years. My aunts peaches are awful that I am mostly planning to attack with this. Thoughts?

Here’s a helpful guide Scott once wrote up:


1 Gal = 256 Tbs 256/25600 = 2.56 Tbs per Gallon

Yes 5.2 oz max. But since the label also says .5 to 2 oz that would be 2 to 8 oz in the 4 gal spray. If it was me I would use 5 oz in the 4 gal sprayer if you are spraying all the trees including the apples.