Dormant sprays are vital in controlling pests and pathogens on fruit trees. However, every year I go to to them, I have to dig through the internet to find precise amounts of copper and dormant oil to apply. The sheets attached to most crop protection products fall off or get crusty, so it is good to indpendently verify the mixtures. Plus, most applications are listed in terms of "tablespoons" or percents of stock solutions without listing the concentrations.
To fix the problem, I'll list it here.
for those that prefer the archaic, imprecise and problematic methods of measurement
Dormant Oil (mineral oil) 2% v/v Stock 100%. 2.56 oz per gallon.
Copper (diammonia diacetate complex) stock 27% (w/v) 4-5 tsp/gallon.
For those that prefer the elegance of the metric system
Dormant Oil (mineral oil) 2% v/v Stock 100%. 20 ml / liter
Copper (diammonia diacetate complex) stock 27% (w/v) 18.75 ml/liter
