Determine how much liquid your treater's metering cup or bucket will dump into the seed each time the weighted seed pan trips. Record for future use.
Run seed slowly into the treater until the weighted seed pan dumps seed into the treater. Shut off the feed to the treater immediately. Weigh the amount of seed dumped into the treater. Record the setting of the weight on the weight balance arm and the weight of the grain dumped for future use.
Determine the number of dumps per bushel by dividing the weight per dump into the bushel weight of your seed. For example, a treater dumps 6 pounds of wheat each time the seed pan trips. Dividing 60 pounds per bushel by 6 gives 10 dumps per bushel.
Determine how much of the liquid or slurry you are applying per bushel of seed. To do this, multiply (1 above) the amount of chemical your metering cup dumps into the seed by (3 above) the number of dumps per bushel. Since most metering cup capacities are measured in cc while the chemical recommendations are in ounces per bushel, divide the result by 29.57 to give the liquid ounces per bushel applied.
Metering cup capacity in cc/29 57 * Number of dumps per bushel = ounces of liquid applied per bushel.
For example: 46 cc * 10 dumps/29.57 = 460/29.57 = 15.6 oz. liquid per bushel
To determine the correct amount of powdered chemical to add to one gallon of water for a slurry mixture, divide 128 by the number of ounces of liquid applied per bushel and multiply the result by the ounces of the chemical you want to apply to one bushel.
128 ounces per gallon/ (oz.liquid applied/bu.) * Oz. powdered chemical desired per bushel = Ounces of slurry to add to one gallon of water.
For example: 128/15.6 * 1.5 = 12.3 ounces powdered chemical to add to one gallon of water. Note, for additional information, see the Calibration instruction manual furnished with each machine by the manufacturer.