Re: Round Up ????

Posted by Heat Houser on June 21, 2007 at 19:51:14 from (69.66.35.73):

In Reply to: Round Up ???? posted by Devin Sparks on June 21, 2007 at 10:07:39:

You need to determine how many gallons per acre your sprayer will do. To determine this, you will need to know your nozzle spacing. (distance between nozzles)

I will use the procedure for a 20 inch nozzle spacing.
Fill your tank 1/2 full of water.
Set your throttle and select the gear you will be using in the field while spraying.
Measure out 204 feet.
Twenty five feet behind the starting mark, select the gear and set the throttle.
When you cross the "starting line" start your stop watch and stop the watch at the end.
Do this three times and average the result.
Select the pressure you will be using while spraying.
With the sprayer stationary (and spraying) collect the output of one nozzle for the number of seconds that it took to travel the 204 feet.
Ounces collected equals gallons per acre. (The length of your boom or the number of nozzles do not figure into your calculation for gallons per acre, only the output of ONE nozzle is used.) Collect from each nozzle (for the number of seconds) and compare the ounces. A nozzle should not vary more than 5% by volume when compared to the others.

Let's say you collected 13 oz and have a 200 gal tank. You will be putting on 13 gals per acre so 200/13 equals 15.4. One tank will do 15.4 acres.
How much roundup to put in the tank? 15.4 quarts if you are doing 1 qt per acre. A gallon has 128 ounces in it so your rate will be 32 oz per acre.

To do a reverse calculation where you will be needing less than one tank full: Example, 10 acres.
10 times 13 gals per acre means you will need 130 gals of spray mixture in the tank. (Water, roundup and AMS) Roundup, 10 quarts, AMS 1.3 gallons (if using liquid AMS)

I do 27 oz per acre with one gallon of liquid AMS per 100 gallons of tank capacity.

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