morgan in ar
Member
I have a 3 point boom sprayer, 27 foot booms, 17 nozzles spaced about 20 inches. I have always rented a boomless sprayer in the past. I have put a new pump, strainer, and several new fittings and nozzles on the sprayer. I have been reading extension publications about calibrating it, but I am confused. I will be applying grazon. I have always mixed 2.5 gallons to 100 of water for 10 acres, which equals 2 pints grazon per acre. I am using the green teejet nozzles, which should give me .13 GPM at 30 psi. Do I need to set the regulator so I have 30 psi coming up to the valve? Seems lower than sprayers I have used before. Also, in all the GPA calculations I have seen, none of them ask how many nozzles I have, just nozzle spacing. How does that work. Thank you in advance for any help.