bernstem said:
In high summer heat, you should consider 0.5-0.75 inches every 2-3 days or when the grass shows signs of drought stress. Water loss from the lawn can be 0.2 inches per day or more if it is 90+. If it gets to 100, then it is likely 0.3+ inches per day.
G-man just posted an article on watering: https://thelawnforum.com/viewtopic.php?f=5&t=19653
bernstem said:
According to hunter's specs, PGP ultras in a square pattern with #3 nozzles and 180 degree arc put out 0.4 in/hr. #6 nozzles put out 0.6 in/hr with 180 degree arcs. Your catch can results seem in line with published specs.
Spray heads like the picture often put out a much higher volume than rotors.
I know I'm reviving an old topic but I have a similar question. I think y po u referred fo the PGP ultra data which is different to the PGP red nozzles. Attached is a picture
I currently have a mix of PGP and i20 (replacing the PGP as they give out). My PGP were running a 5 or 6 nozzle in most of my rotors. I run 6 zones one day and 5 the next day. If I run these 5 or 6 nozzles at 50psi, it takes me an hour and a half to put down 0.5" of water which is crazy because it will take 9 hours to run the system.
So I was graduating up nozzles upto 9 or 10 but the kicker is that this one area is a slope and on a busy main road. I run this first to avoid traffic and associated wind BUT I fear the slope will have run off.. should I just stick with a smaller nozzle here and prolong the time (start zones time will probably be around 330 then)
OR
Run the bigger nozzle which should help with larger droplets and less wind effect. run the zone for 25 mins, rest 20 mins and run again for about 25 mins..
Confused a little ..
