Originally Posted by ArTurf
I have been wondering how low volume and liquid fert would work and finally came to the conclusion that I am going to go with 2 gallons per K with my Z Max. I will use the grey tips and go slower (see Z chart). I might use 1 gal per K if conditions are perfect and then water with irrigation.
Read this info.
With fertilizers, it is always over 2 gallons per 1000. My actual rate of ammonium N or nitrate N will influence the range. If I am going over 1/2 lb of non CRN nitrogen, it is sprayed out in 2 gallons per 1000. If it is over 85 at the time of application, water volume goes up to 5 gallons per 1000. I have had grass scorch before I was able to irrigate the application in if the water volume was too low. Centipede gets 1/4-1/2 lb of N per month 50% from CRN. St Augustine is 1/2-1 lb of N up to 33% is from CRN. Bermuda is 1-11/2 lb of N 33% from CRN. Zoysia is at 1/2-1 lb 33% CRN. N is not the only thing I am applying either. For all grasses, there is up to 1/2 lb of K from potassium nitrate in each application. The lower rate of the range is for the cold, and cloudy months. I really have to pay attention to the weather trends. Pushing grass with high rates when the temps are below 80 in the day and 70 at night is a waste. However, if I do not have enough fertilizer down when it is 80 at night and over 80 in the day time leads to grass that looks really bad.
I have applied at 1 gallon per 1000, but that is very scary. I only get away with it if it is cool and humid. Otherwise, grass can burn before you can irrigate. On big lawns, I am spraying right ahead of the irrigation zones as they go on if I am am applying anything over a 1/2 lb per 1000 mix.
Just so everyone understands this info is from GreenDoctor.