In the past, some growers ignored farm chemical and ground water ordinances to the detriment of the entire agriculture industry. It really doesn't cost much more to do the job properly than to cheat. FertigationDirect.com gives you the equipment you need to
DO IT RIGHT -- at the LOWEST POSSIBLE COST because you buy direct from the factory.
If you don't know the answer to these questions, you need to consult an agronomist -- regardless of how you intend to apply fertilizer!
Using the answers to these questions, calculate the weight of your fertilizer you need to apply per irrigation run at the "peak demand" part of the season.
You can set the FD95 to inject at any rate from 0 to 95 gallons per hour. Injection rate is easily set while the machine is running. The on-board flowmeter gives an instantaneous, accurate indication of how much fertilizer is being applied. No need for complicated calibrate/shutdown/adjust/startup/recalibrate procedures like for some piston and diaphragm pumps.
NOTE: While the FD95 has an infinite adjustment range from 95 gallons per hour down to 0 gallons per hour, all flowmeters are less accurate at their extreme bottom end. Therefore, you'll get less accuracy at rates under 10 gallons per hour. If you need to inject smaller amounts of fertilizer, it's best to use a more dilute fertilizer mixture and inject at a higher rate for better accuracy.
Of course, before you fertigate, you need to have legal equipment. This normally consists of a chemigation check valve or backflow preventer in your irrigation line and an injector that meets all federal and state requirements. If you don't already have a backflow preventer installed in your irrigation system, consult your irrigation equipment dealer for an approved backflow preventer.
FertigationDirect injectors meet legal requirements for injectors in all 50 states, including EPA 87-1 as amended and all state fertigation codes.