I wanted to buy it last spring but decided to hang on to my cash to hire a new guy. I do not recall a detail squirt and fert mod. You can set up the fields in some manner.
I did the free trial but frankly they have some good on-line training and live webcast. It is more a service management program than a lawn / program.
Qxpress is likely a better pre-formated software for your industry... then Clip and Gopher IMHO.
I ruled out Qxpress after using it some time back and their move toward the on-line rental and insistance to hang with windows mobile.
This software Desco looks more refined and powerful to me.
The biggest is that also links up to another 3rd party for GPS tracking.
That part would be subscription because of the two way cellular communication.
They offered a payment plan that came to 2800 or so and a cash price of just over 2200.
Not a cheap program but it does not look cheap either.
If I do something this will be it.
http://desco-soft.com/
Here is the training and tutorials
http://descosupport.com/