Why Do You Use So Much Growth Regulator?

This picture shows a typical Perennial Ryegrass seedhead.  Note how it is growing.  It is very upright. 
NOW look at this picture of Perennial Ryegrass sprayed with the growth regulator Primo Maxx.

The seedhead is growing laterally.   The regulator changes the growth pattern and the turf requires less mowing, uses less water and yields less clippings. The result over time is a dense, very playable turf.  We use growth regulator on tees, greens and fairways.  It puts less stress on the mowing equipment and requires less mowing.  Doses of regulator range from 6-7 oz per acre on greens to 9 oz per acre on tees and 11 oz per acre for fairways.  A typical application lasts 2-4 weeks.  I thought everyone would find these pictures interesting.  The turf does turn yellowish the first application, then the plant seems to react better to heat and traffic stress.