I understand it's an ag thread, and I'm approaching it as an ag pilot.
Could you please explain why you think so?
Why do I think coming over the gate into a ground or reversing range in flight is a bad idea? Are you serious?
How can a slower decelerating aircraft possibly have a reduced landing distance??? If you mean't to say 'faster deceleration' your still wrong for a fully reversable PT6.
My wording was off. I meant to say "Further, for landing, having a reduced power also reduces the landing distance and allows the airplane to approach slower float less or not at all, and stop sooner."
I've seen few applications for going into deep reverse in an ag airplane. For one, I don't do anything with reverse with the tail still in the air, and once it comes down, I'm stopping fairly quickly anyway.
Granted, if you never go into Beta or reverse ground idle is going to give you the shortest landings, but I'm sure your car comes with a reverse gear. Do you choose not to use that as well.
My airplane is not a car. The comparison is senseless. Do you put your car in reverse while moving forward? Of course not...the closest comparison you might make is using your brake in a car, to using reverse in an airplane. However, the airplane already has brakes.
On loose surfaces, I avoid reverse. On approach, I have a slower approach, less float, and put the wheels on the ground more easily at a slower speed with ground idle, than flight idle. This being the case, I have less energy to dissipate. Once the mains are on the ground and I start to apply forward pressure, I bring up the flaps and the tail settles. I can use some reverse there, but I seldom need much. I have no need to be in flight idle.