SNS
I believe someone mentioned using beta to control descents. Not a good idea.
Could you please explain why you think so?
Further, for landing, having a reduced power also reduces the landing distance and allows the airplane to decelerate slower.
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.
With a fully reversable propellor, engine speed is independent of forward thrust. 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.
Flight idle will give you more control everytime (if you use the rest of the power quadrant like 99.9% of us) and if your doing Ag on marginal strips with 50+ landings a day it is just a smart place to be.
Pretty hard to make the case that landing at flight idle, read higher power setting, makes for a shorter landing.
With all due respect you just don't know what your talking about. Don't forget this is an Ag thread.