How successfull is weed spraying with airplane?

[Hopperbin]

650-65R38 , 100 foot boom. So crop damage really is minimal maybe looks worse. The rut under water will smooth out, its the ruts in the surface mud give problems, can harvest same direction as spray ruts, and next year will be gone again until do it all over again.

[sumdumguy]

Aerial application is atough job. Thelanes have
improved a lot. GPS information is recorded and
can be reproduced in court to prove every pass
and turn a pilot makes, which direction the wind
is coming from and where your chemical is going.
I talked to my aerial applicator friend and they
have sprayed hundreds of thousands of acres for
ten years and have had one complaint. turned
out the complainer sprayed his own crop twice
with way too heavy rate.