Posted 7/17/2017 07:07 (#6130924 - in reply to #6130837) Subject: RE: Know nothing about drones
Azul, Argentina
The most robust spraying drone is the DJI Agras 1, but the payload capacity is too small for industrial crops like corn, it's being used in orchads or horticural labors.
This is the manufacturer link http://www.dji.com/mg-1/info
For spraying operations i think you need a special FAA license, but i don't live in the US so please check this information.