After many searches and researches, I found that among all the DJI drones DJI AGRAS MG-1P is most suitable for my case.

DJI AGRAS MG-1P DRONE- Ready to Fly Bundle includes two batteries and one charger. The DJI MG-1P drone can fly automatically. This drone is much faster than conventional methods such as using a tractor to spray pesticides or workers. Also, One person can operate five drones simultaneously.

A single MG-1P controller can control up to five MG-1P aircraft simultaneously, doubling the efficiency of single-pilot operations. This new intelligent remote controller extends the control range to up to 3 km and supports high-resolution video transmission within that range, ensuring flight safety. The new remote controller also supports 4G wireless communications, an interchangeable battery, and a new antenna design, providing even more convenience for daily operations.

After purchasing the Talos drones company allowed me to receive free on-site training to learn how to operate the DJI AGRAS MG-1P SPRAYER DRONE.

Flight Performance
Stable, Reliable, and Worry-Free
With eight rotors, MG-1P Series Agriculture Drones employ advanced propulsion and control algorithms to ensure flight safety even if one arm or motor breaks during flight. The motor drive system features a redundant communication mechanism that allows the system to reroute control signals during operation if necessary.

Hi!
You might be better off posting your question in the 'products' section of this forum.
That is way more active.