DJI Agras T50: Payload, Spraying and Drift Factors
A grounded introduction to spray payload, droplet drift and operating conditions for agricultural drones, using the manufacturer's T50 specifications.
downwind drift distance ≈ wind speed × time droplets remain airborne; actual drift depends on droplet size and conditions
- DJI lists a 40 kg spraying payload and a separate 50 kg spreading payload for the Agras T50; they are not the same operating mode.
- Wind, droplet size, release height, evaporation and rotor flow affect where spray is deposited.
- A simple drift estimate is only a starting point. Follow the pesticide label, local aviation rules and the manufacturer's operating instructions.
Separate spraying from spreading specifications
DJI's T50 specifications list a 40 kg operating payload for the spraying tank and a separate 50 kg payload for spreading. These figures describe different equipment and operating modes. The drone's maximum takeoff weight also includes the aircraft, battery and other installed equipment, so it should not be confused with the liquid or spreading payload. Use the manufacturer's current regional manual and specification sheet to check the configuration, operating limits and recommended procedures for the actual aircraft.
Why spray can move away from the target
Spray drift depends on multiple interacting factors. Smaller droplets generally remain airborne longer and can move farther with wind; temperature and humidity affect evaporation, while release height and rotor flow influence the path to the crop. Crop canopy, nozzle settings, flight speed and the formulation also matter. A basic estimate of downwind travel multiplies wind speed by the time a droplet remains airborne. It is not a prediction of field performance because droplet trajectories and rotor flow are more complex than uniform wind.
Plan the operation responsibly
Check the product label and local rules before spraying. Confirm the allowable weather conditions, buffer areas, water protection requirements, airspace restrictions and any operator qualifications that apply in the operating region. Inspect the aircraft and spray system, calibrate the equipment according to the manufacturer's instructions, and avoid operating when conditions exceed the stated limits. This overview does not provide pesticide application advice. For a specific product or crop, follow the label and guidance from qualified agricultural professionals and the relevant local authority.
- This page does not present new field measurements or a validated crop-spray model.
- Actual drift and coverage depend on the crop, product, nozzle settings, weather, flight plan and operating procedure.
- DJI AGRAS T50 official specifications — https://ag.dji.com/t50/specs
- ISO 22866: field measurement of spray drift from plant protection equipment — https://www.iso.org/standard/36109.html