Drone Spraying or Boom Sprayer? Comparing Costs, Losses and Efficiency
Published: 29 October 2026
For decades the conventional boom sprayer has been the backbone of crop protection on farms. But rising fuel costs, soil compaction and difficult weather are leading more and more farmers to drones.
A spraying drone will not replace a boom sprayer in every situation, but at many key moments in the season it comes out ahead. Here is a detailed comparison.
Comparison: boom sprayer vs. drone
| Parameter | Boom sprayer | Agricultural drone (Agrodron) |
|---|---|---|
| Wheel-track losses | according to manufacturers' data, a few % of yield, especially with late applications | none – the drone does not touch the ground |
| Spray volume | 200–300 l/ha | 10–30 l/ha (according to the product label) |
| Wet field | often impossible – ruts, machine getting stuck | yes – flies over the crop, no need to enter the field |
| Tall crops (maize, canola) | limited – risk of crop damage | yes – flies above the crop |
| Soil compaction | yes – topsoil compaction | no |
| Difficult and irregularly shaped fields | difficult access | quick access, zonal spraying possible |
Main advantages of drone spraying
1. No in-crop losses and protection of soil structure
Heavy machinery means plants are driven over in the wheel tracks and the soil is compacted. The drone works without contact – spraying is done from the air, so the whole crop stays in the field and the soil is not compacted.
2. Working when you cannot get into the field
After heavy rain a sprayer has to wait, while fungal diseases and pests keep developing. The drone does not need firm ground – the application can be done on the planned date.
3. Savings in water and fuel
A drone usually uses 10–30 litres of liquid per hectare. The airflow from the rotors moves the leaves, which helps coverage, including the undersides of the leaves.
Formalities under control
When does a boom sprayer still make sense, and when should you combine both methods?
When the boom sprayer wins: on very large, regular fields and for jobs that need a large volume of liquid, a ground boom sprayer is often cheaper per hectare.
Combined approach – the best results: many farms use a sprayer for early treatments while the field is still trafficable, and a drone for:
- protecting maize and canola in tall crops,
- foliar applications when the field is too wet to drive on after rain,
- spot spraying on hard-to-reach or irregularly shaped fields.
See also: how much does drone spraying cost i how to apply crop protection products by drone in line with the rules.
FAQ – frequently asked questions
How much yield do I lose to sprayer wheel tracks?
It depends on the crop, the growth stage and whether the field has permanent tramlines. According to manufacturers' data, wheel losses are usually in the range of a few percent. They show up most with late applications in canola and tall maize.
Can you spray by drone after rain?
Yes. The drone does not enter the crop, so wet soil is not an obstacle. We apply plant protection products in line with the product label (Act 36 registration) and SACAA RPAS rules, following a plan prepared individually for each operation.
When is a boom sprayer cheaper?
On very large, regular fields and for applications that need a large volume of liquid. The best results come from combining both methods.
Book drone spraying for your farm
Boost your yield, save time and reduce losses caused by driving over the crop. See how precise aerial applications can be.
Request a quote