Why spraying drones are entering Polish farms now

The Polish market for contract spraying has been dominated by self-propelled field sprayers and, on smaller plots, ATV-mounted tank systems. Both approaches face a structural problem: irregular field geometry. Across Małopolska and Podkarpacie, average field size falls below 1.5 hectares, and boom sprayers lose 15–25% of field area to headland turning and field-edge buffer strips.

Spraying drones operate differently. They fly a programmed path at 3–5 metres above the canopy, discharging atomised liquid through rotating-disc or ultrasonic nozzles at flow rates calibrated to match ground speed. The result is consistent application across odd-shaped plots with minimal headland loss and no crop trampling from wheel tracks.

The economics shifted decisively in 2024–2025 as Chinese-manufactured agricultural drones — primarily DJI Agras T50 and T40 variants — became widely available through Polish agricultural machinery distributors. Purchase prices for a complete system including charger, battery set, and flight planning software now start at around 90,000 PLN, a 40% reduction from 2022 levels.

Payload, tank size, and effective area per day

The most widely deployed spraying drones in Poland carry liquid payloads of 30–50 litres. At a typical application volume of 15 litres per hectare for foliar fungicides, a 40-litre tank covers approximately 2.7 hectares per fill. Battery endurance for most systems is 8–12 minutes per charge at full payload.

A well-organised spraying operation with a two-person crew — one pilot, one ground assistant handling batteries and refilling — can cover 100–160 hectares in a working day under favourable wind conditions (below 5 m/s). Operations involving significant ferry flying between non-contiguous fields reduce this to 60–90 hectares per day.

Application volumes and product compatibility

Drone application is not compatible with all registered plant protection products. In Poland, any pesticide applied by UAV must be specifically registered for aerial application under Rozporządzenie Ministra Rolnictwa i Rozwoju Wsi on plant protection product use. The current list approved for aerial application covers approximately 40 fungicide and herbicide formulations and is updated annually by the Ministry of Agriculture.

Products requiring application volumes above 200 litres per hectare (such as pre-emergence herbicides on mineral soils) are generally not suitable for drone application given current payload constraints. This limits drone spraying primarily to foliar fungicides, liquid fertilisers at low volumes, and some selective herbicides approved for low-volume application.

Regulatory requirements for spraying operations

Spraying operations with an agricultural drone in Poland require several overlapping authorisations:

  • UAV operator registration with PAŻP under EU Regulation 2019/947 (Category Specific, BVLOS for most agricultural operations).
  • A valid plant protection operator certificate (świadectwo kwalifikacji) issued by a provincial agricultural advisory office — this is separate from the UAV pilot licence.
  • Notification of spraying activities to neighbouring beekeepers at least 24 hours in advance, as required by Polish law on bee protection.
  • Ground water buffer compliance — all spraying operations must observe 5–20 metre no-spray zones around watercourses, as per Polish Water Law.

Failure to hold the plant protection certificate while operating a spraying drone is the most common administrative violation documented by WIORIN (Voivodeship Agricultural and Horticultural Inspectorate) inspectors. Fines range from 500 to 5,000 PLN per incident.

Variable-rate application: how it works in practice

The agronomic case for variable-rate drone application rests on prescription maps generated from prior drone or satellite surveys. A nitrogen prescription map for a wheat field is typically built from NDRE data collected 4–6 weeks earlier, processed into management zones, and converted to a spray file specifying target application rates by GPS coordinates.

The drone's flight controller reads the prescription file and adjusts pump output at each GPS waypoint to match the target rate. The accuracy of this process depends on GPS positioning quality (RTK is standard for precision operations) and on the calibration of the flow meter, which should be verified against a reference volume before each day's work.

In trials conducted at the Research Institute of Horticulture in Skierniewice (2024), variable-rate drone application of liquid nitrogen reduced total fertiliser use by 22% compared with flat-rate boom sprayer application, while maintaining equivalent or slightly improved yield uniformity across the trial plots.

Battery logistics: the underestimated bottleneck

A drone spraying system's practical daily output depends as much on battery management as on flight time. Most Polish operators running DJI Agras systems carry 6–10 battery packs per drone and use two charging stations powered from a generator or van-mounted power bank. Typical charge time from flat to full is 25–35 minutes per battery.

In summer conditions with ambient temperatures above 30°C, battery performance degrades noticeably, reducing both endurance and discharge capacity. Most professional Polish operators park batteries in insulated cool boxes between charge cycles when working in July–August heat.

The industry norm is to budget for one ground crew person per drone, whose sole responsibility is battery rotation, refilling, and equipment monitoring. Attempts to run a solo operation — one person piloting and managing logistics — consistently result in lower daily area coverage and higher error rates.

Choosing a contract spraying provider

For farm managers without their own drone equipment, the contract market offers a growing number of providers. The Polish Agricultural Aviation Association (PSLA) maintains a directory of licensed operators. Key questions to verify before signing a contract include:

  • Does the operator hold both a BVLOS authorisation and a plant protection certificate?
  • What equipment is being used, and what is its maintenance history?
  • How is the prescription file prepared, and who is responsible for agronomic decisions?
  • What happens in the event of a technical failure mid-field — is there a backup drone on site?
  • Is the operator insured for third-party liability covering accidental pesticide drift?

Contract rates in 2026 range from 120 to 180 PLN per hectare for standard fungicide application, depending on field complexity and operator location. This compares with 60–90 PLN per hectare for conventional boom sprayer application — the premium reflects the specialised equipment and compliance overhead.

Source references: Ministry of Agriculture Poland, Research Institute of Horticulture Skierniewice, WIORIN.

Last updated: March 18, 2026