Short answer: Three FLYZOR drones carry a spreading box instead of the liquid tank: the F52 (60 kg), the F72 (80 kg) and the F92 (170 L). They spread granular fertiliser, rice seed, cover-crop seed and feed between 1 and 10 mm. Calibrate each material on a test strip, and the same drone that sprays in one season spreads in the next.
Why spread with a drone
Top-dressing fertiliser by hand is slow and uneven, and tractors cannot enter flooded paddies or tall crops. A drone spreads from above, follows the planned route and records which strips are done. For spray contractors, a spreading box turns the quiet months between spray seasons into paid work.
Spreading boxes compared
| Drone | Spreading box | Granule size |
|---|---|---|
| F52 | 60 kg | 1–10 mm |
| F72 | 80 kg | 1–10 mm |
| F92 | 170 L | 1–10 mm |
A box rated in litres holds a different weight for each material. Dense fertiliser granules weigh more per litre than seed, so the safe load changes. We confirm it for the materials you plan to use.
What you can spread
- Granular fertiliser: urea, compound fertiliser and slow-release granules, within the 1–10 mm range.
- Seed: direct-seeded rice, cover crops and pasture seed.
- Feed: pellets for fish ponds.
Powders, sticky or very irregular materials do not flow well through a spinner and are not recommended.
Calibration in four steps
- Weigh a known amount of the material and load it.
- Set the target rate (kg per hectare) and the spread width on the ground station.
- Fly a test strip of known length and catch or weigh what lands, or measure how much material was used for the strip area.
- Adjust the gate opening or spinner speed until the measured rate matches the target, then repeat for each new product.
A worked example
A contractor top-dresses 100 ha of rice with urea at 100 kg/ha:
- Total material: 100 ha × 100 kg = 10 000 kg.
- With an 80 kg box on an F72, that is about 125 box loads.
- At about 3 minutes of flight plus 2 minutes of refilling and battery swap per load, that is about 10 hours of work, or one long day or two short days.
These figures are for planning only. Field shape, distance to the loading point and crew speed change the result.
Cleaning and storage
Fertiliser is corrosive. After spreading, empty the box, brush and rinse it and the spinner, and dry everything before storage. Store fertiliser and seed away from batteries and chargers.
Next steps
Tell us which materials you spread, the rates and the area per season. We recommend the drone and box and include spare spinner parts in your first order. See also starting a drone spray service.
