Boom & valves
Rounded to 1 nozzle(s) per section = 50 cm.
At 12.0 km/h the valve opens 10 ms = 3.3 cm before each weed and closes 10 ms = 3.3 cm after it, so every weed gets this extra spray margin in front and behind.
Weeds
Spatial distribution
Uniform random is the conservative case. Real fields are usually patchy, which saves more.
Farm & sprayer
Simulation
Result on one hectare
Your farm — 500 ha
Refill time saved
0.0 h
0 fewer refill stops, 0% less refill time
Total job time saved
0.0 h
0%
Herbicide cost saved
€0
Range if every hectare behaved like the P95 / P5 simulated hectare: €0 – €0
Water & mix not hauled
0 L
| Broadcast | Spot spraying | Difference | |
|---|---|---|---|
| Liquid sprayed | 75.0 m³ | 75.0 m³ | 0 L |
| Herbicide cost | €22,500 | €22,500 | €0 |
| Hectares per tank | 20.0 | 20.0 | ×1.0 |
| Tank fills | 25 | 25 | 0 |
| Refill stops time | 12.0 h | 12.0 h | 0.0 h |
| Driving time | 24.8 h | 24.8 h | 0.0 h |
| Total job time | 36.8 h | 36.8 h | 0.0 h |
Saves this simulation with its parameters and the legal notes – choose “Save as PDF” in the print dialog.
Saving vs. weed density
Same boom and valve settings, density varied. The dot marks your density.
Saving vs. section width
At your weed density, with more nozzles sharing one valve.
How the simulation works
- Weeds are placed on a 1 ha plot as a Poisson process (uniform random) or a Thomas cluster process (patchy). Weed diameters vary ±50% around the mean.
- Each nozzle watches a lane as wide as the nozzle spacing. A weed opens every section whose lanes it touches, from the safety distance before it to the safety distance after it (safety time × speed).
- Overlapping openings in a section merge. Liquid use is proportional to valve-open time, so the open share of the travelled distance is the share of herbicide used compared to broadcast spraying.
- The run is repeated with new random fields; the spread gives the P5–P95 range. Farm figures scale the mean result by the area; refill stops count every tank fill after the first one.
Indicative simulation only, not a guarantee. Real savings depend on the actual weed distribution, detection accuracy, valve response, boom height, driving pattern and product label requirements.