GPS for slurry spreading
Short answer
With slurry the hard part is finding where the last load ran out. Tractor GPS – Field Guidance maps every pass as you spread, so after each trip to the tank you come back to the exact spot, and lines at your bar width keep the passes even with a dribble bar or trailing shoe.
Updated · Oran Dynamics
Why the map matters more than the line
Slurry is spread load by load. Every time you leave the field to refill, you lose your place, and on grass a dribble bar or trailing shoe leaves very little to see. Tap PAUSE when the tank empties and the coverage map holds your place; RESUME when you're back and pick up the pass where the paint stops.
Setting it up
- Width: the bar width for a dribble bar or trailing shoe, or the effective spread width for a splash plate (measure it once).
- Plan the job (optional): in Work Log → Jobs, enter the rate and tank size; the app estimates the number of loads and the time.
- Line: set an A-B line along the first pass, or let the app lay out lines for a saved field.
- Log: each job saves area covered, time and the coverage map, which is a useful record of where and when slurry went out.
What to expect
Phone GPS is accurate to a metre or two on newer dual-frequency iPhones, up to about 5 m on older ones. That's ample for finding your place and keeping passes even at bar widths of 6–12 m. It doesn't record volumes from the tanker and doesn't connect to flow meters.
Questions
-
Yes. Each pass is painted on the map. Pause while you refill and the coverage stays put until you resume.
-
It records area, time and the coverage map. Volume isn't measured; the job planner can estimate loads from the rate and tank size you enter.
-
Yes. Enter the bar width as the working width.
Try Tractor GPS on your iPhone
A–B guidance, live coverage mapping and field boundaries — using the phone you already own.
Download the appRelated
- GPS for mowing, topping and rolling Mowing, topping and rolling with iPhone GPS: a map of what you've covered when you can't see it on the ground, straight passes at your working width, and area logged per job.
- GPS for drilling and planting: an honest answer Phone GPS is accurate to a metre or two at best, which is not enough to match drill bouts or plant rows. Here's what Tractor GPS – Field Guidance can and can't do for drilling, and what to use instead.
- Measure field acres on your iPhone Measure a field's area in acres or hectares on your iPhone: draw the boundary on the satellite map, or drive the field once and save it. Area and perimeter, saved per field.
- GPS app for spraying fields Use your iPhone as sprayer guidance: straight lines at boom width, a live map of what you've sprayed, tank fills planned per job. What it does well, and where phone accuracy runs out.