Drone Spraying in Marathon County, Wisconsin for Dairy and Grain Farms

Drone spraying rates in Marathon County, WI

Drone spraying in Marathon County, WI is quoted per acre for application only; the herbicide, fungicide or seed is billed separately or supplied by you. Directory listings for the county show $11–22 per acre, with Wisconsin jobs most often landing around $16. Our starting rates sit just under that middle:

Service	Typical rate	Notes
Herbicide (burndown, post-emerge, spot)	from $14/acre	Corn, soybeans, alfalfa seedings
Fungicide (corn VT–R1, soybean R3, wheat heading)	from $15/acre	Most common July job
Insecticide (leafhopper, aphid, armyworm)	from $15/acre	Alfalfa regrowth and beans
Cover crop seeding (rye, oats, radish)	from $16/acre	Into standing corn or after silage

What moves the price: total acres per trip, the gallons per acre the label calls for, field shape and obstacles (silos, tree lines, power drops), and travel from the operator's base. A minimum of $275 per visit applies, so neighbors who book adjoining fields on the same day usually split that easily.

What Marathon County farms grow

Marathon is Wisconsin's largest county by area and one of its heaviest dairy counties. The 2022 Census of Agriculture counted 2,059 farms on 477,577 acres, averaging 232 acres each, with $579 million in sales. Livestock and products brought in $430 million of that, third in the state. Around 62,000 milk cows produced roughly 1.48 billion pounds of milk in 2021.

That herd drives the cropping plan. Corn covers about 83,973 acres, much of it chopped for silage, followed by soybeans on 67,481 acres, alfalfa and hay on 26,117 acres and wheat on 4,348 acres. Every one of those crops has a spray window that tends to arrive when the ground is too soft or the canopy too tall for a self-propelled rig.

Why drone application suits central Wisconsin ground

Marathon County fields sit on rolling glacial till with plenty of wet swales, woodlots and narrow strips between pasture and creek. A spray drone flies 8–15 feet above the canopy on an RTK-guided path, so it leaves no wheel tracks in silage corn and no compaction in alfalfa between cuttings.

• Tall corn at tassel. Fungicide timing for silage and grain corn lands at VT–R1, when most ground sprayers can no longer clear the crop.
• Wet springs. Post-emerge herbicide stays on schedule after a week of rain, instead of waiting for fields to carry a tractor.
• Odd-shaped fields. Point rows, contour strips and small parcels between farmsteads are mapped once and flown exactly to the boundary.
• Low carrier volume. Drones typically apply 2–3 gallons of water per acre, which means fewer tank refills and more acres per hour from a single trailer setup.

Spray calendar for Marathon County crops

Window	Crop	Typical drone job
Mid-May to June	Corn, soybeans	Burndown and post-emerge herbicide
June, after first cutting	Alfalfa	Potato leafhopper insecticide on regrowth
Mid-July to early August	Corn	Fungicide at VT–R1 for tar spot, northern corn leaf blight and gray leaf spot
Late July to August	Soybeans	R3 fungicide for white mold; aphid control when counts climb
August to September	Standing corn	Overseeding winter rye or oats before harvest
September to October	Silage ground	Rye seeding right behind the chopper

Tar spot first appeared in Wisconsin in 2016 and has since been confirmed in dozens of counties, so many growers now run the UW Tarspotter risk model before deciding on a July pass. Silage hybrids deserve a close look, because leaf disease cuts both tonnage and digestibility.

Working next to ginseng gardens

Marathon County grows the large majority of cultivated American ginseng in the United States; UW sources put the county at 90–95% of Wisconsin's crop. Gardens sit under shade structures or in woodlots, often right next to corn and soybean fields, and a single bed represents years of investment.

For drone crews that means three habits on every flight near a garden:

1. Mapping the shade structures and wooded beds as exclusion zones before the job is loaded.
2. Holding to a wind limit and choosing nozzles that produce coarser droplets on the field edge facing the garden.
3. Talking to the neighbor ahead of time, especially before fungicide or herbicide passes in June and July.

Ginseng beds themselves are not drone targets; the point is to keep a valuable crop next door untouched while your field still gets sprayed on time.

How a Marathon County drone job runs

1. Request. Share field location, crop, growth stage and acres, plus the product you plan to use or want sourced.
2. Field check. The operator reviews boundaries on satellite imagery and marks silos, power lines, tree lines and nearby sensitive sites.
3. Scheduling. Flights are set around wind, rain chance and temperature; early morning is common in July.
4. Application. RTK flight plans keep swaths overlapping evenly; batteries and tanks are swapped from a trailer at the field edge.
5. Records. You receive the as-flown map, product, rate, weather conditions and time of application.

Licensing and airspace around Wausau

Every crew booked through this site is an FAA Part 137-certified, state-licensed operation. Federal rules require a Part 107 remote pilot certificate, a Part 137 agricultural aircraft operator certificate and, for drones over 55 pounds, a Section 44807 exemption. In Wisconsin, anyone applying pesticides for hire needs commercial certification from the Department of Agriculture, Trade and Consumer Protection (DATCP), including the aerial applicator category that covers drones.

Airspace near Mosinee and Wausau

Central Wisconsin Airport in Mosinee is a towered field with Class D airspace while the tower is open (6 a.m.–10 p.m.), and Wausau Downtown Airport sits about nine nautical miles to the north. Fields inside that Class D area, such as parts of Kronenwetter and the farmland south of Mosinee, need FAA authorization before flight, which operators request in advance. Near Wausau Downtown, crews watch for low-flying airport traffic. Ask your operator to confirm the authorization when you book a job close to either airport.