Drone Spraying in Johnson County, IA for Corn, Soybeans and Covers

Drone spraying prices in Johnson County

Drone spraying in Johnson County, IA is billed per acre, per pass, application only. Iowa State University's 2026 custom rate survey, the first to include drones, put drone spraying at a $12.50 average with a range of $8–16. Operators listed for the county quote $12–18. Our rates:

Service	Typical rate	Notes
Corn fungicide	from $11/acre	Southern rust, gray leaf spot
Soybean fungicide or insecticide	from $11/acre	R3 passes
Rescue herbicide	from $12/acre	Where labeled for aerial use
Cover crop seeding	from $13/acre	Seed billed separately

Each visit has a $225 minimum. Product is billed separately. Quotes reflect field size, organic and specialty neighbors, homes nearby and the spray volume on the label.

Grain, hogs and small specialty farms

Johnson County had 1,212 farms on 259,760 acres in the 2022 Census of Agriculture, with $326.5 million in sales, 61% from crops.

Crop or livestock	2022
Corn for grain	98,578 acres
Soybeans	88,250 acres
Forage	13,838 acres
Hogs	162,301 head
Cattle	20,708 head
Goats	11,726 head

The county ranks first in Iowa for sheep and goat sales and second for fruit, tree nut and berry sales, and 7% of its farms are organic. Drone spraying in Johnson County works around those specialty fields as much as corn and soybeans.

What showed up in 2026

Iowa State's late-July 2026 update for this region reported southern rust in eastern Iowa at low pressure, with gray leaf spot and bacterial leaf streak the most common corn diseases. Corn was at R2–R3 and soybeans at R3, and growers were weighing fungicide calls. Scouting decides; when a pass is needed, a drone covers tall corn without wheel damage.

Amish, organic and local-food farms

About two-thirds of the Kalona Amish settlement, founded in 1846, lies in Johnson County. The county also runs a local foods program at the Historic Poor Farm, and 7% of farms sell directly to consumers. Iowa's Sensitive Crop Directory covers organic row crops and pasture, vegetables, berries, orchards, vineyards, Christmas trees and non-GMO crops of half an acre or more. Operators check it before every job and map those fields as no-spray zones.

Bees and timing

Under Iowa's bee rule, commercial applicators may not apply bee-toxic pesticides to blooming crops within 1 mile of a registered apiary between 8 a.m. and 6 p.m. Apiary registrations expire every December 31, so operators check current BeeCheck maps each season and plan early-morning or evening flights where needed.

Cover crops

About 19% of Johnson County farms already use cover crops and 41% use no-till. Iowa's 2026 cost-share pays $30 per acre for first-time users and $20 for returning users, up to 160 acres, plus $10 for no-till or strip-till and $3 for a nitrogen inhibitor. A $5-per-acre crop insurance discount is available instead for acres not enrolled in other cost-share. Drones seed rye or oats into standing corn and soybeans in late August and September.

Coralville Lake, Macbride and Hawkeye Wildlife Area

Coralville Lake, an Army Corps reservoir on the Iowa River completed in 1958, overtopped its spillway in 1993 and again in 2008, when it crested at 717 feet. Hawkeye Wildlife Area covers 13,500 acres near Swisher, where floodplain ground is leased for oats followed by cover crops, and Lake Macbride State Park adds 2,180 acres near Solon. Operators map the lakes, the Iowa River, wildlife areas and park land as no-spray zones and fly only in light wind blowing away from them.

Fields next to a growing metro

With more than 150,000 residents, Johnson County's farms sit close to homes around Iowa City, Coralville, North Liberty and Tiffin. Operators map houses, gardens, schools and wells as no-spray zones and choose droplet size for the wind. Iowa City Municipal Airport has no tower, and the Eastern Iowa Airport lies about 16 nautical miles northwest, so crews check airspace for every field.

Field conditions

Field condition	Ground sprayer	Spray drone
Iowa River bottoms after rain	Ruts, stuck rigs	No soil contact
Corn at R2	Crop damage	Flies above the canopy
Small fields near homes	Drift concerns	Mapped buffers
Soybeans at R3	Wheel-track losses	No crop contact

A Johnson County spray season

Window	Typical drone work
June	Rescue herbicide passes
Late July to early August	Corn fungicide on scouting
August	Soybean fungicide and insecticide at R3
Late August to September	Cover crops into standing crops

Iowa licensing for drone application

The Iowa Department of Agriculture and Land Stewardship (IDALS) certifies drone applicators through the 11F exam or Core plus a crop category and 11R, under an Iowa pesticide company license with comprehensive chemical insurance. Aircraft must be registered with the Iowa DOT, and out-of-state firms need an Iowa aerial consultant. The FAA requires Part 107, Part 137 and a Section 44807 exemption for drones of 55 pounds or more.