Crop Spraying in Henry County, IL by Drone for Corn and Soybeans

Crop spraying prices in Henry County

Crop spraying in Henry County, IL by drone is billed per acre, per pass, application only. Illinois drone rates run $10–18 per acre with about $13 typical in 2026, and Illinois operators profiled that year charge $12–15, including $12 for fungicide in northwest Illinois. Our rates:

Service	Typical rate	Notes
Corn fungicide	from $12/acre	Tar spot, VT–R3
Soybean fungicide and insecticide	from $12/acre	R3
Post-emerge herbicide	from $13/acre	Waterhemp rescue passes
Cover crop seeding	from $14/acre	Rye into standing crops

Each visit has a $250 minimum. Product is billed separately. Quotes reflect acres per trip, distance between fields, tree lines and the spray volume on the label.

One of Illinois's top farm counties

Henry County ranked ninth in Illinois for farm sales in the 2022 Census of Agriculture, at $508 million, and eighth for grain and oilseeds. Cropland covers about 92% of farmland.

Crop or livestock	2022
Corn	215,672 acres
Soybeans	169,354 acres
Forage	5,407 acres
Hogs	63,284 head
Cattle	15,392 head

The county also ranks seventh in Illinois for cattle sales and first for sheep and goats, and Kewanee still calls itself the Hog Capital of the World. Crop spraying in Henry County is mostly corn and soybean fungicide and insect work in July and August. With 117 farms over 1,000 acres and 424 under 50, jobs range from small hobby fields to big blocks.

Tar spot in northwest Illinois

Tar spot is established across north-central and west-central Illinois, where cool, humid weather and long leaf wetness favor it. It can cut yields by up to 50 bushels per acre in susceptible hybrids; Illinois losses averaged about 3% in 2024. University of Illinois guidance is one multi-mode fungicide pass between VT and R3. A drone flies over tasseling corn when a ground rig would knock it down.

Glufosinate-resistant waterhemp

In January 2026, University of Illinois and SIU scientists confirmed glufosinate-resistant waterhemp in three Illinois populations, including one in northern Illinois; about 20% of plants survived a full rate in the field. Their advice: use the full rate with proper carrier volume and additives, consider glufosinate plus 2,4-D choline on Enlist crops, and stop seed production. Drones help with rescue passes when rain keeps ground rigs out.

Dicamba: what drones don't do

EPA approved three over-the-top dicamba products in February 2026, and Illinois adds a June 20 cutoff, a no-spray rule above 85°F and a FieldWatch check. The federal labels also prohibit aerial application, so drones don't apply over-the-top dicamba. What drones can do is spray other products near dicamba-sensitive fields with tight buffers and coarse droplets.

Soybean insects and disease

Soybean passes are timed at R3. Frogeye leaf spot and white mold are the main fungicide targets in wet years, and soybean aphids are treated when counts reach threshold. Western corn rootworm beetles and Japanese beetles are checked on corn silks in July and August, so corn and soybean passes often run in the same weeks.

Cover crops: room to grow

Only 6% of Henry County farms used cover crops in the 2022 census, while 44% already use no-till. Drones seed cereal rye into standing soybeans or corn in late August and September, before leaf drop, so the rye is up by harvest without an extra trip across wet ground.

Hennepin Canal, rivers and neighbors

Field condition	Ground sprayer	Spray drone
Wet ground after rain	Ruts, compaction	No soil contact
Corn at tassel	Crop damage	Flies above the canopy
Fields along the canal trail	Drift risk	Mapped buffers
Soybeans at R3	Wheel-track losses	No crop contact

The Hennepin Canal Parkway State Park crosses the county, and Bishop Hill's historic district sits in the south. Illinois uses FieldWatch's DriftWatch and BeeCheck, and beekeepers register with IDOA, so operators check both before every job and map the canal, homes and gardens as no-spray zones.

Quad Cities airspace

Quad Cities International Airport sits in Class C airspace to the west, and fields near Colona, Coal Valley and Orion may need an airspace check. Kewanee Municipal Airport sits southwest of Kewanee, and ag planes still work the area in summer, so crews watch for low traffic. Operators check airspace for every field before takeoff.

A Henry County spray season

Window	Typical drone work
May to June	Post-emerge herbicide, waterhemp rescue
Mid-July to early August	Corn fungicide at VT–R3, beetles on silks
August	Soybean fungicide and insecticide at R3
Late August to September	Cereal rye into standing corn and soybeans

Illinois licensing for drone application

The Illinois Department of Agriculture (IDOA) requires commercial drone applicators to pass the Aerial General Standards exam plus a category such as Field Crops, and to file a certificate of insurance for for-hire work. The FAA requires Part 107, Part 137 and a Section 44807 exemption for drones over 55 pounds.