Drone Spraying in Garfield County, OK for Wheat, Canola and Sorghum

Drone spraying rates in Garfield County

Drone spraying in Garfield County, OK is priced per acre, per pass, application only. Oklahoma drone rates run $8–16 per acre with about $12 typical, and Oklahoma State University's custom rates survey put air application of herbicide at $10.20 statewide and $12.58 in western Oklahoma. Our rates:

Service	Typical rate	Notes
Wheat herbicide	from $11/acre	Ryegrass, cheat, broadleaves
Wheat fungicide	from $11/acre	Flag leaf, Feekes 10.1
Wheat and canola insecticide	from $11/acre	Aphids, diamondback moth
Sorghum and soybean insecticide	from $12/acre	Sugarcane aphid, headworm
Pasture weed control	from $12/acre	Thistles, broadleaves

Fields under 20 acres are billed as 20 acres. Product is billed separately. Quotes reflect acres per trip, distance between fields, airspace near Enid and the spray volume on the label.

The Wheat Capital's home county

Enid calls itself the Wheat Capital of the United States, and its elevators hold some of the largest grain storage in the world. Garfield County ranked second in Oklahoma for crop sales in the 2022 Census of Agriculture.

Crop or livestock	2022
Winter wheat	218,645 acres
Hay and haylage	47,280 acres
Soybeans	38,089 acres
Grain sorghum	14,753 acres
Corn	13,118 acres
Cattle	65,380 head

The county's 957 farms average 676 acres, and 19% run more than 1,000. Drone spraying in Garfield County starts with wheat in March and runs through sorghum in August.

Stripe and leaf rust: protect the flag leaf

In OSU's 2024 wheat fungicide trial, the untreated check yielded 51.7 bushels per acre, while the best program yielded 87.0. The winning programs all included a flag-leaf spray at Feekes 10.1, and sprays made only at green-up failed. When rust shows up in southern Oklahoma or north Texas in April, Garfield County fields can be next within weeks, and a drone keeps fungicide on schedule when fields are muddy or a ground rig would run down the crop.

Aphids, mites and what a spray can't fix

OSU thresholds for the main wheat insects:

• Bird cherry-oat aphid: 25–30 per tiller before heading costs about 5% yield, and 50 or more about 10%. It also spreads barley yellow dwarf.
• Greenbug: OSU's Glance-N-Go app counts infested tillers and parasitized "mummies" to set the call. Outbreaks follow mild winters and cool springs.
• Russian wheat aphid: a spring pest, treated by percent of infested tillers.

Two pests can't be rescued with a spray. Hessian fly has no spring rescue treatment, and wheat streak mosaic, spread by the wheat curl mite, is controlled by killing volunteer wheat at least two weeks before planting.

Resistant Italian ryegrass in Garfield County

OSU tested about 1,500 grass samples across Oklahoma wheat counties. Italian ryegrass was resistant in 19 of 32 counties, and 77% of populations resisted at least one herbicide tested. Garfield County ryegrass showed resistance to quizalofop (Group 1) and imazamox (Group 2), the active ingredients behind CoAXium and Clearfield systems. That makes product choice and timing more important than ever:

1. Test suspect fields before choosing a program.
2. Rotate sites of action and add residuals where labels allow.
3. Treat small ryegrass in fall or early spring, before it tillers heavily.

Winter canola insects

Winter canola fits Garfield County wheat rotations, and it brings its own pests. OSU guidance treats aphids when 20% of racemes are infested from bud to early bloom; seed treatments usually hold until February or March. Diamondback moth is scouted from bolting, using thresholds of 10–15 larvae per square foot at early flowering and 20–30 at the pod stage. Flowering canola is too tall and brittle for a ground rig, which makes it a natural fit for a drone.

Sorghum aphid and chinch bugs

Pest	OSU threshold	Note
Sorghum (sugarcane) aphid	25% of plants with 50–125 aphids per leaf	Most damage from boot to soft dough; avoid pyrethroids
Chinch bug, seedlings under 6 inches	2+ bugs on 20% of plants	Common after wheat harvest
Chinch bug, plants over 1 foot	10+ per plant	Moves in from wheat stubble

Vance Air Force Base and Enid airspace

Vance Air Force Base sits about 4 miles south of Enid, and Enid Woodring Regional Airport lies to the southeast, both inside Class D airspace. An FAA notice bans drone flights over the base from the surface to 400 feet. Commercial drone work in Vance's Class D or E airspace needs FAA authorization reviewed by Vance airspace managers, and Vance training jets fly low-level routes over northwest Oklahoma almost every day. Operators check airspace for every field, file approvals ahead of time and stay at or below 400 feet.

Oklahoma licensing for drone application

The Oklahoma Department of Agriculture, Food and Forestry (ODAFF) licenses drone applicators under the Aerial (AIR) category, paired with a use category such as 1A Agricultural Plant. New aerial applicants must file an FAA Part 137 certificate, list each aircraft and show general liability insurance. The FAA also requires Part 107 and, for drones over 55 pounds, a Section 44807 exemption. Labels that prohibit aerial application also rule out drones.