Ag Drone Spraying in Grady County, OK for Wheat, Hay and Pasture

Ag drone spraying prices in Grady County

Ag drone spraying in Grady County, OK is priced per acre, per pass, application only. Oklahoma drone rates run $8–16 per acre with about $12 typical in 2026, and wheat work runs $12–16. OSU's latest custom rates survey put air application of herbicide at $10.20 per acre statewide. Our rates:

Service	Typical rate	Notes
Wheat insecticide	from $11/acre	Fall armyworm, aphids
Wheat fungicide	from $11/acre	Feekes 9–10.5
Bermuda hay insecticide	from $11/acre	Fall armyworm
Pasture herbicide	from $12/acre	Musk thistle, broadleaves
Watermelon fungicide	from $16/acre	Anthracnose program

Fields under 25 acres are billed as 25 acres. Product is billed separately. Quotes reflect acres per trip, cattle and fence layout, airspace near Chickasha and the spray volume on the label.

Grass, wheat and stocker cattle

Livestock brought in 87% of Grady County's $199.8 million in farm sales in the 2022 Census of Agriculture, ranking the county tenth in Oklahoma for livestock.

Land use or crop	2022
Pasture	394,398 acres
Cropland	241,656 acres
Forage hay	99,415 acres
Winter wheat	34,943 acres
Soybeans	7,954 acres
Cattle	128,974 head

Much of the county's wheat is grazed by stocker cattle through winter before going to grain or graze-out. Ag drone spraying in Grady County works around those cattle as much as around the crop.

Fall armyworm in seedling wheat

OSU reports rising fall armyworm pressure in Oklahoma wheat. The threshold is 3–4 larvae per foot of row, and treatment works best while larvae are under half an inch, since about 90% of the damage comes in the last two stages. Moths arrive by late June, generations overlap into October and November, and the first killing frost ends it. Early-planted grazing wheat is hit first. Labeled options include chlorantraniliprole, lambda-cyhalothrin and spinetoram, each with its own grazing interval.

Spraying wheat that cattle are grazing

1. Check the label's grazing interval before choosing a product; some allow grazing the same day, others require days or weeks.
2. Pull cattle for the flight, then return them when the interval is met.
3. Plan carryover: some pasture herbicides, such as clopyralid, pass through manure, and labels may require cattle to graze untreated ground before moving near sensitive crops.

Rust, aphids and barley yellow dwarf

OSU's best fungicide window for wheat is Feekes 9, flag leaf fully out, to Feekes 10.5, heads out. For stripe rust, spray before pustules reach the flag leaf. Over 20-plus years of OSU trials, fungicide averaged about a 10% yield gain. Barley yellow dwarf is spread in fall by bird cherry-oat aphids and greenbugs, often before they reach spray thresholds, so planting date matters as much as insecticide. Hessian fly can't be rescued with a spray.

Resistant ryegrass in Grady County wheat

OSU's 2025 herbicide resistance survey found Grady County Italian ryegrass resistant to quizalofop (Group 1) and imazamox (Group 2), but not glyphosate. Cheat, rescuegrass and jointed goatgrass showed some resistance across the state. Test suspect fields, rotate sites of action and treat small ryegrass before it tillers.

Hay meadows and pasture weeds

Grady County cuts nearly 100,000 acres of hay. Fall armyworms move into bermuda after summer rains and are treated when counts reach threshold. In pasture, musk thistle is sprayed as a rosette in fall or spring, with spring giving the best results before bolting in March and April. OSU notes that bermuda pasture weed control usually wraps up by mid-June.

Watermelons around Rush Springs

Rush Springs calls itself the Watermelon Capital of the World. OSU recommends preventive anthracnose sprays from bloom and early fruit set every 7–14 days, plus preventive programs for downy and powdery mildew. Melons are also highly sensitive to pasture herbicide drift, so operators keep wide buffers from melon fields during summer pasture work.

A Grady County spray year

Window	Typical drone work
Late August to November	Fall armyworm in seedling wheat and bermuda hay
Fall and early spring	Ryegrass and broadleaves in wheat, musk thistle rosettes
April to early May	Wheat fungicide at Feekes 9–10.5
May to mid-June	Bermuda pasture weed control
June to August	Watermelon fungicide programs, hay insects after rain

Suburbs, airports and neighbors

Field condition	Ground sprayer	Spray drone
Washita bottoms after rain	Ruts	No soil contact
Grazed wheat with cattle nearby	Gates and fences	Flies over fences
Fields next to new homes near Tuttle	Drift complaints	Mapped buffers, coarse droplets
Tall wheat at heading	Wheel-track losses	No crop contact

Chickasha Municipal Airport sits northwest of town, and homes keep spreading south from Oklahoma City into Tuttle and Blanchard. Oklahoma has no FieldWatch registry, so operators ask about neighbors' gardens, melons, vineyards and hives before every job.

Oklahoma licensing for drone application

The Oklahoma Department of Agriculture, Food and Forestry (ODAFF) licenses drone applicators under the Aerial (AIR) category with a use category such as Agricultural Plant. New aerial applicants must file an FAA Part 137 certificate and general liability insurance. Grady County is not one of Oklahoma's restricted-herbicide counties. The FAA requires Part 107 and a Section 44807 exemption for drones over 55 pounds.