Crop Spraying in Bexar County, TX

Crop and brush spraying rates in Bexar County

Crop spraying in Bexar County, TX covers more than row crops. The 2022 USDA Census counted 2,107 farms here, and forage is the largest crop at about 17,000 acres, followed by wheat (7,400), corn (4,856) and grain sorghum (2,438). Drone operators also treat pasture, mesquite and huisache brush on ranches south and east of San Antonio. The rates below are starting points for a single pass with a drone sprayer. They're set at or slightly below what Texas operators publicly quote for each job type.

Service	Typical rate	Notes
Herbicide on wheat, corn or sorghum	from $11/acre	2–3 gal/acre, open fields
Fungicide or insecticide on grain crops	from $12/acre	Rust, aphids, earworm passes
Coastal bermuda hay weed or armyworm pass	from $12/acre	Timed between cuttings
Broadcast pasture weed control	from $13/acre	Croton, ragweed, broadleaf weeds
Mesquite and huisache brush spraying	from $27/acre	Higher carrier volume, dense canopy
Dry spreading: fertilizer or cover crop seed	from $14/acre	Rate depends on product weight

Several things move a quote up or down. Brush density changes how many gallons each acre needs. Small or oddly shaped tracts need more turns and reloads. Live oak mottes, power lines and nearby homes reduce how much of a field can be sprayed in one straight run. Distance from the staging point matters too. Most operators set a 20-acre minimum per visit. Smaller tracts are often scheduled on the same day as nearby jobs so the trip makes sense for everyone. Chemical cost is quoted separately unless the operator supplies the product.

Mesquite, huisache and pasture weed spraying in Bexar County

Southern and eastern Bexar County sits on the edge of the South Texas brush country. Unmanaged pasture there fills with honey mesquite, huisache, prickly pear and annual broadleaf weeds within a few seasons. Timing decides whether a broadcast herbicide pass actually kills brush or only burns the leaves.

Target	Best window	What operators watch for
Honey mesquite	Late spring to early summer	Soil above 75°F at 12–18 inches, leaves fully dark green
Huisache	September to November	Late-summer flush finished, soil still above 75°F
Woolly croton, ragweed	Spring, plants under 4 inches	Treat before seed set and before plants harden
Prickly pear	Warm season	Product choice per label, often follow-up treatment needed

A drone flies a few feet above the canopy. Its rotor downwash pushes spray into dense mesquite rather than drifting across it. Pastures with rock outcrops, gullies or a scattered tree canopy are hard for ground rigs to cross, but a drone treats them without leaving tracks. On mixed tracts, operators can switch between broadcast passes over open grass and spot work on scattered brush in the same visit.

Crop spraying for Bexar County hay, wheat, corn and sorghum

Grain and hay fields in Bexar County are generally smaller than those on the High Plains. Many have tree lines, houses or roads on at least one side. Here's what operators typically handle for each crop:

• Coastal bermuda and other hay. Broadleaf weed control in spring green-up and fall armyworm passes from late summer into fall. Applications are scheduled around cutting dates so pre-harvest intervals fit the next bale.
• Winter wheat and oats. Broadleaf herbicide passes in late winter, then fungicide for leaf rust and stripe rust if spring weather turns humid. Greenbug and other aphid treatments are added when scouting calls for it.
• Corn. Post-emergence herbicide before canopy closure, plus fungicide or insecticide passes around tassel when growers are watching for corn earworm and leaf disease.
• Grain sorghum. Sugarcane aphid and headworm treatments from boot through soft dough. This is when a tall crop makes ground spraying slow and damaging.

Spraying from the air means no wheel tracks through standing wheat or tasseled corn. It also lets crews work fields that are still soft after a South Texas thunderstorm.

Drone, ground rig or airplane: how they compare on Bexar ground

Factor	Spray drone	Ground sprayer	Manned aircraft
Crop damage	None	Wheel tracks through the crop	None
Wet or rocky fields	Can be sprayed	Often can't be entered	Can be sprayed
Small or odd tracts	Well suited	Slow at headlands	Usually needs large blocks
Spray height	A few feet above the canopy	Boom height	Much higher passes
Water per acre	Low carrier volume	High carrier volume	Low to moderate

Drones also map each field before flight. Operators draw no-spray boundaries around houses, stock tanks and gardens, and the drone follows that flight plan pass by pass. In a county where crop ground often borders subdivisions, that precision affects whether a job is possible at all.

Small tracts and wildlife-valuation land around San Antonio

About 68% of farms in Bexar County are under 50 acres, according to the 2022 Census of Agriculture. Many are 10- to 40-acre places near Helotes, Elmendorf, St. Hedwig and Somerset. They often run a few cows or a hay meadow, or are managed for wildlife. Owners have trouble getting these tracts sprayed: larger contractors skip them, and a backpack sprayer is unrealistic beyond a few acres.

Drone crews handle these smaller places well. Typical jobs include:

• Clearing weeds from a hay meadow ahead of the first cutting
• Thinning huisache along a creek bottom
• Spraying fence lines and around pens
• Selective brush work that leaves cover for deer, quail and songbirds

Brush management is one of the habitat-control practices Texas recognizes for wildlife-use open-space valuation. Owners on that status can keep the dated application records the operator provides with their management plan.

North Bexar County: spraying over the Edwards Aquifer recharge zone

The Edwards Aquifer recharge zone crosses the northern part of the county, in the hill country around Helotes and the land north of Loop 1604. On these karst soils, water can reach the aquifer quickly through fractures, caves and sinkholes. Some herbicide labels set setbacks from wells and sinkholes, so operators locate these features during field mapping and draw no-spray buffers around them. Low drift and precise boundaries are a real advantage on these tracts. Landowners should point out every water well, cave opening and sinkhole when they book.

Getting a crop spraying quote in Bexar County TX

1. Describe the job. Send the location, approximate acreage, crop or pasture type and the weed, brush or pest you're seeing.
2. Get matched. A local FAA Part 137-certified, state-licensed operator reviews the tract on satellite imagery and confirms the product, rate and timing window.
3. Approve the quote. You see the per-acre rate, any product cost and the planned date before anything is scheduled.
4. Application day. The crew maps the boundaries, sets buffers and flies the field during low-wind hours.
5. Records. You get an application record listing the product, rate, acres treated and weather at the time of spraying.

Licenses behind every Bexar County application

• FAA Part 107: the remote pilot certificate every drone pilot must hold.
• FAA Part 137: the agricultural aircraft operator certificate required to dispense pesticides or other substances from the air.
• Section 44807 exemption: needed for spray drones heavier than 55 pounds, which covers most current ag models.
• Texas Department of Agriculture: a commercial pesticide applicator license with the aerial category for anyone applying products for hire in Texas, plus the financial responsibility (insurance) coverage the state requires.

Before booking, ask for the operator's TDA license number and Part 137 certificate. Every operator matched through this site holds both.