Ag Drones: What They Do and What They Return per Acre

Ag drones do three jobs on a farm: they spray crops, they map fields, and they scout for problems. In the US, drones sprayed more than 16.4 million acres in 2025, and the average custom price fell to $13 an acre from $21 a year earlier, according to the American Spray Drone Coalition’s 2025 impact survey. What a drone returns per acre depends on the job, your acreage and what it replaces.

This guide explains what each type of farm drone does, what it costs to hire or own one per acre, and where the savings come from. It has dated survey figures, extension cost models, charts and a calculator you can fill in with your own numbers. For model-by-model prices, see our separate agricultural drone price guide.

What ag drones do on a farm

Farm drones are small unmanned aircraft. USDA’s Economic Research Service lists their main farm uses as crop mapping, livestock monitoring, land surveying, crop spraying and crop dusting, in its report Precision Agriculture in the Digital Era. With satellite positioning, a drone can tie each image or spray pass to an exact spot in the field.

The jobs split into two groups. Spray drones carry liquid or granular products. Mapping and scouting drones carry cameras or other sensors. They are different machines with different prices, rules and returns.

1. Spraying and spreading

Spray drones apply herbicide, fungicide, insecticide, foliar feed and cover crop seed. They are most useful where ground rigs struggle: wet soil, tall corn late in the season, small or odd-shaped fields, terraces and fields next to sensitive areas. A drone flies over the crop, so it leaves no wheel tracks.

Best for: fungicide on tall crops, spot treatment, cover crop seeding, and fields a ground sprayer cannot reach in time.

2. Mapping and surveying

Mapping drones fly a grid and stitch photos into one field map. With elevation data they can show low spots, drainage paths and terrace lines. Growers and agronomists use these maps to plan tile drainage, water flow and zone management.

Best for: drainage planning, plant stand counts, field boundary checks and building management zones.

3. Crop scouting and health imaging

Scouting drones carry a normal camera or a multispectral camera. A multispectral image shows how green and dense the plants are, which helps you find weak areas before they are easy to see from the road. The image shows where the crop differs. It does not show the cause. Someone still has to walk to the spot and check for pests, disease, water or nutrient problems.

Best for: checking a problem area after a storm, confirming a satellite alert at close range, and trial plots.

4. Livestock and property checks

Ranchers use small camera drones to check water tanks, fences and stock across large pastures. The return is time saved on driving, which is easy to measure on your own place.

▶ How AI drones and drone services are used on farms for spraying, mapping and monitoring. · 2:33

How many farms use drones

Use is growing fast from a small base. The AAPCO presentation on drone pesticide application (March 2026) says drones sprayed 3.7 million acres in the US in 2023, across 41 states and 50 crops. The ASDC survey put the 2025 total at over 16.4 million acres, up 58.7% on 2024.

Chart

US cropland sprayed by drone

million acres treated, 2023 and 2025

The same survey says growth came from more operators, not more work per operator. The FAA count of approved Part 137 drone operators rose 58.3% to 1,710, while the average stayed flat at about 9,584 acres per operator. The AAPCO slides note that the FAA reported 40 approved Part 137 waivers for ag drones in 2021.

Among farmers, use is still a minority. Iowa State University’s Iowa Farm and Rural Life Poll 2025 asked farmers about drones, and Farm Progress reported in April 2026 that many Iowa farmers remain uncertain about them.

USDA data from earlier years show how new the technology is on large row crop farms. ERS found that use of drones, aircraft or satellite imagery stayed well below guidance systems, which are used on over half of acres for the main row crops (USDA ERS, survey years 2016 to 2019).

What ag drones cost per acre

For spraying, the clearest number is the custom rate. The ASDC survey found the average price per acre sprayed fell 38%, from $21 in 2024 to $13 in 2025. The survey links the fall to more competition, including from operators without Part 137 approval. These are survey averages reported by operators, not quotes, and prices vary by crop, product and region.

Chart

Drone spraying cost per acre: survey prices vs modeled costs

US dollars per acre; survey averages and extension model estimates

For owning, the University of Missouri Extension guide G1274, Economics of Drone Ownership for Agricultural Spray Applications, puts owner-operator drone cost at about $12.27 per acre, against a typical custom-hire price of about $16 per acre, with the low end of custom hire near $7.39 per acre. These are modeled estimates under the guide’s assumptions, so check the guide’s acreage and drone before you compare.

The owner’s biggest costs are fixed: depreciation, interest and batteries. That is why cost per acre falls quickly as acres rise. A drone that sprays only a few hundred acres a year costs much more per acre than the custom rate.

Hardware prices change often, and supply has been tight. The ASDC survey estimated new spray drone sales in the US fell about 59%, from about 8,950 units in 2024 to about 3,711 in 2025, after import restrictions on DJI. For current models and dealer prices, see the drone price page rather than relying on a figure here.

Mapping and scouting costs

Camera drones cost far less than spray drones. The main costs are the aircraft, a sensor if you need multispectral images, software to stitch maps, and time to fly and review. Many farms hire an agronomist or service provider who flies once or twice a season. Ask for a written per-acre quote with the date, and ask what you get: raw images, a stitched map, or a map with a written report.

Chart

US spray drone market: 2024 vs 2025

new spray drones sold in the US, units (estimate)

Where the return per acre comes from

A drone pays back in four ways. Each can be checked on your own farm.

1. No wheel tracks. A ground sprayer in a standing crop can flatten rows. A drone does not. The gain is the yield you would have lost in the tracks.
2. Timing. When soil is too wet for a ground rig, a drone can still apply a fungicide or insecticide on time. The gain is the yield you would have lost to a late pass.
3. Less product. Spot spraying treats only the weedy or diseased area. The gain is the product you do not buy.
4. Less scouting time. Imaging helps you walk to the right places first. The gain is labor and fuel saved.

Targeted spraying shows what spot treatment can save. In a field-scale demonstration by Iowa State University Extension, a commercial precision spray system on five soybean fields totaling 415 acres saved 76% of post-emergence herbicide on average, about $15.70 per acre. Savings by field ranged from 43.9% to 90.6% and depended on weed pressure, as described in Precision Spraying Technology (Iowa State, August 2024). That trial used a ground spray system, not a drone, but the same logic applies to drone spot spraying: the fewer weeds, the bigger the saving.

Not every field will see these gains. A clean field gains little from spot spraying, and a dry season gives a ground rig plenty of time. That is why the calculator below lets you enter each gain yourself.

Chart

Herbicide saved by targeted spraying

percent of post-emergence herbicide saved, five Iowa soybean fields (415 acres, ground precision sprayer)

Hire or own an ag drone

Hiring makes sense when you spray only a few hundred acres a year, when your spray windows are short and you cannot spare a trained crew, or when you do not want to handle the product yourself. The Missouri model is one guide; your own break-even depends on your acres, custom rate and costs.

Owning makes sense when you spray enough acres to spread the fixed cost and you have staff who can fly, mix and maintain safely. Owners also carry the certificates, records and pesticide licensing.

This is not financial advice. Get dealer quotes and talk to your lender or adviser before you buy.

Try the numbers for your own farm below.

Rules for flying farm drones

In the US, spraying from a drone is an agricultural aircraft operation. The FAA page on dispensing chemicals and agricultural products with UAS says operators need an exemption, a Part 137 certificate and an air traffic authorization, and must follow the relevant parts of 14 CFR. Basic steps include a Remote Pilot Certificate and registering the drone with the FAA. Pesticide applicator licensing is set by each state.

In Canada, Transport Canada’s drone safety pages cover pilot certificates, registration and special permission for operations outside the standard rules. In the UK, Europe and Australia, national aviation and pesticide regulators set separate rules for spraying from the air, so check both before you fly.

Always follow the product label and local rules. Some labels do not allow aerial application, and drift rules apply to drones as they do to planes.

Limits of ag drones

• Wind. Spray drones need calm conditions to keep drift down, which shortens the usable spray window.
• Payload and battery. A drone carries far less than a ground sprayer. Large farms need several batteries, a generator and a helper to keep it flying.
• Supply. Import restrictions on some makers have made new drones harder to get in the US, according to the ASDC survey.
• Skills. Flying, calibrating and mixing take training. Mistakes with pesticides carry legal risk.
• Coverage for scouting. A drone covers one field at a time. For whole-farm checks every few days, satellite images are cheaper per acre, and drones work best to look closer at the spots satellites flag.

▶ Why clouds block normal satellite photos and how radar satellite imagery gets around it. · 2:37

Drones and satellite monitoring together

Satellites and drones do different jobs. A satellite revisits every field on a schedule, which helps you spot change across the whole farm. A drone gives a sharper image of one field on the day you fly, and a spray drone can treat the problem area.

A simple workflow is to check satellite crop health maps each week, send a scout or a drone to the areas that change, and then treat only those areas. Farmonaut Satellite + AI Farm Monitoring System provides the satellite step: you draw your fields once and see vegetation maps through the season in the web and mobile app. Large estates and advisers can manage many farms in the agro admin dashboard, and developers can pull the same data through the satellite and weather API.

Related pages on our site: crop loan and insurance checks, carbon footprinting, fleet management and product traceability. For drone buying guides, see agriculture UAV drones ranked, crop spraying drones and GIS and LiDAR spray vs mapping drones.

▶ Six plain steps to start precision farming, from field maps to satellite monitoring. · 4:18

How we checked the numbers

We used the ASDC 2025 impact survey and the AAPCO presentation for US use and custom prices, the University of Missouri Extension guide for ownership costs, Iowa State University for targeted spraying and farmer use, USDA ERS for adoption, and the FAA and Transport Canada for rules. Where a figure comes from an industry group rather than a government count, we say so. The old version of this page gave cost and yield ranges with no source; we removed them.

FAQ

Are ag drones worth it for a small farm?

Often it is cheaper to hire. The Missouri Extension guide modeled owner costs of about $12.27 an acre against a $16 typical custom rate, and owner costs rise as acres fall because the fixed costs are spread thinner. On a small acreage, a custom service tends to cost less per acre than owning.

How much does drone spraying cost per acre?

The ASDC survey found an average of $13 per acre in 2025, down from $21 in 2024. These are operator-reported averages, so get a dated written quote for your crop and product.

Do I need a license to spray with a drone?

In the US, yes. The FAA requires a Remote Pilot Certificate, drone registration, an exemption, a Part 137 certificate and an air traffic authorization. Your state sets pesticide applicator licensing. Follow the product label.

Can a drone find pests and disease?

A camera drone shows where plants look different. It cannot tell you the cause on its own. Walk the spot, take samples if needed, and ask your agronomist before you treat.

Are satellites or drones better for crop monitoring?

They work best together. Satellites cover every field on a schedule at low cost per acre. Drones give a closer look at the spots that change and can treat them.