Precision Farming Equipment: 10 Tools and the Evidence

Precision farming equipment is any machine or device that measures differences inside a field and then steers, seeds, sprays, waters or harvests to match them. Auto-steer guidance is among the most used: USDA found it on 58% of US corn acres in 2016, up from 5.3% in 2001. The profit gains USDA reports are modest: net returns on corn farms rose an estimated 1.1% to 1.8%, using 2010 survey data.

This guide covers 10 common types of smart farming tools, from GPS-guided tractors to robots. For each one you get the job it does, the evidence, the farm it suits and what to check first. You can also test a guidance or section-control purchase on your own acres with the payback calculator. For the full background, read our explainer on what precision agriculture means.

Precision farming equipment at a glance

The table sums up all 10. Each tool has its own section below with its source. The evidence column shows what was measured, and the size and quality of that evidence vary widely.

How widely is precision agriculture equipment used?

The most detailed crop-by-crop US numbers we found come from the USDA report Precision Agriculture in the Digital Era (February 2023). It draws on farm surveys for one crop per year, so the corn figures are from 2016 and the cotton figures are from 2019. Use them as a dated baseline and not as today’s level.

Chart

Precision tools on US corn acres

Percent of planted corn acres, USDA survey, 2016

Use climbs sharply with farm size. On US corn farms in 2016, guidance was used by 10% of the smallest group and 73% of the largest. Fixed costs explain part of this, because a kit costs less per acre when it covers more acres. A University of Illinois analysis in farmdoc daily (January 2026) makes the same point, and adds that dealers remain the main route for installation, calibration and repairs.

In England, the Defra Farm Practices Survey (October 2019) shows these shares among farms where each method applied: soil mapping on 29%, variable rate application on 25%, yield mapping on 17% and controlled traffic on 8%. Among farms not using one or more methods, 48% thought they were too expensive or not cost effective.

Chart

Corn farms using each tool, by size

Percent of farms, 2016. Smallest: under 200 cropland acres. Largest: over 1,725 acres

The 10 types of precision farming equipment

The order is ours and is not a ranking: steering first, then planting, water, scouting, power, spraying, data, robots, harvest and finally rate control.

1. GPS-guided tractors and auto-steer

Auto-steer uses satellite positioning to hold the tractor on a set line. Our guide to GPS guidance systems for tractors covers the kit options in depth. An earlier USDA study estimated that guidance raised corn farm operating profit by 2.5% and net returns by 1.5% (USDA ERS, 2016, using 2010 survey data). Iowa State producer tests measured a 7% overlap in spring tillage, and put the saving from removing it at about $1 per acre at 2012 costs.

Best for: row and broadacre farms, and long days in the cab. Check first: what accuracy your job needs, since planting and strip work ask for more than spreading. Slope can matter, though USDA found little difference by slope overall. The exception was soybean guidance, on 45% of nearly flat fields and 26% of steep ones (2018).

2. Precision planting implements

Modern planters control seed spacing and depth, and automatic row shut-offs stop seed dropping on ground already planted. Iowa State tests found an average 3.3% overlap during planting, on two Iowa farms in 2011 (more than 2,500 acres of field work). With a 12% yield loss in double-planted areas, $113.80 per acre of seed, 175 bu/acre and $6 corn, the authors valued section control at $7.91 per acre. Those are 2012 prices, so rerun the sum with yours.

Best for: irregular fields, point rows and many headlands. Check first: whether a retrofit fits your planter, and how much overlap you have now. A square field with few point rows has less to gain.

3. Smart irrigation systems

Smart irrigation links soil, weather or crop data to pumps and valves. Variable rate irrigation goes further and changes depth along a center pivot. The evidence is more mixed than sales claims suggest. In a Nebraska pivot study, VRI matched uniform irrigation on maize in 2017 (351 mm vs 344 mm prescribed). On soybean in 2018 it prescribed less water (265 mm vs 282 mm). Grain yield did not change in either year. An equipment industry study by the Association of Equipment Manufacturers (2021 study, reported in 2024) estimated a 4% cut in water use across precision technologies. That source is a trade body, so treat it as an estimate.

Best for: fields with mixed soils, costly pumping or limited water rights. Check first: your local water rules, and whether you will act on the data. A sensor changes nothing if the schedule stays the same.

4. Drones for crop monitoring and spraying

Drones carry cameras for mapping and, on larger models, tanks for spraying. USDA grouped drones, aircraft and satellites together and found use on 7.0% of corn acres (2016), 9.8% of soybean acres (2018) and 2.8% of cotton acres (2019). Images show where a crop looks different. Someone still has to walk the spot to find the cause.

Spraying carries more duties than mapping. In the US, FAA rules under 14 CFR Part 137 govern dispensing from aircraft, including drones. Ohio State’s spray drone fact sheet FABE-540 says coverage and drift depend on design and setup, and that applicators must not exceed the label rate per acre. Outside the US, ask your aviation and pesticide regulators. Always follow the product label and local rules.

Best for: quick scouting, wet ground and spots a ground rig cannot reach. Check first: whether hiring a licensed operator costs less than owning a drone for the acres you would treat.

5. Electric and autonomous farm machinery

Both are real products, but neither replaces a large diesel tractor on every job. The Fendt e100 V Vario is a small electric tractor with a 100 kWh battery and about 5 hours of working time, according to the maker. The maker pitches it for special crops, greenhouses, farms with their own power and municipal work, which is a different job from a long day of heavy tillage.

John Deere announced retrofit autonomy kits for model year 2022 and newer 9R and 9RX tractors, some newer 8R and 8RX tractors and select tillage tools, with limited supply in 2025 and a full launch set for 2026 (AgWeb, reporting from CES 2025). The economics are less settled. In a Purdue Commercial AgCast (February 2026), researchers said their modeled large corn and soybean farms were not yet in the economic ballpark for autonomy when labor is available. Labor-short farms and expanding farms may be the first exceptions. A model is not a forecast, so test it with your own labor cost.

Best for: farms that cannot hire enough operators. Check first: hours of use, oversight time, charging and dealer support.

▶ How precision technology, AI and satellites are changing the way food is grown. · 13:27

6. Precision sprayers

These range from boom section control to camera systems that spray only the weeds they detect. USDA found automated section control on 41% of US cotton acres, 45% of sorghum acres and 48% of barley acres in 2019. Iowa State’s 2024 field demonstration tested John Deere’s See and Spray Ultimate, a commercial spot-spray system, on five soybean fields, 415 acres in all. Product savings averaged 76%, or about $15.70 per acre, and ranged from 43.9% to 90.6% according to weed pressure.

Chart

Herbicide saved by spot spraying, field by field

Percent saved in a post-emergence pass, five Iowa soybean fields, 415 acres, 2024

John Deere reported savings of nearly 60% in annual herbicide costs for See and Spray users in 2024. That is a maker’s figure. One Illinois farmer in the same report moved from a two-pass to a three-pass program to get the full benefit, and he still reported saving $31,000 across 5,500 acres after fuel and labor. Savings per pass do not tell the whole story.

Best for: fields where good pre-emergence control leaves scattered weeds. Check first: your weed pressure and tank-mix planning. Heavy pressure cuts the savings. Follow the label for every product, including any spot-spray directions.

7. IoT sensors and farm management software

Connected probes and weather stations send readings to a phone or computer, and software turns them into records and alerts. The way this is set up differs from farm to farm, as our look at IoT systems on farms shows. The University of Arizona’s soil moisture sensor guide (AZ2082) advises comparing range, accuracy and resolution on the datasheet, along with the network and web services the sensor needs.

Best for: irrigated farms and managers with scattered sites. Check first: field signal coverage, battery and calibration needs, and whether you can export your data if you change supplier. A probe reads one spot, so place it in a representative part of the field.

8. Robotic farm assistants

Robots use cameras and machine learning to find crops and weeds, and some remove weeds without herbicide, for example with lasers. A 2025 review of smart agriculture in Asia in a peer-reviewed journal describes laser weeding robots and automated harvesters as part of a wider move from manual work to data-led systems. Much of the work it cites is research, so ask makers for field results. High-labor crops are a logical place to look first, though we found no cost figures that confirm it.

Best for: high-value crops with high hand-weeding or picking costs. Check first: field speed, crop range, service cover and whether you can lease or hire before you buy.

9. Yield monitors and smart harvesting equipment

A yield monitor measures grain flow and moisture as the combine moves, and GPS turns those readings into a map. USDA reports monitors on 61.6% of corn acres in 2016 and 80.5% of winter wheat acres in 2017, and notes they are now standard on new equipment. Yield maps were less common, at 43.7% of corn acres in 2016. So some acres with monitors were not mapped. Our guide to smart harvesting technology covers other harvest-time tools.

Best for: grain farms that want to test seed, fertilizer or drainage choices. Check first: calibrate for each crop as the maker directs, and clean the data before you trust the map. USDA reports an estimated 1.8% gain in net returns on corn farms from soil and yield mapping (2010 data).

10. Variable rate technology (VRT)

VRT changes the rate of seed, fertilizer, lime or pesticide across a field, using a zone map or live sensor readings. USDA found it on 37.4% of corn acres (2016), 25.3% of soybean acres (2018) and 22.7% of cotton acres (2019). The estimated profit effect was small and positive: net returns about 1.1% higher on corn farms, using 2010 survey data. USDA’s joint-use data also show that farmers often combine it with other tools: maps, VRT and guidance together covered 23% of corn acres (2016).

Best for: fields with lasting differences in soil and yield, plus records to prove them. Check first: whether you have several years of yield data or a good soil map, and whether your applicator can follow a prescription file. For fertilizer rates, get advice from a qualified agronomist and follow local nutrient rules.

Will precision agriculture equipment pay on your acres?

Overlap savings depend on your acres, your current overlap and the cost of what you put down. The calculator uses these to compare yearly savings with yearly ownership cost. It leaves out yield gains, labor and driver fatigue, so add those separately if you can measure them.

Try the numbers for your own farm below.

How to choose precision farming machinery

1. Name the problem. Write down the cost you want to reduce, such as overlap, herbicide, water or labor.
2. Measure the baseline. Use as-applied records, invoices or a simple test strip before you buy.
3. Start with what you own. Check whether your tractor, display or planter is ready for a retrofit.
4. Check compatibility. Ask whether the kit works with your other brands, and whether prescription and yield files can move between them.
5. Price the full cost. Include correction signal fees, software, training, installation and later updates.
6. Ask about service. A University of Illinois analysis found technician numbers and pay vary widely by state, and concluded that a shortage is real at around current wage rates. The same analysis notes that long repair waits at planting or harvest can mean significant losses.
7. Run a side-by-side trial. Compare treated and untreated strips for at least one season before rolling out.

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

Satellite monitoring as a lower-hardware option

Not every precision tool sits on a machine. Satellite vegetation maps show which parts of a field are changing, without any equipment in the field. They help you decide where to scout and can feed zone maps. They show a change in plant cover, and not its cause, so field checks still matter. Farmonaut Satellite + AI Farm Monitoring System is one such service, on web, Android and iOS. It works alongside the equipment above and does not replace it.

▶ How satellite NDVI maps can show crop stress across a large farm. · 4:09

How we chose and checked these tools

We kept 10 common categories that farms can purchase or hire. The choice is our judgement, not a survey. We then checked each against USDA reports, university extension work and peer-reviewed papers. We name maker and trade-body figures as such. We did not rank brands, and no maker paid for a place. Older figures carry their year, and prices are the costs used in each study and not current quotes.

FAQ

What is precision farming equipment?

It is machinery and devices that measure variation in a field and respond to it. Examples include GPS-guided tractors, section-control planters, yield monitors, sensors, drones and variable rate applicators.

What are the best smart farming tools to buy first?

USDA data show guidance is among the most widely used tools, so many buyers will look at it early. Pick your first tool by your largest measured waste, though. A farm with high herbicide bills may gain more from section control or spot spraying.

How do smart irrigation systems save water?

They use soil, weather or crop data to time and place water. Savings vary by site. A Nebraska study saw lower prescribed water with variable rate irrigation in 2018 but no difference in 2017, and no change in yield.

How do GPS-guided tractors help?

They reduce skips and overlaps and ease operator workload. USDA notes the potential for lower fuel, seed, nutrient and pesticide costs from fewer overlaps.

Is precision agriculture only for large farms?

No, but use is much higher on them. In 2016, 73% of the largest corn farm group used guidance, against 10% of the smallest. Small farms can spread the cost by hiring services, buying used kits or starting with satellite maps.

How do drones help crop monitoring?

They give fast, detailed images of crop differences, which helps you decide where to scout. Spraying by drone brings aviation and pesticide rules, so check both before you start.

Related pages on our site: large-farm management tools, fleet tracking, product traceability, carbon footprint tracking, crop loan and insurance checks, pest infestation tips, AI-powered farming, agriculture market research, weather API documents, satellite data API and web and mobile apps.