What Is Precision Agriculture? Uses, Technology And Equipment

April 17, 2021

Technology advancements over the past few decades have led to strong growth in precision agriculture, which is enabling farmers to increase yields and productivity

Man with aerial drone in farm field

The precision agriculture (also known as precision farming and precision ag) industry has gained a lot of press and attention over the past decade. Technology advancements including global positioning systems (GPS) satellites, wifi, drones, computer vision, LIDAR, big data processing and artificial intelligence have all contributed to the advancement and increasing importance of precision ag.

Precision agriculture is a key component to increasing the world's food supply and reducing greenhouse gas emissions. The World Economic Forum estimates that if 15 to 25% of the globe's farms were to adopt precision agriculture techniques, then global crop yields could increase by 10 to 15% and greenhouse gas emissions and water would decrease by 10% and 20%, respectively.

What Is Precision Agriculture?

Precision agriculture can be best characterized as farming management based on observing, measuring and responding to field variability in crops. High level, it enables farmers to give special attention to smaller, more defined tracks of land by using and analyzing data gathered from equipment and sensors. It enables farmers and managers to do more with fewer resources — increasing productivity, yields and quality, while reducing labor costs, time and inputs such as fertilizers, fungicides, etc.

Precision agriculture helps farmers understand the underlying dynamics of their land, optimize crop yields and utilize inputs (water, fertilizers, herbicides, etc.) more efficiently. Farmers are able to visualize maps of the terrain and see areas that may require more or less attention or application. Precision ag software collects data from sensors and equipment (such as cameras, GPS, drones, LIDAR, IoT sensors, etc), then maps the field conditions. A large 1,000 acre field likely has many different patches or spots that require varying levels of treatment and attention. Tending to these areas required more guesswork and time before the advent of precision ag.

Tools used in precision agriculture today enable farmers to map their fields rapidly, save snapshots to see how their fields evolve over time, and weave their analytics data into their machinery such as tractors, combines, sprayers, applicators, etc. to tend to the fields and crops more efficiently.

Precision ag maps showing field conditions
Source: Wikipedia
Image above shows sample maps produced by precision agriculture to analyze vegetation density, water deficit and crop stress.

Machine Learning, Artificial Intelligence & Precision Farming

Machine Learning and Artificial Intelligence have become hot topics over the past few years. The rise of cloud computing and faster processors have enabled companies to process, analyze and report large quantities of data in seconds and minutes. Machine learning and artificial intelligence make sense of data by analyzing millions to billions of data points and finding meaningful relationships and drivers.

Precision agriculture is a natural fit for advanced analysis such as artificial intelligence. Data points collected in the field can include: water levels, soil conditions, crop health, temperature, humidity, crop color, crop height, signs of infection, pests, temperature, and more. Smart computer algorithms ingest these data and then make intelligent recommendations to optimize crop yield and applications.

Internet of Things (IoT) is another development that will fuel precision agriculture applications. IoT devices are plugged into the internet 24/7, and can report real-time data to your cloud database. IoT devices help farmers keep a live pulse on their crops and fields.

Equipment & Machinery Used For Precision Agriculture

Smartphones and tablets

Mobile devices are one of the most common items used in precision ag. Applications can map fields, track animals, update weather information and more. These applications tend to be very affordable.

Global Satellite Positioning System (GPS)

GPS is an essential part of precision farming — it enables precise recording of coordinates (latitude and longitude) to accurately map and pinpoint areas of interest. GPS is widely used on drones, sensors, tractors, and other farm machinery. GPS enables machinery to operate autonomously — for instance, a farmer can plugin GPS coordinates for a path that a drone or tractor can follow. The drone or tractor then can navigate the course by itself using GPS.

Precision agriculture uses GPS to map the location of the device or sensor as it collects data. It then aggregates all of these locations and data to create a visual geographic map.

Drones

Drones are unmanned aerial craft capable of flying and maneuvering at low altitude and low speed in order to capture data such as images, temperature, LIDAR, humidity, etc. Drones can be controlled by a remote control, or by a GPS system. Drones can quickly map and collect field data at a low cost.

Drones store data on a medium such as an SD card, or by transmitting it electronically back to a base station. Some companies offer professional drone mapping services to farmers.

Larger drones are now capable of performing tasks such as precision spraying, cutting/trimming, and picking. This technology is not yet widespread, but it will be more common in the future.

Remote Sensors

Using remote sensors helps in collecting different farm data without physically touching anything. Remote sensors have different uses on the farm and are another very important equipment for precision farming. With remote sensors, farmers can better identify crops and make good decisions.

Remote sensors can also detect animals, plants, soils, and notice other elements on the farm. They can be very helpful in identifying pests because they can sense different emissions from pest-infected crops in comparison to healthy crops. Some other things for which remote sensors can be used include monitoring weather conditions, estimating moisture in the land, mapping resources on the farm, and estimating crop yield.

Variable Rate Technology (VRT)

VRT helps adjust and apply precise and measured quantities of fertilizers, herbicides, seeds, water and other items in the field. It reduces waste and increases yields. VRT is usually used when applying fertilizers, weeding, sowing, or irrigating. GPS is required for VRT to properly work, in addition to specialized software. VRT is helpful in many ways — for example, when seeding, this technology ensures that seeds are sowed only then when it is needed.

Data Management System

Precision agriculture produces vast quantities of data in the form of numbers, images and text. Data management systems help store, process, organize and analyze these data sets. Typically when data are gathered from sensors they are in raw format — they need to be processed and analyzed to add value.

A good analogy of data processing is an apple and apple pie. When you collect the data it is like collecting apples. If you want a sweet, delicious dessert then you will need to process those apples to make apple pie. The act of processing the apples includes washing and cutting them, combining them with other ingredients such as crust and sugar, then baking. The same concept applies to your precision agriculture data.

Satellite Cameras

As private industry makes satellite launches more affordable, many services are now available to take pictures of farmland from outer space. One such company is Planet Labs. These high-res images can be taken at regular intervals (daily, weekly or monthly), and then analyzed.

Conclusion

Precision agriculture is valuable and here to stay. The industry will continue to grow and become more important to our farming techniques. New developments such as artificial intelligence and labor-capable drones will further integrate precision agriculture into farming best practices.

Resources

Best Uses For Drones In 2021

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