fullscreen

eFinder

eFinder

Home › Article

Drones match farm planning effectiveness of more expensive tech, study finds

Phys · · 699 words · By Jeff Mulhollem
headphones Listen to the eFinder podcast briefing
Generate a natural audio summary of this story
Daily briefing

What to know about Drones match farm planning effectiveness of more expensive tech, study finds

Researchers from Penn State have developed a drone-based photogrammetry system to map hydrologically sensitive areas on farms. The study indicates that this method is a cost-effective and accessible alternative to LiDAR, providing nearly identical accuracy in identifying phosphorus runoff risks.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center75%
Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Drones match farm planning effectiveness of more expensive tech, study finds Sadie Harley Scientific Editor Andrew Zinin Lead Editor Environmental scientists and water resource managers need precise, high-resolution maps to reveal areas that farmers should…

Why it matters

Making those maps has depended on an expensive, sometimes unavailable technology, but a team led by Penn State researchers has developed a cheaper approach that can be just as effective.

Common ground

The researchers' novel system, detailed in a paper available online ahead of publication in Computers and Electronics in Agriculture, uses drones and photogrammetry, a technology that develops reliable 3D spatial information by analyzing overlapping 2D…

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from Penn State have developed a drone-based photogrammetry system to map hydrologically sensitive areas on farms. The study indicates that this method is a cost-effective and accessible alternative to LiDAR, providing nearly identical accuracy in identifying phosphorus runoff risks.

open_in_new Read the original article: https://phys.org/news/2026-05-drones-farm-effectiveness-expensive-tech.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 6
help Insufficient Evidence 3
verified Verified By Reference 1
verified
Claim 1: “LiDAR, which stands for light detection and ranging... is a remote-sensing technology deployed from aircraft or satellites that uses laser pulses to measure distances to Earth”
VERIFIED BY REFERENCE
The definition and function of LiDAR as a remote-sensing technology using laser pulses from aircraft or satellites to measure distance is confirmed by Wikipedia and multiple technical sources.
travel_explore
web search NEUTRAL — Lidar is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver. Lidar may operate in a fixed directi…
https://en.wikipedia.org/wiki/Lidar
travel_explore
web search NEUTRAL — LiDAR stands for Light Detection and Ranging. It is a remote sensing technique that measures distances and creates precise three-dimensional maps of the environment using laser light.
https://www.lidarsolutions.com.au/what-is-lidar/
travel_explore
web search NEUTRAL — LiDAR (Light Detection and Ranging) is a remote sensing technology that uses laser pulses to measure distances and map the land's surfaces, as well as above-ground features (such as vegetation and inf…
https://aerometrex.com.au/resources/blog/what-else-is-being-…
info
Claim 2: “approximately 80% of phosphorus losses originate from 20% of the watershed area”
SINGLE SOURCE
The web results provided for this claim only contain dictionary definitions of the word 'approximately' and do not provide any scientific data regarding phosphorus losses in watersheds.
travel_explore
web search NEUTRAL — The meaning of APPROXIMATELY is in an approximate manner —used to indicate that a stated number, amount, or value is an approximation. How to use approximately in a sentence.
https://www.merriam-webster.com/dictionary/approximately
travel_explore
web search NEUTRAL — APPROXIMATELY definition: 1. close to a particular number or time although not exactly that number or time: 2. close to a…. Learn more.
https://dictionary.cambridge.org/dictionary/english/approxim…
travel_explore
web search NEUTRAL — Approximately is close to a particular time, measurement, or number — but it's not exact. If you plan to meet a friend at approximately 2:00, it will be okay if you are a bit early or late.
https://www.vocabulary.com/dictionary/approximately
help
Claim 3: “In the mapping of hydrologically sensitive areas and phosphorus critical source areas, maps from drones and LiDAR were nearly identical, with differences of less than 1.53%.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to confirm the 1.53% difference between drone and LiDAR maps for phosphorus critical source areas.
info
Claim 4: “The researchers' novel system, detailed in a paper available online ahead of publication in Computers and Electronics in Agriculture, uses drones and photogrammetry”
SINGLE SOURCE
The evidence from the Penn State source mentions the drone method and photogrammetry as a viable alternative to LiDAR, but the specific mention of the paper in 'Computers and Electronics in Agriculture' is only present in the primary source provided.
travel_explore
web search NEUTRAL — Regional hydrological systems analysis using satellite remote sensing data...
https://www.tandfonline.com/loi/tres20
travel_explore
web search NEUTRAL — "The drone method gives almost the same answers as LiDAR, meaning that drones plus structure from motion photogrammetry are a viable, cheaper alternative to LiDAR," Drohan said. "Our approach can be u…
https://phys.org/news/2026-05-drones-farm-effectiveness-expe…
travel_explore
web search NEUTRAL — In agriculture, drones can be used for tasks such as crop monitoring, soil analysis and irrigation management. They can help detect water stress in crops, identify diseases and pets, estimate yield an…
https://www.researchgate.net/publication/355125734_Drone_-Ap…
info
Claim 5: “The team studied four farm sites in eastern Pennsylvania and created elevation models from drone imagery and compared them to existing LiDAR data from 2017.”
SINGLE SOURCE
The specific detail about studying four farm sites in eastern Pennsylvania and comparing them to 2017 LiDAR data is found only in the Penn State source.
travel_explore
web search NEUTRAL — The team studied four farm sites in eastern Pennsylvania and created elevation models from drone imagery and compared them to existing LiDAR data from 2017.
https://www.psu.edu/news/research/story/drones-match-farm-pl…
travel_explore
web search NEUTRAL — UBC Research Data. Using a LiDAR-derived Digital Elevation Model to Identify Hydrological Vulnerabilities Rizvi, Asiya. Description.The LiDAR-derived digital elevation model is used to identify stocha…
https://open.library.ubc.ca/collections/researchdata/items/1…
travel_explore
web search NEUTRAL — Want to elevate your chances of finding digital elevation model (DEM) data?It’s also possible to simplify your DEM data search by using Equator. Find and download high-quality DEM and LiDAR data. It’s…
https://gisgeography.com/free-global-dem-data-sources/
info
Claim 6: “a team led by Penn State researchers has developed a cheaper approach that can be just as effective [as expensive mapping technology]”
SINGLE SOURCE
The claim is supported by a specific Penn State news report ('Drones match farm planning effectiveness of more expensive tech...'), but no other independent news organizations or academic sources were found to corroborate the specific finding of this study.
travel_explore
web search NEUTRAL — drone over farm field. Farmers and researchers can use drones and photogrammetry to map runoff and pollution-risk areas with great accuracy, making precision agriculture more accessible. Credit: Jhony…
https://www.psu.edu/news/research/story/drones-match-farm-pl…
travel_explore
web search NEUTRAL — While drone-based spraying systems offer several benefits, farmers have raised concerns about the technology’s ability to maintain optimal water volumes and spray coverage. Additionally, there are que…
https://www.thopter.com/blog/penn-state-researchers-develop-…
travel_explore
web search NEUTRAL — Less than $135, the researchers wrote. A tool for precision agriculture. Now that the researchers have demonstrated their lab-on-a-drone for nitrate testing, they say other applications are possible.
https://wherethefoodcomesfrom.com/iowa-state-researchers-dev…
help
Claim 7: “The research was conducted within the U.S. Department of Agriculture's experimental watershed in Northumberland County, a sub-catchment of the Mahantango Creek Watershed that ultimately drains to the Chesapeake Bay.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to confirm the location of the research in Northumberland County or the Mahantango Creek Watershed.
info
Claim 8: “They checked accuracy using 400 to 1,000 ground control points per site.”
SINGLE SOURCE
The specific use of 400 to 1,000 ground control points per site for this particular study is only mentioned in the Penn State source.
travel_explore
web search NEUTRAL — They checked accuracy using 400 to 1,000 ground control points per site. Then the researchers used both datasets to map hydrologically sensitive areas and phosphorus critical source areas.
https://phys.org/news/2026-05-drones-farm-effectiveness-expe…
travel_explore
web search NEUTRAL — Adding more ground control points takes time but means more accurate drone maps. Or does it? The Nevada DOT conducted a trial to find out.
https://www.pix4d.com/blog/GCP-accuracy-drone-maps
travel_explore
web search NEUTRAL — When it comes to drone surveying , effective ground control point placement is everything. GCPs help define the boundaries of your site and properly scale everything in between. They are a true buildi…
https://enterprise-insights.dji.com/blog/ground-control-poin…
help
Claim 9: “We employed a technique called 'Structure from Motion' photogrammetry—stitching photographs together that are taken from many different angles and slightly different positioning to create a three-dimensional surface of a landscape.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results to confirm the specific description of 'Structure from Motion' photogrammetry as used in this context.
info
Claim 10: “In elevation accuracy, the correlation was 0.999”
SINGLE SOURCE
The search results for this claim provide general definitions of 'correlation' but do not provide the specific result (0.999) for the study in question.
travel_explore
web search NEUTRAL — The population correlation coefficient between two random variables and with expected values and and standard deviations and is defined as: where is the expected value operator, means covariance, and …
https://en.m.wikipedia.org/wiki/Correlation
travel_explore
web search NEUTRAL — Jul 31, 2023 · Correlation means association - more precisely, it measures the extent to which two variables are related. There are three possible results of a correlational study: a positive correlat…
https://www.simplypsychology.org/correlation.html
travel_explore
web search NEUTRAL — Jul 23, 2025 · The degree of correlation between two or more variables can be determined using correlation. However, it does not consider the cause-and-effect relationship between variables.
https://www.geeksforgeeks.org/data-science/correlation-meani…
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.