Ontario Agriculture

The network for agriculture in Ontario, Canada

GPS Corrections and Their General Uses

After many years of precision agricultural use, many questions still exist of what is the correct correction for each operation.  I have listed the corrections available and a brief description of their uses.

Wide Area Augmentation Signal (WAAS) –

Accuracy: < 6-8”

Initialization/Convergence: Standard*

This free service provides performance suitable for agriculture applications in which accuracy and repeatability are not of the highest concern. It's most popular for broadacre crop spraying and tillage applications.

Omnistar XP-

Accuracy: 3-5" (8-12 cm)

Initialization/Convergence: Standard*

An OmniSTAR® service for high-performance broadacre spraying and land-tillage applications in which the vehicle will be operating in areas with open views of the sky at all times. OmniSTAR XP requires a convergence period at startup.  Omnistar XP is most popular for boom shutoff systems on sprayers and tillage applications.

Omnistar HP-

Accuracy: 2-4" (5-10 cm)

Initialization/Convergence: Standard*

An OmniSTAR® service suitable for high-performance broadacre seeding, spraying, and harvesting applications in which the vehicle will be operating in areas with open views of the sky at all times. OmniSTAR HP requires a convergence period at startup.  Omnistar HP is popular for broadacre planting, spraying and harvest solutions.

Trimble’s RTX-

Accuracy: 1.5" (3.8 cm)

Initialization/Convergence: Standard*

The new Trimble® CenterPoint™ RTX™ Correction Service delivers GNSS enabled, repeatable 1.5" (3.8 cm) corrections via satellite or cellular network directly to your receiver anywhere in the world. CenterPoint RTX works with the built-in GNSS receiver in your existing Trimble FmX® integrated display, CFX-750™ display, or AG-372 GNSS receiver.  Trimble’s RTX is becoming increasingly popular with cash crop planting using row controls, side dressing, no-till operations, small veggie crops where size does not dictate RTK investments.

RTK Base or Cellular-

Accuracy: < 1" (2.5 cm)

Initialization/Convergence: < 1 minute

CenterPoint RTK is well suited for row-crop planting, strip tilling, land leveling and other water management applications in which the best horizontal and vertical accuracy is required.  Repeatable accuracy is available anywhere, with cellular/base station systems.  Advancements in base station technologies now allow for no line of sight restrictions, and distances up to 20 Miles.

Agricultural GPS systems are no longer about straight lines, it is about intregration into your operation, your future plans and increasing profitability.  Data acquisition, yield mapping and variable rate application are all becoming main stream to today’s farmers.  Without properly installation, calibrated and training you will not be able to maximize your investment.  Ensure you make the right choices, your yields will thank you.

-------------------------------------------------------------------------------------

Paul Smith is the owner of Northern Equipment Solutions and based in Central Ontario, Canada. Providing Quality Potato Equipment, Precision Agriculture and Other Advanced Equipment, Northern Equipment Solutions ensures that your profits and yields are maximized. www.northernequipment.ca or sales@northernequipment.ca

Views: 424

Comment

You need to be a member of Ontario Agriculture to add comments!

Join Ontario Agriculture

Comment by Iain Robson on January 2, 2013 at 11:55pm

Awesome, thanks very much Paul.

I will look into it. For a small initial investment, it could improve yields, which would be huge.

Also, the new website looks great.

Comment by Paul Smith on January 2, 2013 at 5:52pm

Generally WAAS is a good starting point for any precision purchase, it can cover some of your less accurate requirements on the farm including some planting, sprayering, manure application and fertilizer spreading all areas where accuracy will have very positive returns in quality and reduced costs of inputs

Comment by Iain Robson on January 2, 2013 at 2:40am

Great post Paul. 

Which one would you suggest for a starter gps?

Agriculture Headlines from Farms.com Canada East News - click on title for full story

Trade with China

China’s Anti-Discrimination Investigation On March 8, 2025, China’s Ministry of Commerce (MOFCOM) announced the outcome of its anti-discrimination investigation initiated in September 2024 as a result of the federal government’s imposition of tariffs on Chinese electric vehicles, steel and aluminum. In response to Canada, China’s State Council Tariff Commission will impose a 100 per cent tariff rate on Canadian canola oil and canola meal along with several other tariffs on other Canadian agricultural commodities as of March 20, 2025. Tariffs from the State Council Tariff Commission resulting from the anti-discrimination investigation are separate and distinct from China’s anti-dumping investigation into imports of Canadian canola seed which is ongoing. China’s Anti-Dumping Investigation On August 12, 2025, China’s Ministry of Commerce (MOFCOM) announced its preliminary ruling as part of its anti-dumping investigation into Canadian canola seed imports. In its ruling, MOFCOM announce

Advocating for Trade and Market Diversification on The Hill

Canadian canola farmers are navigating major trade volatility. Ongoing tariffs have closed access to China, once a $4.9 billion market, while uncertainty around the upcoming Canada-U.S.-Mexico Agreement (CUSMA) review is putting Canada’s two largest export markets under pressure. At the same time, Canada’s growing biofuels sector offers a valuable opportunity for canola farmers. With strong policy support, biofuels can drive new domestic demand for canola and reduce farmers’ exposure to trade disruptions. Canada’s canola farmers rely on predictable market access. These shifts show how quickly geopolitical issues and national policies can ripple back to the farm gate.  As the national representative of Canada’s 40,000 canola farmers, Canadian Canola Growers Association (CCGA) has been front and centre with the federal government, calling for a political solution to the China tariff dispute and for a canola-friendly biofuels policy.  Canola’s Annual Lobby Day Every year, the Board o

Revitalizing rural and agricultural infrastructure

Since 2023, Alberta’s government has taken action to support ag societies through the Agricultural Societies Infrastructure Revitalization Program, strengthening the quality of life in rural communities. The program has delivered $7.5 million in total grants for 106 ag society projects over the past three years, including funds allocated this year. This funding has helped ag societies with improvements and repairs to commercial kitchens, roofs, horse riding arenas and heating and ventilation in ice rinks, and has increased accessibility and energy efficiency in rural facilities. Alberta’s rural communities need up-to-date facilities to promote community involvement and economic growth. These buildings are central hubs, offering residents the opportunity to gather, engage and connect with their neighbours. “Ag societies have an important role in the quality of life for Alberta villages, towns and rural communities. Throughout the year they welcome Albertans to community events, from l

Canada makes commitments to international ag

Canada will spend almost $400 million to support farmers around the world

Growth Promoters and the Environment Revisited

In October 2021, this column described a research project that examined how long residues from growth promoters persist in the feedlot environment. They learned that residues from trenbolone acetate (TBA; used in some growth implants to mimic testosterone) and melengestrol acetate (MGA; sometimes fed to heifers to suppress estrus) dissipate very quickly after they’re excreted. However, residues from ractopamine (a feed additive that improves feed efficiency, weight gain and leanness late in the feeding period) could be found on the pen floor for up to five months after it was last fed. Jon Challis and collaborators at Agriculture and Agri-Food Canada and the University of Saskatchewan recently published a follow-up study to learn whether manure composting, stockpiling or soil incorporation help break down ractopamine residues and whether ractopamine residues can affect hormone levels in other organisms that may come in contact with them in the environment (“Chemical and bioassay-based

© 2025   Created by Darren Marsland.   Powered by

Badges  |  Report an Issue  |  Terms of Service