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: 438

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

Map: Prairie Dryness, Drought Little Changed in May

Abnormal dryness and drought across Western Canada were little changed in May compared to a month earlier. The latest monthly update of the Canadian drought monitor shows 19% of Prairie agricultural lands were being impacted by abnormally dry or drought conditions as of the end of May. That is 2 points higher than the end of April but slightly below 21% at the end of March and sharply below 47% in February. Much of the Prairie Region received below to well below normal precipitation in May, with the Peace Region, south-central Saskatchewan, and southern Manitoba recording less than 25% of normal. On the last day of the month, however, a large storm system in Alberta produced 40 to 80 mm of precipitation alone. In east-central Alberta up to 300% of normal monthly precipitation fell in the one day. Significant rainfall was also recorded in western regions of Saskatchewan but at lower levels than in eastern Alberta, the monitor said. Temperatures were generally below normal across

U.S. Soybean Ending Stocks Steady

U.S. soybean ending stocks – both old and new-crop - were left unchanged in USDA’s June supply-demand update on Thursday. For 2026-27, USDA made no changes to the U.S. soybean balance sheet this month. Estimated production remained at 4.435 billion bu, up 173 million from 2025-26, while the crush was held at 2.75 billion bu and exports at 1.63 billion. With no changes, forecasted 2026-27 U.S. soybean ending stocks were left steady from May at 310 million, modestly below the average trade guess of 314 million bu. The USDA also kept the 2026-27 season-average farm price unchanged at $11.40/bu, up from the 2025-26 estimate of $10.40. For old-crop 2025-26 soybeans, the USDA raised crush by 20 million bu, citing stronger soybean meal exports and domestic meal use, while soybean oil use for biofuel was also increased. However, exports were lowered by 20 million bushels based on available U.S. Census data, offsetting the increase in crush and leaving ending stocks unchanged at 340 mi

Only Modest Adjustments for Old-, New-Crop U.S. Corn

The USDA left its 2026-27 U.S. corn outlook virtually unchanged this month, with the only supply-side change a 3 million-bu increase tied to a higher import forecast carried in from the old-crop balance sheet. In its June supply-demand update on Thursday, USDA left 2026-27 U.S. corn production unchanged at 15.995 billion bu, while all major demand categories were also steady. Feed and residual use was held at 6.1 billion bu, food, seed and industrial use at 6.955 billion, including 5.6 billion for ethanol, and exports at 3.15 billion. With no change in use, the small increase in 2026-27 beginning supplies carried directly into ending stocks, which were raised 3 million bu from May to 1.96 billion, slightly above the average pre-report trade guess of 1.942 billion. The season-average farm price was unchanged at $4.40/bu. Corn futures were trading about 7-8 cents/bu lower this afternoon, following the report’s noon hour EST release. For old-crop 2025-26, USDA also made only mo

Don’t miss June 12 deadline: Share your feedback on the Beef Cattle Code of Practice

Public comment period nearing close on proposed updates to national beef cattle care standards.The Beef Code outlines expected and recommended animal care practices for beef cattle. The public comment period is an opportunity for anyone who has an interest in how beef cattle are raised in Canada, including consumers, veterinarians, food service professionals, and producers, to review the draft content and share feedback. Feedback gathered through the public comment period is critical and helps determine the content of the final document. Strong producer feedback from all regions of Canada is an important step in this process. The Beef Code is meant to drive continuous improvement in animal welfare and is built to be scientifically informed, practical, and reflect societal expectations for responsible farm animal care. The Code uses an outcome-based approach that focuses on achieving successful standards while allowing for flexibility in how these outcomes are met rather than dictati

From the Government Desk: ABP keeping up momentum

Spring is always one of the best times of year in this business. Calving is underway, seed is going into the ground, and there’s a sense of momentum heading into the grazing season. This year, that momentum also includes a few policy wins worth noting. Strychnine is back in 2026! After its approval was pulled in 2023, producers have been searching for a useful option to control infestations of Richardson’s ground squirrel. If you’re impacted, you’ll know why this is a meaningful development. The rollout is still underway, with initial access expected toward the end of May. For some, that timing will miss the most effective spring window, which is frustrating. There is expected to be another opportunity later in the summer, but it won’t fully replace what many producers were hoping for this spring. That said, getting this approval across the line was no small task. This was very much an Alberta-led effort, with strong collaboration between cropping groups and ABP to build the case. A

© 2026   Created by Darren Marsland.   Powered by

Badges  |  Report an Issue  |  Terms of Service