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When lightbar guidance systems came on the market a few years back, agricultural retailers and custom applicators quickly saw their potential to improve both application quality and the quantity of work that could be accomplished in a day. Now the industry is in the beginning stages of adopting the next step in the evolution of guidance — automated steering systems.
Less than 10% of fertilizer and crop protection products are currently applied using automated steering systems. But with prices for basic automated steering systems falling to what lightbars cost just a few years ago, steering system manufacturers are confident that a big change is in the works. They say that growing numbers of new custom application rigs are being outfitted with automated steering and that low-cost kits will make upgrading existing rigs attractive as well.
“Custom applicators are definitely adapting quickly to using GPS guidance in their operations for the simple fact that they get paid by acres covered,” says Jason Lenhardt, product marketing manager for AGCO's automated steering products. “By eliminating overlap and underlap, and increasing travel speed, the custom applicator gets more work done in a day.”
Although lightbars deliver much of that promise, automated steering takes productivity to a new level by further reducing operator fatigue and improving precision.
“Most people who are buying automated steering systems have experience with lightbar guidance, so they know what to expect,” says Richard Gould of TeeJet Technologies. “Automated steering is no longer science fiction, high-tech stuff. Automated steering has become mainstream — a known commodity.”
Steering trends
Until a couple years back, automated steering systems were oddities with $50,000-plus price tags. Some competitors credit Trimble with shaking up the market when it introduced its EZ Steer steering-wheel-drive assisted steering system in late 2004. “That's when the gloves came off,” says one competitor.
Currently priced at about $5,500 for a complete system that provides 6- to 8-in. pass-to-pass accuracy, it set a new low-price mark for this entry-level segment.
Since then, numerous aftermarket steering system providers, including AutoFarm, Hemisphere GPS, Raven and TeeJet, have joined the ranks of manufacturers offering one or more steering systems for less than $10,000. In many cases, both hydraulic and steering-wheel-driven options are available.
“Custom applicators seem to prefer the hydraulic-drive systems,” notes Marlin Melander of Raven Industries. “They like the idea of a fully integrated system built into the machine.”
Mid-range systems offering real-time kinematic (RTK) corrections are now available for $15,000 to $16,500. And prices for high-end RTK systems have dropped to the $18,000 to $23,000 range, plus another $10,000 to $12,000 for an RTK base station if a local subscription RTK network isn't available.
To date, low-cost basic systems have been most attractive to custom applicators, says Nathan Weinkauf of Case IH. “The reason for this is they are normally just making one pass across the field, and plus or minus 10-in. accuracy is more than adequate.”
Scott Shearer, an agricultural engineer at the University of Kentucky, agrees that this degree of steering accuracy is adequate for applying fertilizer and herbicides.
New for 2007
TeeJet and Raven are offering new entry-level automated steering models for 2007. And AutoFarm is adding a mid-priced RTK system.
The new FieldPilot 220 from TeeJet Technologies is a hydraulic steering system that offers 8- to 12-in. accuracy for $5,500. The system uses the Wide Area Augmentation System (WAAS) GPS receiver in TeeJet's Centerline 220 lightbar (included in the price) to provide directional input to the steerer. A system with this accuracy is ideal for applying fertilizer and preplant and solid-seeded crop spraying, Gould says.
Raven Industries' new QuickTrax system uses a mechanical steering-wheel device from AutoFarm, but pairs it with a Raven controller, lightbar and GPS receiver. Depending on the components, it provides 6- to 8-in. or 4- to 6-in. pass-to-pass accuracy for $7,400 or $15,780. The system complements Raven's SmarTrax hydraulic automated steering system, which sells for $500 more, Melander notes.
The AutoFarm RighTrac system offers 3-in. pass-to-pass repeatable accuracy in a system that uses its OnTrac wheel steering unit and an RTK base station for $16,500. For an additional $1,000, you can replace the OnTrac unit with a hydraulic steering package.
On the next two pages is a list of the automated steering systems available from major manufacturers.
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