Combine harvester put through its paces in Oz

The Armstrong family from Central Queensland farm 8,500ha of mostly dryland cropping, predominantly growing a rotation of wheat in winter and sorghum in summer at Coolibah Plains south of Comet. Long-time John Deere customers, they operate a fleet that includes three S770 combine harvesters.

During their harvest of 5,200ha of wheat in October, they had the chance to trial the all-new S7 combine harvester alongside their current line-up.

Featuring an updated cab design, new engines, a re-designed grain loss sensing system, and new residue management features, the new S7 offers a suite of automation features, aimed at taking operator performance to the next level.

Ground Speed Automation manages the combine’s speed based on operator inputs for grain loss, engine load and rotor pressure to maintain consistent throughput. Harvest Settings Automation automatically adjusts rotor speed, fan speed, and concave, chaffer, and sieve clearances based upon acceptable limits for grain loss, foreign material, and broken grain.

This is said to deliver a more consistent and higher quality harvest, irrespective of operator skill level.

Meanwhile, the predictive ground speed automation uses ground speed automation as the foundation, with the addition of two forward-looking cameras, to visually assess changing crop conditions and a pre-harvest satellite image to generate a predictive field map. The combine merges the two inputs to proactively manage ground speed and maximise combine throughput.

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Xander Armstrong commented, “The technology pack on the new S7 is impressive; with the technology optimised for our conditions, we saw a 15 to 20% increase in productivity in the S7 compared to our current machines. If you can sustainably achieve a conservative extra 15% productivity, over a harvest that takes four weeks, you can easily reduce that time by four or five days. This may not seem like much, but every farmer knows if you’re harvesting and suddenly there’s rain or storms coming, those extra couple of days make a big difference.”

Typically, averaging yields of across the whole area of 3.5t/ha, Xander commented on the re-designed grain loss monitoring system, commenting, “that technology makes a big difference, not only in ensuring more grain ends up in the bin for you, but also in the months following harvest. If we can improve our grain loss percentages, once you start getting rain, there’s less pressure to get back into the paddock soon after harvest to control weeds and volunteer plants that are emerging”.

He also noted how well the new high-efficiency residue management system distributed material across the stubble, which will also help with post-harvest management.

Xander summed up by commenting, “We’re very happy with the fleet we currently have, but we try to trade in our machines for new every five or six years, so when it comes time to trade our current fleet in, we’ll certainly be confident in taking home the new S7 with the automation technology”.