Machinery makers flocked to Ingliston, Edinburgh, last week to put their latest creations under the noses of some 200,000 Royal Highland Show visitors. Here we pick out some highlights.

Huge Stewart Tetrad quad-axle silage trailer can carry 35t

Agricultural trailers don’t come much bigger than Stewart’s Tetrad, which can swallow 70cu m of silage and carry a 35t payload.

It’s the largest model the Aberdeenshire maker has built to date by some margin – 24t was its previous flagship – and it clearly isn’t designed with UK roads in mind.

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Instead, it’s been conceived to satisfy the needs of large operations in Australia where there’s considerably more room and less red tape.

Four BPW 10-stud axles are charged with carrying the prodigious load and the front and rears benefit from passive steering.

The pictured example is rolling on 560/60 R22.5 tyres with a 169D load rating, but it’s possible to fit wider 600/55 R26.5s.

There’s been no scrimping on metal, with chunky 300x200x12.5mm box section used in the ladder chassis, along with extra reinforcing at high load points.

That being said, the body has a fairly typical construction, with 3mm mild steel used for the sides and 5mm for the floor. It all adds up though, with unladen weight running to 12t.

Obviously, it requires the services of a large tractor, which should ideally weigh 18t or more in order to not get pushed around, says Stewart.

It’ll want some serious oil flow too, as the huge single tipping ram needs 90 litres to reach full extension.

Starting price is £70,000.

Slurryquip Infinity pumping rig gets high-end remote control

For those keen to streamline their umbilical operation, Slurryquip has built a neat remote-controlled pumping unit.

The Infinity is powered by a four-cylinder Stage 5 Cat engine that develops 188hp and it has a custom-built control system that’s designed to never lose signal.

This has been achieved by fitting a triumvirate of communication methods – radio, GSM and satellite – each of which can step in if another is struggling.

Hydraulic valves allow the operator to start and stop the flow of slurry, direct it back to store, or fire a sponge to clean the pipework.

A Krohne flow meter can also be added, and by fitting a second one on the spreading tractor, the system can automatically detect leaks and shut down the system.

The example shown here is fitted with a Bauer SX200 pump, but buyers can opt for a Veneroni one if they prefer.

In addition to the skid-unit version on show, there will be the option a trailer mounted setup. Prices start at £65,000.

Lower cost 9m Skai spot sprayer targets smaller farms

SoilEssentials has introduced a narrower and simpler version of its Skai grassland spot sprayer that’s a little easier on the pocket.

The 9m, which is based on a Team Sigma, joins the firm’s existing line-up of 12m, 15m and 24m machines.

While these larger models have appealed to contractors, the hope is that the newcomer will make the technology more accessible to individual farming businesses.

Like the rest of its siblings, the 9m uses cameras and artificial intelligence to identify weeds before triggering the nearest nozzle to give them a blast of chemical.

Initially, the Skai system concentrated on docks. But the firm says it’s now getting good results with thistles and is on the cusp of mastering nettles, rushes and ragwort.

Prices start at about £48,000, plus an annual subscription to cover software updates and new weed profiles as they’re developed.

Einbock Multi-box mini seeder can apply seed and fertiliser

The latest small seed applicator from Einbock features a 600-litre plastic hopper and a stainless-steel metering unit.

This combination means the Multi-box can now be used for applying fertiliser as well as seeding grassland and cover crops.

Designers have also made it easier to switch between different harrows and cultivators, by fitting quick release pipe manifolds.

Versions with 8, 12, 16 and 24 pipe outlets are available, making the seeder suitable for machines up to 12m wide.

It’s also possible to shut off individual outlets for quick alterations in seeding width.

A regular electric fan comes as standard, but there’s the option of upgrading to a gutsier “e-power” setup, or a hydraulic unit.

Buyers can spec their means of speed control too, from an old-school metering wheel and seven-pin connector to a GPS module.

Prices range from £5,500 to £9,000.

Redrock upgrades half-pipe dump trailers with drop-down door

It should be easier to tip bulky loads from Redrock’s half-pipe dump trailers following the County Armagh firm’s decision to fit hydraulic drop-down rear doors.

These replace the old up-and-over setup that could catch large objects such as tree stumps and prevent them sliding out.

The rest of the design is unaltered, meaning they still run on twin 10-stud commercial axles and have a sprung drawbar with bolt-on hitch.

Other features of note include twin tipping rams, hydraulic brakes, leaf-spring suspension and LED lights.

This 20t model has been upgraded to 560/60 R22.5 tyres, air/hydraulic load sensing brakes and 6mm Hardox steel floor and sides. It comes in at £28,000.

Over-wheel tracks reduce ground pressure of Can-Am’s Traxter 6×6

To give Can-Am’s 6×6 Traxter better float on boggy terrain, Scottish dealer ATV Services has begun selling chunky over-wheel tracks.

These are built by Alaska Bush Tracks and clamp over the wheels to significantly increase surface area.

They also yield a marked improvement in grip thanks to the series of deep plastic lugs bolted around their circumference.

As the tracks have to be imported in small batches, they don’t come cheap – a full front-and rear set costs £6,995.

Similar kits are available for other all-terrain vehicles, such as the Outlander 6×6, Polaris Big Boss 6×6 and Ranger 6×6, as well as the Argo eight-wheeler.

Another new feature on the Traxter pictured here is a custom rear steel canopy from Gearmate.

This is fitted with a tailgate and twin gull-wing side doors that give easy access to the entire load bed. All of these lift on gas struts and have rubber seals to keep the rain out.

Complementary accessories are on the way, such as sliding draw units for guns and other paraphernalia. The canopy alone costs £5,000.

Overum ploughs going strong with return to Swedish ownership

The fortunes of Swedish plough maker Overum were turned around late last year when new home-grown owners rescued it from administration.

This brought some pleasing stability to the business, which had been in the hands of a private equity outfit since CNH Industrial offloaded it in 2024.

It’s now trading as Overum Agro and production is getting back to full speed.

This means buyers have access to the brand’s entire range of trademark blue ploughs, as well as red ones from sister brand Agrolux.

Seen here is the popular VF CX P with full vari-width and XL D bodies that can turn furrows up to 20in wide. Prices start at £27,000.

Bomford Sabre bat-wing toppers get wider and tougher

An overhaul of Bomford Turner’s bat-wing topper line-up promises to improve durability and make it easier to add extra mulching blades.

These Sabre models replace the old Tri-Wing and come with a beefier rear wheel setup featuring simple rubber suspension.

Decks have been redesigned too, with mulching bands fitted from the factory and smoother tops that have fewer places for debris to collect.

Redesigned rotor hubs have been introduced, which make it easy to switch from the standard three-blade setup to running six slashers.

Working width has also increased, with the five-rotor 620 able to mow down 6.2m in a single pass. On farm price is about £26,000.

This is joined by a three-rotor 460 that has a 4.6m working width and costs about £20,000.