Friday, 15 December 2023 12:55

Fert spreaders with curve control

Written by  Mark Daniel
Amazone fertiliser spreader Amazone fertiliser spreader

Amazone's CurveControl won a silver medal winner at Agritechnica 2023.

It adjusts the lateral distribution to the various cornering speeds and corrects the movement of the spread pattern in centrifugal fertiliser spreaders when driving around bends, resulting in more uniform crops and also helps prevent over-fertilisation inside the bend and fertiliser placement beyond the field boundary.

While curve compensation has already been implemented by Amazone in its crop sprayers, the geometry of the sprayer boom being located tight behind the physical pivot point of the machine means only the application rate within the boom needs adjustment to compensate for curves.

In the case of a fertiliser spreader, the typical throwing distance is up to twice the working width and the application area can be many metres behind the spreader, depending on the type of fertiliser, while the spread fan is kidney-shaped area. This demands a detailed knowledge of the way that the spreading unit works with various fertilisers, along with a corresponding complex implementation of a control algorithm.

Modern centrifugal fertiliser spreaders have the disadvantage that over- and under-fertilised areas inside of the working width occur when negotiating bends as a result of different speeds.

This effect is amplified by the combination of forward speed and swivelling of the spread pattern caused by the steering angle. This means that significant over-fertilisation arises in some areas because of these multiple overlaps, whereas gaps occur in other areas. In addition, the swivelling of the spread fan at the edge of the field causes fertiliser to be applied beyond the field boundary.

CurveControl prevents these effects, which are undesirable from an ecological and economic point of view, and thereby minimises the risk of nutrients leaching into the ground water. Furthermore, incorrect application beyond the field boundary when negotiating bends is prevented by the system.

In addition, CurveControl can further improve the environmentally friendly use of mineral fertiliser in combination with existing solutions such as ArgusTwin, WindControl and GPS part-width section control.

More like this

PM opens new Power Farming facility

Morrinsville based Power Farming Group has launched a flagship New Zealand facility in partnership with global construction manufacturer JCB Construction.

Made in NZ: TRS Tyre & Wheel Ltd

Made in New Zealand looks at the wealth of design and manufacturing ability we have in New Zealand, creating productive and cost-effective products for the agricultural sector. This week machinery editor Mark Daniel takes a closer look at TRS Tyre and Wheel Limited with managing director Nigel Sherborne…

Success for Argo tractors

The judges at last year’s Agritechnica event picked the Italian-built Landini Rex 4-120GT Robo- Shift Dynamic as the Best of Specialised category at its Tractor of the Year 2024 Awards.

New name, new ideas

KGM New Zealand, is part of the London headquartered Inchcape Group, who increased its NZ presence in August 2023 with the acquisition of SsangYong distribution and five retail outlets.


Frontline biosecurity 'untouchable'

Biosecurity Minister Andrew Hoggard has reiterated that 'frontline' biosecurity services within Ministry for Primary Industries (MPI) will not be cut under the Government's plan to reduce the public service.

Migrant farmer 'lets the side down'

An appalling case of migrant worker exploitation on a Southland farm isn't acceptable, says Federated Farmers dairy chair Richard McIntyre.

Milk price certainty

Westland Milk has reaffirmed its commitment to pay farmer suppliers 10c above Fonterra farm gate milk price for the following two seasons.


Share farmers with big plans

With only about eight weeks to go before their cows are dried off, the 2024 Manawatu Dairy Industry Awards Share…

Team effort brings results

For the team at Westmorland Estate Limited in Waikato, it has been another year of everyone working together to achieve…

Machinery & Products

New name, new ideas

KGM New Zealand, is part of the London headquartered Inchcape Group, who increased its NZ presence in August 2023 with…

All-terrain fert spreading mode

Effluent specialists the Samson Group have developed a new double unloading system to help optimise uphill and downhill organic fertiliser…

Can-Am showcases range

Based on industry data collected by the Motor Industry Association, Can-Am is the number one side-by-side manufacturer in New Zealand.

» Latest Print Issues Online

Milking It

Exploited by one of their own

OPINION: Milking It believes a recent Employment Relations Authority ruling on the exploitation of three migrant workers from Indonesia highlights…

'Not our fault!'

OPINION: Milking It wasn’t too surprised to hear Kiwis’ trust in media has sunk to a new low.

» Connect with Dairy News

» eNewsletter

Subscribe to our weekly newsletter