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

Two new Irish machines set for Fieldays debut

Released in Europe in 2024 and having just arrived in time for National Fieldays, Giltrap Agrizone will be exhibiting two new machines from Irish manufacturer Malone Farm Machinery.

Handy cordless shearing keeps on top of dirty jobs

Designed and assembled by David Short, a farmer and former shearer, Handypiece is a cordless shearing handpiece for portable shearing and tail trimming, powered by a long-life, rechargeable lithium battery.

Featured

Editorial: Time for common sense

OPINION: The case of four Canterbury high country stations facing costly and complex consent hearing processes highlights the dilemma facing the farming sector as the country transitions into a replacement for the Resource Management Act (RMA).

National

DairyNZ Farmers Forum underway

Over 300 farmers and rural professionals have gathered in Hamilton for the first DairyNZ Farmers Forum for this year.

Machinery & Products

Shearing legend hooked on CanAm

Sir David Fagan, world-renowned competitive sheep shearer with 642 shearing titles worldwide and a knighthood to his name, now runs…

50 years of tractor pull

This year, the Fieldays Tractor Pull, in association with PTS Logistics, mark a major milestone – 50 years of crowd-thrilling…

The Wrangler's birthday bash

It's the Wrangler Limited’s 30th birthday and to celebrate the milestone a prototype of the E Series Wrangler - a…

» Latest Print Issues Online

Milking It

Free speech

OPINION: The Free Speech Union is taking this one too far.

Drug survey

OPINION: New national data from The Drug Detection Agency (TDDA), a leading workplace drug tester, shows methamphetamine (meth) use is…

» Connect with Dairy News

» eNewsletter

Subscribe to our weekly newsletter