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

Tractor to help budding farmers

Jeff Farm is a 2433ha property near Gore, owned and run by the Salvation Army since the early 1950s after it was gifted by farmer Edmund Jeff, with the stipulation it be "used to train young people with a passion for agriculture, who would not otherwise have such a career option" - for a career in the New Zealand agricultural industry.

A year of global challenges

As a guest of the Italian Trade Association, Rural News Group Machinery Editor Mark Daniel took the opportunity to make an early November dash to Bologna to the 46th EIMA exhibition.

BA Pumps expand

Cambridge based BA Pumps & Sprayers, specialists in New Zealand-made spraying equipment, has acquired Tokoroa Engineering’s product range, including the iconic Milk Bar mobile calf feeder products, alongside calf and feed trailers.

Entries open for innovation award

Fieldays and its renowned Innovation Awards are celebrating their 57th year, marking a longstanding tradition in the agricultural calendar, with the latter delivering a platform for problem-solvers to showcase their innovation to the primary industries.

Mounting kit helps with accurate metering, spreading

StocksAg has introduced a mounting kit to fit its Turbo Jet 8 or 10 units to pneumatic trailed SKY EasyDrills, allowing separate metering and accurate application of products like Avadex through an additional set of outlets behind the drill’s press wheel.

Featured

Massey Research Field Day attracts huge interest

More than 200 people turned out on Thursday, November 21 to see what progress has been made on one of NZ's biggest and most comprehensive agriculture research programmes on regenerative agriculture.

Expo set to wow again

Stellar speakers, top-notch trade sites, innovation, technology and connections are all on offer at the 2025 East Coast Farming Expo being once again hosted in Wairoa in February.

A year of global challenges

As a guest of the Italian Trade Association, Rural News Group Machinery Editor Mark Daniel took the opportunity to make an early November dash to Bologna to the 46th EIMA exhibition.

Boost for hort exports

The horticulture sector is a big winner from recent free trade deals sealed with the Gulf states, says Associate Agriculture Minister Nicola Grigg.

National

OSPRI's costly software upgrade

Animal disease management agency OSPRI has announced sweeping governance changes as it seeks to recover from the expensive failure of…

Machinery & Products

BA Pumps expand

Cambridge based BA Pumps & Sprayers, specialists in New Zealand-made spraying equipment, has acquired Tokoroa Engineering’s product range, including the…

Entries open for innovation award

Fieldays and its renowned Innovation Awards are celebrating their 57th year, marking a longstanding tradition in the agricultural calendar, with…

» Latest Print Issues Online

Milking It

Chinese strategy

OPINION: Fonterra may have sold its dairy farms in China but the appetite for collaboration with the country remains strong.

Not fair

OPINION: The Listener's latest piece on winter grazing among Southland dairy farmers leaves much to be desired.

» Connect with Dairy News

» eNewsletter

Subscribe to our weekly newsletter