Perfection for precision fertilisation: TS spreading system

An actuator turns the delivery vane by approx. 10 °, so that the fertiliser is guided via the shorter border spreading vane in border and water course spreading. The combination of speed and using the shorter vane means that the fertiliser is thrown a considerably shorter distance without stressing it mechanically.

1. AutoTS – position for normal spreading
2. AutoTS –position of the delivery vane during boundary spreading

The ProfisPro intelligent weighing system combines the benefits of the weighing system with the FlowControl torque measuring system

ProfisPro 
The spread rate regulation between the Profis weighing system and the FlowControl sensors is a unique selling feature for AMAZONE.

ProfisPro for Tronic and Hydro 
The intelligent ProfisPro weighing system is available for both the Tronic version with mechanical drive, and the Hydro version with hydraulic drive.

Rate calibration completely thought through: ProfisPro

The correlation between application rates and the torque generated at the spreading disc at different working widths has been determined for all types of fertiliser on the basis of numerous spreading tests. Put simply: low application rates generate less torque on the disc than higher rates.

FlowControl reliably monitors the torque on each spreading disc drive independently and can immediately adjust the position of the application rate shutters in the event of a deviation from the target rate.

In addition, the driver has an overview of the actual quantity remaining in the hopper at all times as well as the possibility to display the remaining travelling distance until empty.

Optimised spread rate from the very first second

This combination of weighing system and FlowControl enables the fertiliser spreader to use torque in order to regulate its theoretical application rate over the complete spreading process. The Profis weighing system monitors the actual spread rate every 25 kg. This allows FlowControl to recalibrate itself at regular intervals. This takes place without any need to stop. The ProfisPro intelligent weighing system means that the spread rate is optimised from the very first second of the spreading process.

The benefits

Absolute precision from the very first second 

• Simultaneous regulation via the weighing system and torque measurement 
• Calibration and regulation of application rate in all field situations (border spreading/SectionControl)

Exact application rate in any field situation 

• Regulation of the shutter slides, even when using application maps, independent of which side 

Reliable application down to the last kilogram 

• Detection of empty runs and blockages 
• Absolute weight recognition using the weighing system

1. Working width
2. Throwing distance (2x working width)
3. Active HeadlandControl
4. Border spreading
5. HeadlandControl provides an increase in the working width towards the inside of the field on the headland

The problem: Over- and under-fertilisation on the headland

Fertiliser spreaders have a high throwing distance behind the machine. In practice, the switch-off points are usually only achieved when the tractor is turning on the headland. The arc of spread behind the tractor and round to the side creates areas that are either over- or under-fertilised.

Switch-off time on the headland: Without HeadlandControl

• Spreader switches off too late and is already turning 
• Tractor would have to drive beyond the headland tramline

Result: Over- and under-fertilised zones are created

1. Over-fertilisation (dark-green)
2. Under-fertilisation (white)
3. Standard headland
4. Inner throwing distance without HeadlandControl

The solution: HeadlandControl

When HeadlandControl is activated, the throwing width and spread rate are increased on the field side, so that the switch-off point is moved towards the inside of the field. Furthermore, the new part-width section control, which is now adapted to the shape of the spread fan, causes the part-width sections to be switched off from the outside to the inside when entering the headland. Over- and under-fertilised zones on the headland are subsequently avoided.

With HeadlandControl

• HeadlandControl means that the spreader continues to apply fertiliser to the crop when it is on the headland 
• The tractor can follow the wheel tracks of the sprayer

Result: Uniform crops across the headland

1. Improved lateral distribution at the headland
2. Switch-off point moved
3. Extended headland
4. Inner throwing distance with HeadlandControl

AMAZONE WindControl is now available independently of ArgusTwin.

Optimum lateral distribution

The wind is always blowing somewhere in the world and this represents a major challenge in maintaining an even fertiliser spread pattern. The influence of wind on the spread pattern can be constantly monitored and automatically compensated for with the AMAZONE WindControl system (according to Prof. Dr. Karl Wild of the University of Applied Sciences, Dresden). Practical trials have shown that the system reacts actively to wind influences for approximately 80% of the spreading time and provides optimisation of the spread pattern.

Mounted on the machine, a high frequency measuring wind sensor, registers both the wind speed and also the wind direction. According to this data, the job computer then calculates new settings for the delivery system and the spreading disc speed. In a cross wind, the disc speed is increased on the side into the wind and the delivery system is rotated outwards. At the same time, the speed of the downwind side is reduced and the delivery system rotated inwards.

With the aid of WindControl, larger time windows are created for spreading even where there is an influence of wind. Apart from all the important fertiliser spreader parameters, the user additionally always has, in view, the real-time direction of the wind, the force of wind and if the wind is gusting. In addition, in heavy winds, when the system is no longer able to compensate for, or when the wind gusts are too frequent, WindControl sends an automatic alarm to the driver.

AMAZONE WindControl ensures an optimum lateral distribution even in crosswinds.

The benefits 

• Higher output through longer windows of use 
• Increased yield through optimised lateral distribution 
• Operational safety via the automatic warning system

The ArgusTwin system always ensures optimum lateral distribution of the fertiliser via permanent online monitoring and correction of the delivery system. This leads to a more effective fertiliser use and forms the basis for optimum crop management.

The spread fan acquisition in the Argus system is based on measuring the lateral distribution by means of radar technology which is insensitive to dust and dirt and delivers reliable results under practical conditions. ArgusTwin monitors both the left- and right-hand spread fan and corrects the electric delivery system if necessary.

Automatic delivery system adjustment

Via the ISOBUS terminal, the application rate, and any further relevant data relating to the fertiliser to be spread, are entered from the setting chart. For the Argus system, the spreading chart has been updated to include the throwing angle that gives the optimum lateral distribution. Utilising this value, ArgusTwin constantly checks whether the predetermined direction of throw for that fertiliser is in fact being maintained by the spreading discs. When the actual throwing width deviates from the “desired” throwing width due to inconsistencies within the fertiliser, worn spreading vanes, working across slopes or during starting and stopping procedures, the spreader readjusts, on its own, the setting for the delivery system – and that of each side individually. The only pre-condition for its use is the electric delivery system adjustment.

The benefits

• Constant on-line monitoring of both spread fans 
• Maintains an optimum lateral distribution of the fertiliser even with: 
  • variable fertiliser quality 
  • environmental influences, such as moisture and dew  
  • fertiliser coating on the spreading discs 
• Automatic slope compensation of the spread pattern 
• Positioned protected directly above the spreading discs

1. The problems in practice – poor lateral distribution, for instance, due to a change in fertiliser properties
2. Automatic adjustment of the delivery system via ArgusTwin
3. Perfect lateral distribution enables uniform crops, even with varying fertiliser quality and properties

Support for needs-based fertilisation
When applying fertiliser, drivers have to juggle various tasks. Firstly, they need to ensure optimal lateral distribution of the material to be spread, as well as maintaining the desired application rate of the fertiliser. Secondly, they must ensure that the most appropriate border spreading mode is used alongside ditches, footpaths or field boundaries, to guarantee legally compliant and precise fertilisation. This can lead to operator errors, especially when changing drivers, as the right border spreading procedure is not activated or deactivated in the right place. Lack of driver knowledge can also lead to non-compliance when applying fertilisers.

Automation of complex switching processes and reduced driver workload
In the following application, the driver only needs to activate the previously plotted scenario and the fertiliser spreader will automatically perform the saved switching processes. GPS ScenarioControl enables the precise, resource-efficient use of fertiliser, as the various spreading procedures are performed in exactly the right places. This ensures that any subsequent applications by other drivers are legally compliant. In addition, drivers can use the pre-plotted, optimised field route as a guide.

Recording and storing the right driving strategy
When crossing the field for the first time with the fertiliser spreader, all the switching points, driving route and driving direction can be automatically plotted by an experienced driver via GPS ScenarioControl by pushing the record button. The switching points are clearly marked on the map and the driving direction is visualised with arrows. GPS ScenarioControl is integrated in the AmaTron 4 ISOBUS operator terminal and can be viewed and operated via the AmaTron Twin display extension.

The advantages at a glance:

• Always the same switching processes with different fertiliser applications 
  – Prevention of operator errors 
  – Legally compliant and resource-efficient fertiliser application guaranteed  
  – Correct application in poor visibility, e.g. darkness or fog 
• No flattening of crops because routes in the field are always optimised
  – Supports inexperienced drivers

GPS ScenarioControl can be used in conjunction with the AmaTron 4 ISOBUS operator terminal and the AmaTron Twin App.