Spreading in wedges and section control
Precise application of fertilizer in wedges
Bredal's fertilizer spreaders F4 and F8/F10 are designed with two floor belts with separately controlled application rates, enabling the volume to be adapted continuously when spreading in a field wedge. As the tractor drives forward into the wedge, the volume is gradually reduced on the side towards the wedge to ensure the correct application rate.
The same procedure is used for driving in an uncovered field section. The application rate facing the leftover section is reduced so the correct volume is spread at all times, neither too little or too much.
Automatic adjustment of spreading pattern
The picture below shows how the spreading pattern gradually changes while driving forward into a wedge in the field and the volume is reduced. (highlighted in green)
The spreading pattern principle for different leftover widths between the headland and wheel tracks in the field is shown at the bottom of the page. As the leftover width lessens, the application rate is reduced on the side in question so the total volume spread in the field always corresponds to the value entered.
ISOBUS section control is used to adjust the quantity being spread. The section control program is installed in most ISOBUS terminals and is required to enable the spreader to adjust the quantity while spreading in wedges and leftover widths. One of the benefits of using the software installed in the terminal is that it can be used not only for the fertilizer spreader, but also for the sprayer, planter, etc., which is the basic concept of the ISOBUS system.
Customize settings to fit each individual type of fertiliser
Every year, Bredal conducts many spreading tests using the different types of fertiliser available on the market. The settings for the different types of fertiliser can be downloaded from our website to make it possible to always use the optimized setting for each individual type of fertiliser.
We verify and optimize the settings on an ongoing basis and we give high priority to continuously furthering the development and improvement of headland spreading, etc., where it is possible to use different downchute settings on the right and left sides. A new feature is the automatic reduction of the application rate on the headland side when the headland gear is activated, notably to optimize the spreading pattern for headland spreading.
36-meter working width in the field shown together with headland spreading.
An ordinary spreading pattern without any uncovered sections.
36-meter working width, with a leftover width of 27 meters.
The center of the spread pattern (highlighted in green) is shifted about 3 meters to the right of the wheel tracks and the application volume is reduced.
36-meter working width, with a leftover width of 18 meters.
The center of the spread pattern (highlighted in green) is shifted about 10 meters to the right of the wheel tracks and the application volume is reduced further.
36-meter working width, with a leftover width of 9 meters.
The center of the spread pattern (highlighted in green) is shifted about 12 meters to the right of the wheel tracks and the application volume is reduced substantially.