Adjusting the application rate for liquid fertiliser

The liquid fertiliser metering unit 1 is connected to the liquid fertiliser tank via the supply hose 3. The liquid fertiliser flows through the hose 2 to the application point and is applied there.

  • A = Rate in l/ha

  • AR = Pure fertiliser rate in kg/ha

  • G% = Fertiliser content in percent

  • ϱ = Density in kg/l

  1. Determine the application rate for the fertiliser using the equation.

  • D = Flow rate in l/min

  • A = Rate in kg/ha

  • v = Forward speed in km/h

  • RW = Row width in m

  1. Determine the flow rate with the equation.

Flow rate

Valve position

Pressure

1bar

1,5bar

2bar

2,5bar

3bar

3,5bar

4bar

4,5bar

5bar

5,5bar

6bar

6,5bar

7bar

7,5bar

8bar

1

0,43l/min

0,52l/min

0,6l/min

0,62l/min

0,68l/min

0,73l/min

0,77l/min

0,85l/min

0,93l/min

0,96l/min

0,99l/min

10,2l/min

1,06l/min

1,09l/min

1,12l/min

2

0,6l/min

0,71l/min

0,8l/min

0,89l/min

0,97l/min

1,04l/min

1,11l/min

1,2l/min

1,29l/min

1,32l/min

1,35l/min

1,39l/min

1,43l/min

1,48l/min

1,54l/min

3

0,97l/min

1,15l/min

1,32l/min

1,46l/min

1,59l/min

1,71l/min

1,83l/min

1,94l/min

2,05l/min

2,1l/min

2,16l/min

2,25l/min

2,35l/min

2,41l/min

2,48l/min

4

1,44l/min

1,72l/min

1,96l/min

2,19l/min

2,39l/min

2,58l/min

2,75l/min

2,91l/min

3,08l/min

3,18l/min

3,28l/min

3,4l/min

3,51l/min

3,65l/min

3,78l/min

5

2l/min

2,4l/min

2,76l/min

3,09l/min

3,37l/min

3,64l/min

3,88l/min

4,07l/min

4,26l/min

4,4l/min

4,54l/min

4,72l/min

4,86l/min

5,03l/min

5,21l/min

6

3,07l/min

3,47l/min

3,91l/min

4,31l/min

4,67l/min

5,01l/min

5,33l/min

5,52l/min

5,71l/min

5,92l/min

6,14l/min

6,33l/min

6,52l/min

6,8l/min

7,08l/min

7

4,06l/min

4,9l/min

5,49l/min

6,03l/min

6,54l/min

6,98l/min

7,42l/min

7,63l/min

7,85l/min

8,11l/min

8,36l/min

8,65l/min

8,94l/min

9,3l/min

9,66l/min

8

5,81l/min

6,63l/min

7,31l/min

8,03l/min

8,73l/min

9,35l/min

9,93l/min

10,18l/min

10,44l/min

10,77l/min

10,94l/min

11,48l/min

11,82l/min

12,26l/min

12,7l/min

  1. read the valve position from the table above.
  1. Move the valve 1 to the desired position.

  2. Because the flow rate depends on the applied material:

    Calibrate the application rate as specified in the operating manual for the liquid fertiliser tank.
NOTE

  • The determined values are reference values.

  • Check the setting each time the applied material is changed.

  • During application in the seed furrow, liquid fertiliser can drip out of the application point in the headland position.