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01.03.2017
ST600-900S
3. Positioning of the wheel The coulter arm
wheel can be set to four (4) positions.
For normal drilling depth (
~
1 - 5 cm) no
adjustment needs to be made. If you are
sowing peas or beans, or deeper sowing is
required, the results may be better if all of
the coulter arm wheels are changed. Refer
to the image next to this.
Deep sowing 5-9 cm
Shallow sowing 0-2 cm
Normal sowing 1-5 cm
Normal sowing 3-7 cm
Sowing seed
The following should be considered when setting the
drilling depth:
• Soil type?
• Quality of seedbed?
There are three settings that together affect the drilling depth:
1. Clips. The clips is the first and most important setting.
2. Coulter pressure. Do not use more coulter pressure than the conditions in the soil
require. Usually 50 bar is sufficient to ensure good seed sowing. In dry and difficult
conditions and/or for deep seed sowing it may be appropriate to increase the coulter
pressure.
Attachment 1.
• The sowing table below is only a recommendation! Something to START with!
• The seed sowing MUST be studied and decided in the field! Ascertain the seed amount and measure the
sowing depth!
• Too high a fan speed will result in uneven depth of sowing.
• Too low a fan speed will increase the risk of the seed blocking the seed hoses.
• It is also important to check to ensure that the correct seed amount is being put out in the field (therefore
that the calibration was correct). Advice If the actual sown amount in the field is, for example, 10 % too
high, increase the pulses per kg by 10 %.
• If the machine is equipped with BDA, you may need to increase the fan RPM slightly.
Fan
speed
(RPM)
Seed
drill
ST
600S ST
800S ST
900S
Small seed sowing
2800
2900
3000
Grain
3300
3400
3500
7. Rotors
Grain rotor
Adapted to all normal feed rates of grains
such as cereals and peas, (possibly fertiliz-
ers).
approx 80-100 kg/ha and
upwards
Grass seed rotor
Adapted to various types of grass
seed blends.
approx 10-60 kg/
ha
Rapeseed rotor
Adapted for low feed rates of
small seed products.
approx 2-12 kg/ha
Special rotors
For low feed rates of large seed sowing (hybrids of rye,
maize, catch-crop mixtures that contain large seeds).
up to approx 80-100 kg/ha
• Moisture?
• Plant residues that could cause resist-
ance?
For rapeseed feed amount below approx. 2 kg/ha.
Note the positioning of the flat ring, with the flat
side opposite the other rings!