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5.2 Setting and adjusting the spread rate
Purpose
The setting for the spread rate, which is spread by the seed drill during the seeding
process, has a significant effect on the seeding results.
Requirements
The following requirement must be fulfilled for this work step:
• None
Procedure
This is how to set and adjust the spread rate:
Step Description
1 Perform a calibration test to determine the current spread rate, see Per-
forming a calibration test On page 30 for more information.
2 If necessary, take measures to adjust the spread rate.
Suitable measures are:
•
Selection of the seeding shaft, see Selecting the right seeding shaft
On page 31 for more information.
•
Selection of the brush pressure, see Setting the brush pressure On
page 35 for more information.
•
Adjustment of the working width, see Installing dispersion plates on
the soil tillage implement On page 21 for more information.
•
Adjusting the tractor speed.
Calculating the spread rate
The spread rate can be calculated using the following formula:
SpR: spread rate in kg/min
m(wgt): desired spread rate in kg/ha
v(tractor): speed of the tractor in km/h
w(working): working width in m
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