Kverneland a-drill, Operating Manual

Page: 79 / 115

Seed drill adjustment
79
Working width /
sowing table
The sowing quantity depends on the speed of the distribution rotor. It
can be adjusted manually with the box 3.2 or automatically depending
on the working speed with the box 5.2 and a speed sensor.
To define the quantity of seeds to sow, carry out a fixed position test
before starting work.
The sowing tables indicate the quantity sown for different seeds in
kilogrammes per minute (quantity returned during a fixed position flow
test).
The table values can be used as close values. Numerous factors,
such as the specific weight, weight of a thousand seeds, seed
humidity, modification to fluidity, etc... can lead to differences with
these values.
The fixed position flow tests allow these differences to be corrected.
To determine the required seed flow rate:

Use the following formula :
Example:
Required spread quantity [kg/ha] x Travel speed [km/h] x Working width (m)
600
= Weight [kg/min]
5[kg/ha] x 12[km/h] x 12[m]
600
= 1.2 [kg/min]