Duncan EcoSeeder - Calibration with Disconnected Agitator Shaft; Small Seeds; Sowing Peas

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Small Seeds

Calibration with Disconnected Agitator Shaft

The small seed metering wheel used in Duncan Drills is

especially well suited for sowing small seeds such as rape,

turnips and clover.

Due to the intensive action caused by the agitator the seeds

can adhere to each other, or be damaged, causing irregular

sowing/germination. Therefore it is recommended that

when sowing small seeds, especially oil seeds and thin

shelled seeds, the drive to the agitator is disconnected.

To do this remove the linch pin or bolt. (1).

Deviations between the calibrated and actual seed rate can

occur when residual dressing agent sticks to the bottom

flaps and thus slows the flow of seed. Before beginning the

actual calibration test fill the calibration trays by turning the

crank handle at a high speed around the 90 setting on the

gearbox scale. This will cause an immediate buildup of the

dresssing agent on the flaps. Return the contents of the

calibration trays to the seed box and proceed with the actual

calibration. Due to the residue buildup on the flaps your

calibration will now reflect accurately the required seed rate.

Note - Remember to reconnect the agitator shaft as required

for other seeds otherwise the consistency of seed rate will be

affected.

Sowing Peas

Peas having the size and shape as illustrated in A (e.g.

White Field Peas), can be sown in all Duncan Drills with this

type of metering wheel.

The flap should be set to a gap of at least “3” on the flap

setting lever (Page 18).

With these peas it should not be necessary to run the

agitator shaft.

Peas having the size and shape as illustrated in B (e.g.

Green or Garden Peas), tend to bridge inside the seedbox

and do not flow freely.

This multi-faceted pea requires agitation for sowing.

Agitator shaft disconnected

Agitator shaft connected