Standen ZENO 21, Manual

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Planting
Careful planting is one of the pre-requisites for a good crop of high quality potatoes.
The potatoes should be planted in straight ridges without gaps and at a correct and
even depth. This is achieved when, at the beginning of planting, the functions of the
planter and the different adjustments are carefully studied.
The seed potatoes used can vary a great deal (i.e. different varieties, shape, size,
number of sprouts, skin quality etc.) and the planter must be adjusted accordingly.
See ‘Calibrating the Control System’.
Depth Control
The seed planting depth is determined by the height of the openers (item 1, fig 3)
relative to the land wheels (item 1, fig 4). The depth control can be either manual or
hydraulic.
On machines with manual depth control, the depth is set by the top links (item 2, fig
4). Shortening the top links will lower the openers relative to the wheels thus
increasing the planting depth. Always adjust both wheels equally.
On machines with hydraulic depth control the top link is replaced by a hydraulic ram
actuated via the control console.
An automatic depth control sensor can also be fitted to ensure planting depth is
maintained irrespective of the contours of the bed.
1.9 OPERATION
Fig 4 Fig 3