Chitting potatoes must be done properly, according to John Sarup of the SAC.
Chitting is the controlled production of sprouts on seed potatoes before planting. But the controlled production of sprouts is the key. The length & strength of the sprout must be controlled to give a short (1.5-2.5cm (0.5-1in) long), stubby, green chit.
The 3 factors involved in chitting are:
- temperature – 4 degrees Celsius is ideal, but the temperature should not go above 10 degrees, neither should it reach freezing.
- ventilation - plenty of fresh air
- light - plenty of light – but not bright sunlight – a north facing window is best
Early and late main crop potatoes could especially benefit from the chitting , but it must be done properly.
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