Potato beds

In temperate and cool areas, it’s time to prepare beds for potatoes, and good preparation can avoid many of the problems that may affect these vegetables. Choose a bed that is well drained and has not grown potatoes (or any of the tomato family) for at least four years to avoid the risk of several soil-borne diseases. Potatoes need a separate area for successful growth, as the plants require regular hilling for good cropping.
Potatoes need plenty of fertiliser, but don’t use fresh manures as the higher nitrogen content in these can reduce tuber production. Avoid adding lime or wood ash either, as potatoes prefer a slightly acid soil. Too much calcium in soil increases the incidence of a disease that produces “scabby” potatoes. A moderate amount of compost or well-rotted manure mixed through the topsoil is excellent. This can be supplemented with an application of poultry-based complete fertiliser or worm castings if compost or manures are in short supply. A drink of seaweed extract tea will help to satisfy potatoes’ high potassium requirement. Make sure the fertiliser is thoroughly mixed through the topsoil to avoid hollow heart occurring in tubers. After preparing the bed, cover it with several centimetres of mulch, and keep just damp until planting time.

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