Seed Potatoes from Scotland

By Iain Barbour

Average grocer's potatoes and garden grown seed potatoes carry more spores of bacteria and fungal pest infestations than high grade Scottish Basic seed potatoes. Additionally, non-certified seed potatoes can carry PCN eelworm or may perhaps be treatable with sprout suppressant that may prevent your harvest from growing properly. Mild mosaic disease happens when the aphid-transmitted Potato Virus A infects crops together with Potato Virus X

Seed potatoes found within the Eu are classified in 3 classifications:




Certified category seed potatoes will not be produced in Scotland to lessen the danger of disease in Pre-Basic and Basic plants.

Basic Seed are developed from tubers that are from specialist, officially accredited Pre-basic producers before being used to provide the high grade Basic seed or reduced grade Certified seed which is offered to household and export markets, including lower class CC seed developed in England and Wales.

This means that Pre-basic Scottish seed potatoes are free from defects and diseases for example leaf roll, severe mosaic, total virus, mild mosaic, and also blackleg. In comparison, CC class seed potatoes may have anywhere between 2-5% of crops affected by the very same diseases.

Growing crops are supervised all through the growing season and so are formally inspected at least 2 times for virus diseases, blackleg in addition to varietal purity.

Crops are assessed for aphids and, if an aphid limit is exceeded,are subject to post-harvest tuber testing.

All consignments of tubers are formally checked for rots, blemishes and flaws.

Only seed stocks that meet rigorous standards following crop and tuber inspections are classified as Scottish Pre-basic or Basic seed potatoes.

Seed potatoes are grouped into three different maturities:

- First Early
- Second Early
- Maincrop

Maturity refers to when the final potato crops are ready to be harvested - all kinds are planted at the same time, and grow according to their maturity.

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