Tracing and testing work carried out on a farm in Wales, where an outbreak of ring rot was detected, has shown that the disease was contained and no other farms were infected with the disease, said a DEFRA spokesman.
In total, more than 165,000 potato tubers were tested, and apart from two stocks, all tests were negative.
Ben Bradshaw, plant health minister, said: “It is extremely good news that this outbreak has been contained.
“This is thanks to good co-operation with those in the industry and the substantial government resources committed to the containment exercise.”
A Lessons Learned review is now scheduled to be held to assess the handling of the outbreak and review the controls that the UK has in place against ring rot.