Ayr has cancelled its two-day meeting later this month due to ongoing drainage work at the track.
The British Horseracing Authority announced on Tuesday that the fixtures scheduled for April 29 and 30 will not take place at Ayr because 'areas of the Flat track are not raceable'.
Ayr, which staged the Coral Scottish Grand National meeting last weekend, was also unable to hold its opening Flat card.
Explaining the situation, clerk of the course Graeme Anderson said: "As part of a programme of ongoing investment, we have been carrying out drainage work in the home straight for the long-term good of the track following issues in recent years.
"We have a relatively short window to complete major works - and unfortunately with unseasonably low temperatures in the past few weeks, it has meant the course has not recovered at the rate we would like.
"Naturally we are hugely disappointed that areas of our Flat track will not be raceable for our fixtures at the end of April.
"But human and equine welfare is paramount, and we will never seek to compromise safety in order to achieve a quick fix or outcome."