AN East Cornwall campaign group has attacked the National Trust over plans to flood an area of the Tamar Valley to create a 50-acre wetland nature reserve. Save Our Dyke in the Tamar (SODITT) was formed by East Cornwall residents opposed to the National Trust?s plan to flood farmland at Haymarsh. The scheme has twice been refused planning permission by Caradon District Council, once in 2002 and more recently last February. The trust is now appealing against the most recent decision ? SODITT members have now written to criticise its decision to persist with the scheme. In a letter, SODITT claims the trust and its supporters are ?blinkered? by ?bureacratic targets? and said there were other ways of enhancing biodiversity, rather than the ?wait and see what nature brings scenario of the National Trust wetland scheme?. SODITT also questions how much money and manpower the National Trust had put into the planning applications and subsequent appeal. But a trust spokesman dismissed the claims. He said a ?huge? amount of research was done prior to the first planning application, and further work was completed to address issues which arose out of its refusal. He said the evidence backing up the application had been reviewed by some of the most eminent hydrologists in the country and the scheme had been recommended for approval by Caradon?s planning officers ? which was why the trust was surprised it was turned down a second time.