EU regulations to ban a substance that is used in this country to control bracken could threaten future grouse shooting seasons.
Asulam was banned by the EU's European Standing Committee on the Food Chain and Animal Health following safety concerns over aerial spraying by spinach growers in continental countries.
But the Moorland association say banning the only effective bracken control herbicide will change the face of Britain's countryside. They say the move will devastate wildlife and destroy land management worth around £100million a year.
They say that the heather rich grouse moors will be destroyed and completely over taken by bracken.
As heather is the only thing grouse eat, grouse could disappear from our moorlands.
The Brussels' legislation means this is the last summer land in Cumbria can be sprayed with Asulam, leaving tracts of precious countryside vulnerable to massive bracken infestation.
Robert Benson is the conservation manager for the Lowther and Lonsdale estates in Cumbria he says it's 'European bureaucracy gone mad." He added:
He say without the government-approved chemical, countryside and rural livelihoods would be put at serious risk.
Mr Benson added that last year may have been the last good season for unique wild red grouse.
Moorland Association vice chairman George Winn-Darley, who manages 6,500 acres of North Yorkshire heather moorland, explained three quarters of the world's heather moorland is found in the UK. He added:
The bulk of the country's moorland lies within key tourist areas and has Site of Special Scientific Interest status. Ironically, is protected under European law for plants and birds.
Bracken control on grouse moors has seen a 60 per cent reduction in the blood-feeding ticks responsible for life-threatening Lyme disease.
The Government department DEFRA lost a vote in the EU appeal committee in September to try and get the decision to ban Asulam over turned. The ban will come into force in December this year, they are now trying to get emergency approval to use Asulam for bracken control, in a statement they said: