The Environmentally Sensitive Areas (South West Peak) Designation Order 1993

2.  As regards any enclosed permanent grassland which is the subject of an agreement—

(1) the farmer shall maintain the land and shall not excavate, plough, level, reseed;

(2) the farmer shall not use a chain harrow or roller except between 16th July in any year and the following 1st April;

(3) the farmer shall not increase existing application rates of organic or inorganic fertiliser;

(4) the farmer shall graze the aftermath of any grass cut for hay or silage;

(5) the farmer shall not graze so as to cause poaching, overgrazing or undergrazing;

(6) the farmer shall not use fungicides or insecticides;

(7) the farmer shall not apply herbicides except to control bracken, nettles, spear thistle, creeping or field thistle, curled dock, broadleaved dock or ragwort or to carry out stump treatment of cleared scrub. Except in the case of bracken, herbicides used for these purposes shall be applied by weed wiper or by spot treatment;

(8) the farmer shall not apply lime, slag or any other substance designed to reduce the acidity of the soil.