Article 4
The common agricultural policy of the European Community, except measures concerning feed containing medicinal products (including growth regulators) or medicinal products when destined for use in feed, provided that such exception shall not extend to zootechnical additives within the following functional groups:
(a)digestibility enhancers: substances which, when fed to animals, increase the digestibility of the diet, through action on target feed materials;
(b)gut flora stabilisers: micro-organisms or other chemically defined substances, which, when fed to animals, have a positive effect on gut flora; or
(c)substances which favourably affect the environment.
Regulations made in respect of this matter—
(a)shall be made jointly with the Secretary of State where they contain measures relating to—
(i)the placing on the market or use of plant protection products, or
(ii)maximum levels for pesticide residues in or on cereals, food stuffs of animal origin or products of plant origin, including fruit and vegetables, and
(b)may, where they relate to—
(i)payments or entitlement to payments in respect of an agricultural activity, or
(ii)the entitlement to market the products of any such activity
apply in respect of such activity undertaken anywhere on a farm or group of farms which includes a parcel of land situated in Wales.