Where it appears to the Government that any disease, pest, parasite or weed in any area is injurious to plants, or is likely to contaminate water supply or is obstructive to waterways, and that it is necessary to take measures to eradicate such disease, pest, parasite or weed, or to prevent its introduction, spread or re-appearance, the Government may, by notification in the Gazette, declare any area to be an affected area for such period as may be specified in the notification, and with reference to such area also—
(a) declare that such disease, pest, parasite or weed is a plant disease, pest, parasite or noxious weed;
(b) prohibit or restrict the movement or removal of any plant, soil or manure from one place to another;
(c) prohibit the plantation or growing of any plant which is likely to be injurious to other plants; and
(d) direct that such other preventive or remedial measures as 4[the local authority] may consider necessary shall be carried out to eradicate, destroy or prevent the introduction, spread or re-appearance of any plant disease, pest, parasite or noxious weed.