As regards any strip which is the subject of an agreement–

1. 1

   The farmer shall not apply insecticides except between 31st August in any year and the following 1st January.

2. 2

   The farmer shall not apply herbicides to the strip other than–

   1. a

      Tri–allate, diclofop–methyl, difenzoquat, flamprop–M–isopropylbenzoyl propethyl or fenoxapropethyl;

   2. b

      Glyphosate, provided that it is applied in the pre-harvest period by spot treatment and solely for the control of couch, black bent or onion couch;

   3. c

      Fluroxypyr, provided it is applied by spot treatment and solely for the control of cleavers; or

   4. d

      any other herbicide applied by any method which the Minister may from time to time approve for this purpose.

3. 3

   The farmer may cultivate and apply herbicides to that part of the strip which adjoins a field boundary where it is desirable so to do in order to maintain a sterile area.