(a) Breeder seed for the production of foundation seed shall be planted on land on which no alfalfa was grown or planted during the four years prior to the one in which the present stand was planted. The land must be free from volunteer plants as determined by field inspection during the season in which the seeding is established. As an additional precaution, no manure or other contaminating amendments shall be applied during the establishment and productive period of the stand.

(b) Foundation seed for the production of registered seed shall be planted on land on which no alfalfa was grown or planted during the three years prior to the one in which the present stand was planted. The land must be free from volunteer plants as determined by field inspection during the season in which the seeding is established. As an additional precaution, no manure or other contaminating amendments shall be applied during the establishment and productive period of the stand.

(c) Registered seed for the production of certified seed shall be planted on land on which no alfalfa was grown or planted during the year prior to the one in which the present stand was planted. The land must be free from volunteer plants as determined by field inspection during the season in which the seeding is established. As an additional precaution, no manure or other contaminating amendments shall be applied during the establishment and productive period of the stand.