"Micronutrients" means the following plant food elements which are essential for the normal growth of plants and which are required by plants in relatively small amounts:

1. (a) Boron;
2. (b) Chlorine;
3. (c) Cobalt;
4. (d) Copper;
5. (e) Iron;
6. (f) Manganese;
7. (g) Molybdenum;
8. (h) Sodium; and
9. (i) Zinc.

Source. #7218, eff 3-29-00, EXPIRED: 3-29-08 New. #10464, eff 11-26-13 (from Agr 1101.02), EXPIRED: 11-26-23 New. #13947, INTERIM, eff 4-30-24, EXPIRED: 10-27-24 New. #14128, eff 11-26-24, EXPIRES: 11-26-34