The term "agricultural seeds" shall mean, in addition to those defined as such in Iowa Code subsection 199.1(2), all such seeds listed in 7 C.F.R., Section 201.2(h), revised as of January 1, 1982, with the following exceptions:
Alfilaria-Erodium cicutarium (L).
Bluegrass, annual-Poa annua L.
Chess, soft-Bromus mollis L.
Johnson grass-Sorghum halepense (L).
Mustard-Brassica juncea (L).
Mustard-black-Brassica nigra.
Rape, bird-Brassica campestris L.
Rape, tumip-Brassica campestris vars.
Sorghum almum-Sorghum almum.
Iowa Admin. Code r. 21-40.1