812 



WEED FLORA OF IOWA 



under the name of clover, June clover, red clover, (Trifolium 

 pratense), mammoth red clover, medium red clover, small red 

 clover, sapling clover, peavine clover (T. pratense var.). or alfalfa 

 (Medicago sativa) seed. 



Section 15. The provisions concerning agricultural seeds con- 

 tained in this act shall not apply to : 



First. Any person or persons growing or selling seeds for food 

 purposes only, or having such seeds in possession for sale for such 

 purposes. 



Second. Any person or persons growing or selling seeds direct 

 to merchants to be cleaned or graded before being offered for sale 

 for the purpose of seeding. This shall not, however, exempt the 

 seller from the restrictions of section ten (10) of this act. 



Third. Seed that is held in storage for the purpose of being re- 

 cleaned, and which has not been offered, exposed or held in pos- 

 session of or for sale for the purpose of seeding. 



Fourth. Seed marked "not absolutely clean," and held or sold 

 for export outside the state only. 



Fifth. The sale of seed that is grown, sold and delivered by 

 any farmer on his own premises for seeding by the purchaser him- 

 self, unless the purchaser of said seeds obtains from the seller at 

 the time of the sale thereof a certificate that the said seed is sup- 

 plied to the purchaser subject to the provisions of this act. 



Sixth. Mixtures of seeds for lawn or pasture purposes. This 

 shall not, however, exempt the seller of such mixtures of seeds 

 from the restrictions of sections ten (10) and eleven (11) of this 

 act. 



Section 16. The following standards of purity (meaning free- 

 dom from weed seeds or other seeds) and viability are hereby 

 fixed: 



STANDARD OF PURITY AND VIABILITY OF AGRICULTURAL SEEDS. 



Name of Seed 



Per cent of 

 purity 



Per cent oi 



germinable 



seeds 



Alfalfa (Medicago sativa) 



Barley 



Blue grass, Canadian (Poa compressa) . 

 Blue grass, Kentucky (Poa pratensis) . . . 



Brome, awnless (Bromus inermis) 



Clover, alsike (Trifolium hybridum) . . . 



Buckwheat 



Clover, crimson (Trifolium incarnatum) 

 Clover, red (Trifolium pratense) 



80 

 90 

 45 

 45 

 75 

 75 

 90 

 85 

 80 



