814 WEED FLORA OF IOWA 



for violation of the provisions of section ten (10) of this act if 

 he is able to show that the weed seeds named in section ten (10) 

 are present in quantities not more than one in ten thousand, and 

 that due diligence has been used to find and remove said seeds. 



Section 19. There is hereby appropriated, for the purpose of 

 enforcing the provisions of this act, a sum not exceeding three 

 thousand dollars ($3,000) annually. Such expense shall be paid 

 by warrant of the state auditor upon bills filed by the state food 

 and dairy commissioner with the executive council and approved 

 by them. All fees collected under the provisions of this act shall 

 be paid into the state treasury. 



The Michigan law permits the sale of cereal grasses, clover, and 

 forage plants containing two per cent of quack grass, charlock, 

 black mustard, Canada thistles, chicory, toad flax, buckhorn, 

 Rugel's plantain, night-flowering catchfly, and pennycress. The 

 adulteration shall not be more than five per cent of any other 

 distinguishable seed, sand, crushed rock or any other materials to 

 be found mixed with agricultural seed. When found to be wilfully 

 adulterated or not as clean as it is commercially practicable to 

 make it, the results should be published in a bulletin together with 

 names of the persons selling the same. 



The Canadian act requires that no person shall sell or offer for 

 sale, seed, cereals, grasses, clovers or forage plants unless they 

 are free from any seeds of wild mustard, hare's-ear mustard, bull 

 mustard, field pennycress, wild oats, bindweed, perennial sow 

 thistle, ragweed, greater ragweed, purple cockle, cow cockle, orange 

 hawkweed, and ergot. This law has done much to stimulate the 

 sale of good seed. 



The enforcement of the Wisconsin law is placed in the hands of 

 the Agricultural Experiment Station. 



The Maine law requiring a guaranty of seed sold in that state 

 is working out well and has greatly improved the quality of seed 

 sold in that state. 



The North Dakota law has the following forbidden weed seeds: 

 couch or quack grass, Canada thistle, sow thistle, and dodder. 

 Also the sale of agricultural or garden seeds containing more than 

 a reasonable trace of the seeds of greater ragweed, cornflower, 

 marsh elder, Russian pigweed, dandelion, chicory, Russian thistle, 

 plantain, buck plantain, bracted plantain, white cockle, cow cockle, 

 curled dock, sorrel, sheep-sorrel, purslane, bindweed, wild buck- 

 wheat, wild onion, wild oats, pigeon grass, holy grass, chess, mus- 



