540 FIELD CROPS 



be found useful in making a study of weeds and their seeds, particularly 

 No. 428, "Testing Farm Seeds in the Home and in the Rural School." 

 3. If small vials or cases can be provided, each pupil might make a 

 collection of the seeds of the most common weeds of the vicinity. This 

 will be of much value in identifying weed seeds in the seeds of field 

 crops. 



SUPPLEMENTARY READING 



Farmers' Bulletins: 



28. Weeds and How to Kill Them. 

 86. Thirty Poisonous Plants. 



188. Weeds Used in Medicine. 



194. Alfalfa Seed. 



260. Seed of Red Clover and Its Impurities. 



279. A Method of Eradicating Johnson Grass* 



368. The Eradication of Bindweed or Wild Morning Glory. 



382. The Adulteration of Forage-Plant Seeds. 



428. Testing Farm Seeds in the Home and in the Rural School. 



464. The Eradication of Quack Grass. 



Bailey's Cyclopedia of American Agriculture, Vol. II, pp. 110-118. 

 Clark's Farm Weeds of Canada. 

 Long's Common Weeds of the Farm. 

 Pammel's Weeds of the Farm and Garden. 

 Shaw's Weeds and How to Eradicate Them. 



