214 Weeds. 



sowing, or in purchasing the same for 

 seed. 



4. Autumn cultivation. Plough the 

 land immediately after harvest when pos- 

 sible, to prevent the further maturing of 

 the seeds. 



5. Harrowing cereal crops. Draw a light 

 harrow possessed of many short teeth 

 over the cereal crops when the plants of 

 the wild buckwheat have appeared numer- 

 ously above the surface of the ground. 

 When the work is judiciously done it will 

 be found very effective in relation to the 

 labor expended. 



(5) CORN COCKLE. 



The corn cockle (Agrosteniina githago), 

 also called purple cockle or pink-flowered 

 cockle, is a common annual weed in wheat 

 fields. It does not commonly occur else- 

 where, though it may grow in other grain. 

 In the winter wheat district it is a winter 

 annual. 



The plant grows from one to three feet 

 high, usually with few branches ; the leaves 

 are long and narrow, and the whole plant 

 is thickly covered with silky hairs. The 

 conspicuous purple or pinkish-purple flow- 



