Conclusion: The pure seed was % of the sample. 



The losses from impurities were as follows : 



Wheat % weeds and dirt, or Ib. per bu. 



Oats % weeds and dirt, or..... Ib. per bu. 



Rye % weeds and dirt, or Ib. per bu. 



Barley % weeds and dirt, or. Ib. per bu. 



EXERCISE No. 15 

 DRAWINGS OF THE OAT HEAD 



Object: To become familiar with 

 the head of the oat plant. 



Material: Heads of 

 the oat plant. 



Method : Make a 

 detail study of the oat 

 head in laboratory. 



(a) Make a drawing to 

 show panicle, awn, rachis, 

 whorl, and spikelet. 



(b) Draw an oat spikelet showing 

 the outer glumes, outer hulls, awn, and 

 undeveloped flower. 



(c) What is the difference between 

 an oat grain and an oat kernel? 



OAT 

 SPIKELET 



OAT HEAD 



34 



