LABORATORY MANUAL IN FIELD CROPS 27 



16. Diameter of the rachis, average of five. 



17. Depth of furrow below the branches : furrowed, medium, 

 smooth. 



18. Wall of culm : thick, medium, thin. 



19. Panicle : open, partly open, closed. 



20. Flowering glume : beardless, partly bearded, bearded. 



REFERENCES 



Livingston's Field Crop Production, pp. 144-150. 



Lyon and Montgomery's Examining and Grading Grain, pp. 51-55. 



