LABORATORY MANUAL IN FIELD CROPS 17 



PRACTICUM NO. 13 

 Object. The Study of Young Wheat Plants in the Field. 



Material. To be worked in the field on half matured 

 plants. It is advised that as many varieties as possible, com- 

 mon to the community, be used for this study, in order that the 

 student may become familiar with the variety characteristics of 

 the young plants. 



Method. Tabulate the description of the different varieties. 



1 . Color : light green, dark green, yellowish green, light 

 gray green, medium gray, dark gray green. 



2. Length of leaf blade, average of 10 blades. 



3. Width of blades, average of 10 blades at the widest 

 place. 



4. Leaf blade : erect, ascending, drooping. 



5. Leaf blade : smooth, rough, downy. 



6. Leaf blade : veins prominent, veins not prominent. 



7. Leaf blade : end tapering, end parallel with the sides. 



8. Leaf sheath : green, green shading, purple. 



9. Ligule : white, purple. 



10. Ligule : 2^ mm. long, 2 mm. long, 3 mm. long. 



11. Auricles: white, green, purple tips, purple. 



12. Auricles : hairy, partly hairy, smooth. 



13. How many culms in each crown? (average of ten). 



14. How many crowns in each square yard ? 



15. Do you consider this a good or poor stand ? 



