56 LABORATORY MANUAL IN FIELD CROPS 



PRACTICUM NO. 43 

 Object. A Study of Cotton. 

 Materials. Comb, tape measure, matured cotton. 



Method. Study according to the following outline. (Field 

 work.) 



Planting : , 



distance apart of the rows ft . in. 



distance apart of the plants ft in., 



average of ten. 



Ground : level or ridged, weedy or clean, compact or mellow. 



Plants : tall or short, wide, medium or narrow, tap-rooted or 



shallow-rooted, internodes long or short, average length 



inches. 



From what point do the fruiting branches grow ? 



Leaves : lobed or entire, pedicelled or sessile, opposite or 

 alternate, stipulate or not stipulate. 



Bolls : average length of ten ; circumference of 



ten ; long or short ; large or small ; pointing up- 

 ward or downward. 



Carpels : heavy or thin, rolled or not rolled, blunt-pointed or 

 , sharp-pointed, average number. 



Lint : White, amber, or brown, ripe or unripe, abundant, 

 medium, or thin, clean or dirty, adherence strong, medium, or 

 weak. 



Length of lint : inches. 



Comparative strength : weak, medium, strong. 



Seed : large or small, fuzzy or smooth ; if fuzzy, white or 

 green ; if smooth, black or brown. 



Hilum : at the large or small end of seed, comb out the lint. 

 Is the longest at the small end or at the large end of the seed ? 



