COTTON COMPOSITION 



271 



Seed 



Lint 



Roots , . 



Stems 



Leaves 



Burs 



Seed and lint combined 



Pounds Dbt Matteb 



PER ACBE 



580 

 300 

 190 

 631 

 571 

 344 



Pee Cent of Totad 

 Weight of Dby Plant 



21.77 

 11.35 

 7.03 

 23.80 

 21.58 

 14.55 

 33.12 



246. Amounts of nitrogen, phosphoric acid, and potash 

 in the different parts of the cotton plant. — The following 

 table shows that to produce a crop of 300 pounds of dry 

 lint and the other parts associated with this amount of 

 fiber there was required about 42 pounds of nitrogen, 13 

 pounds of phosphoric acid, and 35 pounds of potash. The 

 figures are reached by averaging the analyses made by Ross 

 and McBryde, and are here given merely for reference : — 



Amounts of Fertilizer Constituents required to produce a Crop of 

 300 Pounds of Lint 



247. Uses. — Cotton is used to a greater extent than 

 any other vegetable fiber for clothing. Wool is the only 



