4 The Bullethst. 



upon the problems involved in stimulating increased yields and more 

 intelligent utilization, as well as inducing further work along those 

 lines which are especially promising and important: 



ENTIRE PLANT. 



Proportion of Parts.- — In giving the composition of the entire 

 plant, it should be remembered that season, soil, seed, fertilization, 

 cultivation, etc., are each potent factors influencing, within compara- 

 tively^ narrow limits, the proportion of the different parts of a nor- 

 mal mature plant; yet, as an average of a large number of weigh- 



Table I— composition OF DIFFERENT PARTS OF THE COTTON PLANT AND THE 

 AND LINT ON THE BASIS OF YIELD OF CULPEPPER'S IMPROVED 



B 

 'z. "> 



^'^ 



O—' 



•2 ^ 



1 



5 

 9 



13 



17 



2 



6 



10 



14 



18 



3 



7 



15 

 19 

 4 

 8 

 12 

 16 



Part of Plant. 



Cotton leaves- 

 Cotton leaves- 

 Cotton leaves- 

 Cotton leaves - 



Cotton leaves- 



Fertilizer Application per Acre.' 



i 150.3 pounds acid phosphate - 

 < 157.8 pounds kainit - 



( 141.2 pounds cotton-seed meal- 

 Nothing 



( 100.9 pounds acid phosphate 



13.0 pounds kainit - 

 423.6 pounds cotton-seed meal- 



150.3 pounds acid phosphate — 



52.6 pounds kainit 



141.2 pounds cotton-seed meal- 



450.9 pounds acid phosphate--- 

 52.6 pounds kainit 



141.2 pounds cotton-seed meal ■ 



Whole cotton seed- 



Whole cotton seed- 



Whole cotton seed- 



Whole cotton seed- 



Whole cotton seed" 



Cotton stems, roots, bolls, limbs, etc. 

 Cotton stems, roots, bolls, limbs, etc. 



11 Cotton stems, roots, bolls, limbs, etc. 



Cotton stems, roots, bolls, limbs, etc. 

 Cotton stems, roots, bolls, limbs, etc. 



Cotton lint^ 



Cotton lint'' 



Cotton lint^ 



Cotton lint' 



20 Cotton lint* 



Same as No. 1 — 



Nothing 



Same as No. 9-- 

 Same as No. 13- 

 Same as No.l7- 

 Same as No. 1— 



Nothing 



Same as No. 9— 

 Same as No. 13- 

 Same as No. 17- 

 Same as No. 1 — 



Nothing 



Same as No. 9— 

 Same as No. 13- 

 Same as No. 17- 



u . 

 41 O 



Percentage 



NPK3 1 



O 

 NaPKi 



NPK 



NPsK 



NPK3 



O 

 NsPK 

 NPK 



NP:jK 



NPK3 

 O 

 iP 

 PI 

 ?i. 

 PI 



o 

 p: 



NPK 

 NPsK 



Mois- 

 ture. 



Ash. 



9.36 I 13.52 

 8.91 16.63 

 8.56 17.61 



8.01 



9.31 



7.11 

 7.51 

 6.48 

 7.01 

 7.40 

 7.85 

 7.17 

 7.48 

 8.56 

 9.08 

 4.81 

 4.30 

 4.39 

 5.02 

 5.37 



15.19 



3.63 

 4.58 

 4.15 

 4.31 

 3.95 

 4.66 

 7.20 

 4.56 

 4.41 

 5.11 

 1.88 

 1.25 

 1.67 

 1.54 

 1.47 



'Normal (NPK) application in these experiments is equivalent to 400 pounds of a fertilizing mixture, ana- 

 lyzing 7 per cent available phosphoric acid, 2' j per cent nitrogen, and 2V2 per cent potash. 

 -All determinations were made in duplicate, but only averages are given below. 



