24 



In determining the increase over the unfertilized plots, 

 the yield of the fertilized plots, Nos. 4, 5, 6 and 7, is com- 

 j:»ared with both unfertilized plots, h'ing on either side, giv- 

 ing to each unfertilized plot a weight inversely proportional 

 «to its distance from the plot under comparison. This 

 method of comparison tends to compensate for variations, 

 ju the fertility of the several plots. 



Price Assumed For Seed Cotton. 

 The price assumed is 8 cents per pound for lint and |12.09 

 per ton for seed. Deduct from this the cost of picking and 

 ginning, i/o cent per pound of seed cotton, and we have 2/<^ 

 <-ents as the net value per pound of increase of seed cotton ; 

 this last figure is used in all calculations of profits in this 

 T)ulletin. 



Huntsville experiments with cotton. 



1 



-- \ 



-) ■ 



I 



' I 

 ^ - \ 



no 



\ 



FERTILIZER. 



HUNTS- 



VILI.K 



(.Davis^ 



1901 



HUNTS- 



VILLK 



; Wales) 

 1902 



Hunts- 

 ville 



( Wales) 

 1903 



Hunts- 



VILLS 

 (Wales) 

 1904 



KIND. 



u 



<v a 



<t-) Q, 

 O 



ID 



o 



••^ a 

 > -o 



O <S 

 N 



^ .<^ 



u 



tj_| Ot 



CO 



o 





o 



0) C4 





§ t^ ^ '= S ;. L- i£ £ >: 8 c a 



in 



o 



01 



ft) — < 



CO ■!-> 



200 Cotton seed meal 

 240 Acid phosphate 



00 No fertilizer .. 



^OOjvainit 



200 Cotton seed meal 

 240 Acid phosphate 

 200 Cotton seed meal 



200 Kainit 



240 Acid phosphate 

 200 Kainit 



QQ No fertilizer . . . 

 200^°^^°'^ seed meal 

 240 Acid phosphate 



20o!Kainif 



20Q Cotton seed meal 

 24o[Acid phosphate 

 100 Kainit 



\Lds. 

 , I 332 

 ,' 524 



' 428 



,: 512 



' 592 



J 420 



I 616 

 • 452 



792 



li 



880 



Lds. 

 216 



288 



192 

 320 



280 



192 



304 

 250 



Lds 

 416 

 472 

 352 

 344 



872 

 704 



520 



Lds. 

 64 



12a 



—5 

 526 



362 



131 



696 36« 



^8 



352 



