22 



The Bulletin. 



Table I— 

 AVERAGE RESULTS FOR SEVEN 



Number 



of 



Plat. 



7-92.122 



(4+11) 

 (5=+ 142) -8 



8-102-6 



Fertilizer Application per Acre. 



.< 9. 



<S. 



^ 



CP< G-So ^S*^ 

 3::iH 3o9, 3-2t, 

 0-; aj Ojso, O O oj 



Yield of Seed 



Cotton in 



Pounds per 



Acre. 



1200 pounds 14% acid phosphate= P= 



j 50 pounds 20% manure salt= K= 



Unfertilized^ 0= 



77 pounds 13% blood= N= 



200 pounds 14% acid phosphate= P^ 



^ 50 pounds 20% manure salt= K= 



28 



1903. 



1904. 



10 



10 



28 . 



10 



FIVE YEARS' 



182-5^-82 



142.44.72 



lo2-6«-92 



(4+11) 

 (52+ 142) -8 



8-102-6 



Unf ertilized= 0= 



500 pounds unslaked lime every fourth year^L= 



f 77 pounds 13% blood= N= 



200 pounds 14% acid phosphate= P=j 



50 pounds 20% manure salt= K^ 



^500 pounds unslaked lime every fourth year^L= 



Unfertilized^ 0=: 



' 77 pounds 13% blood= N= 



200 pounds 14% acid phosphate= P- 



50 pounds 20% manure salt= K 



10 



28 



10 



10 



28 



10 



^^_ TjOSS 



Note —Checks for plats 5, 6, 7 and 8, Field A. and plats 62, 72, 8-, 92 and 102, Field B, have 

 been obtained from plats 4 and 11 and 52 and 142 respectively. It has been assumed that 



EFFECT OF NITROGEN, PHOSPHORIC ACID, POTASH AND LIME 

 ALONE AND IN COMBINATION WITH EACH OTHER ON COTTON 

 YIELDS. 



The experiments, the results of which are presented in Table 1, 

 were planned to determine the effect on yield of cotton of nitrogen 

 (N), phosphoric acid (P) and potash (K) when applied singly; 

 when two of the constituents were applied together, as nitrogen and 

 phosphoric acid (Is P), nitrogen and potash (N K), and phosphoric 



