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The Bulletin 



cotton; for two years in Field E 696.9 pounds; and for one year in 

 Field C 780 pounds, or an annual average increase per acre for the 

 seven years in the three fields of 717.7 pounds, vt^orth $28.09 over the 

 cost of fertilizer. 



Lime L (Plats 142, 44 ^^^^ 72 )_ Lime was applied at the rate of 500 

 pounds of rock or 1,000 pounds slaked lime per acre every fourth year. 

 On the plat in Field A during two years there was a profit of 50 cents 

 per acre from the use of lime alone ; on the plat in Field B in two years' 

 experiments a loss of $2.54 annually per acre; and on the plat in Field 



Fig. IX. Cotton in 1906 on Plat 6 (NK) of Field A at the Iredell Farm. 



C in a one year's test a profit of $7.02, or an average for the seven 

 years of a net profit of 59 cents annually per acre. 



Complete Fertilizer with Lime, N P K L (Plats 152, 64 and 92). 

 Where lime was used in combination with the three fertilizer constitu- 

 ents there was less cotton produced on all the plats in all three of the 

 fields than where the three fertilizer constituents were used without lime, 

 showing a net loss in the use of lime in combination with a complete 

 fertilizer for the production of cotton on this soil. 



Taking the experiments as a whole, the average results show that 

 nitrogen alone on this soil for the production of cotton was used at a 

 loss ; 



Potash alone gave a small profit ; nitrogen and potash combined gave 

 less by practically one-half than potash alone ; 



Lime alone had very little efl^ect on the yield ; 



Phosphoric acid alone gave a large increase in yield and profit 



