Com Growers' Association. 



355 



FINANCIAL STATEMENT. 



Soil treatment. 



Net 

 return. 



Cowpeas, phosphorus , 



Cowpeas, potassium , 



Phosphorus, potassium 



Cowpeas, phosphorus, potassium , 



Cowpeas, phosphorus, potassium, lime 



1.05 

 2.13 

 2.32 

 1.72 

 4.58 



BASIS OF CALCULATIONS. 



Wheat— 70 cents per bushel. Cowpeas, $2.00 per A. 



Lime— 2,000 pounds per acre, applied once in 8 years— 50 cents per annum. 

 Phosphorus— 100 pounds bone applied. Cost $1.40 per 100 pounds. 

 Potassium— 50 pounds potassium chloride applied. Cost $2.50 per 100 pounds. 



It will be seen that, as the analysis of this soil would indicate, 

 it is in need of all three of the elements, nitrogen, phosphorus and 

 potassium, while lime is also needed as a corrective of acidity. 

 The largest increases have come, therefore, where all fertilizer ele- 

 ments were added. 



It will be noticed that on corn in 1906 the use of phosphorus 

 and potassium has brought the largest increase for any two ele- 

 ments although this increase has been exceeded both by the com- 

 plete treatment, including lime, and by the use of fertilizer in the 

 hill. When financial return is considered, it will be seen that the 

 fertilizer in the hill easily leads with a net return of $4.20 per 

 acre, with the combination of phosphorus and potassium second 

 and the complete treatment third. The rest of the treatments were 

 unprofitable this season. 



In 1907 it will be- observed that while the actual yields of 

 corn are less, the increase from the treatment is much greater, the 

 yield having been more than doubled on three of the treated plots, 

 thus indicating the same thing that has been observed on other 

 fields, that the longer the experiments are continued, the better 

 will be the returns. 



The net return is also seen to be much greater in 1907, all the 

 treatments having paid well, excepting the nitrogen and phos- 

 phorus, which showed a loss, and the nitrogen and potassium, which 

 showed a gain of only $1.51 per acre. 



The results with wheat are on the whole very much the same 

 as those for corn, showing the largest returns from the phos- 

 phorus, potassium, from the nitrogen, phosphorus and potassium, 



