36G 



STATE BOARD OP AGRICULTURE. 



Figure 13. — 250 pounds of a 2-12-2 increased the yield of wheat 1G.7 bushels per acre. 



Guthrie's Farm, Mendon. 



W. J. 



14.83 bushels of wheat per acre or a return of |21.16 when the cost of 

 the materials is deducted. On an adjacent plot acid phosphate, sodium 

 nitrate and muriate of potash (100 pounds per acre) were applied. They 

 increased the yield of wheat 16.18 bushels over an adjacent untreated 

 part of the field. The profits amounted to |15.0G. 



Acid phosphate was applied at the rate of 250 pounds per acre to a 

 silt loam on a tight subsoil belonging to W. J. Guthrie near Mendon. 

 The increase in wheat due to the fertilizer amounted to 16.21 bushels 

 per acre. The value of the increase amounted to $28.42 after the cost 

 of the phosphate was deducted. A 2-12-2 fertilizer was applied to an 

 adjacent plot at the rate of 250 pounds per acre and resulted in an 

 increase of 16.73 bushels of wheat per acre which gave a return of |28.39 

 above the cost of the material. 



An application of 200 pounds per acre of acid phosphate on the farm 

 of S. Simpson near Vicksburg, whose soil is a silt loam on a tight sub- 

 soil, gave an increase in yield of 9.96 bushels of wheat, the profit amount- 

 ing to $16.72 per acre. 



