27 



ed the yield of nuts by 279 pounds per acre, and its 

 average increase was 271 pounds of dry nuts per acre. 



The average increase resulting from the use of 200 

 pounds of kainit per acre was 115 pounds of dry nuts 

 per acre. 



1915. 



In 1915 the largest increase, 560 pounds of dry nuts, 

 was again made by Plot 4, fertilized with acid phos- 

 phate, kainit and slacked lime. The profit on this 

 plot this year was $15.46 per acre. Lime was separately 

 responsible for 272 pounds of dry nuts per acre, or a 

 profit of $7.88. 



This year acid phosphate afforded an average in- 

 crease of 208 pounds of dry nuts per acre. The use of 

 200 pounds of kainit afforded an average increase of 80 

 pounds of dry nuts. 



Thus the results of each of the three years agree in 

 showing that the most profitable investment was that 

 in lime; the next most profitable was the investment in 

 acid phosphate; while the 200 pounds of kainit in- 

 creased the yield to a less extent, but to a point that 

 was profitable on the basis of prices for potash pre- 

 vailing before the European war. 



However, we should not expect such favorable re- 

 sults from lime, except when applied, as in all these 

 experiments, in combination with the other fertilizers, 

 notably acid phosphate. 



Separate Effect of Cotton Seed Meal, Acid Phosphate, 



Kainit and Slaked Lime in Increasing the Yield of 



Dry Nats Per Acre at Opp, Covington Connty. 



