New York Agricultural Experiment Station. 579 



Cottonseed meal at the rate of 800 pounds per acre. 

 Acid phosphate at the rate of 300 pounds per acre. 



Plats 4 an d 10. 

 Nitrate of soda at the rate of 100 pounds per acre. 

 Cottonseed meal at the rate of 800 pounds per acre. 

 Sulphate of potash at the rate of 200 pounds per acre. 



Plats 5 and 11. 

 Sulphate of potash at the rate of 200 pounds per acre. 

 Acid phosphate at the rate of 300 pounds per acre. 



Plat 6. 

 Unfertilized. 



After the first year dried blood was substituted for the cotton- 

 seed meal owing to the difficulty in obtaining the meal. The amount 

 of dried blood used in 1910 was at the rate of 560 pounds per acre; 

 but in the last three years this was reduced to 400 pounds per acre. 

 The difference was made necessary because of the variability of 

 the nitrogen content of the blood in 1910 and the three years 

 following. 



The lime applications have been made at three-year intervals. 

 Thus far two applications have been made, one of air-slaked lime 

 and the other an equivalent amount of ground limestone. 



The fertilizers were purchased in the open market at prevailing 

 prices and were " home mixed." Table III gives the prices paid 

 for the materials. 



Table III. — Price per Ton of Commerical Fertilizers Used in Grape 



Fertilizer Experiments. 



The lime was broadcasted and harrowed in after spring plowing. 

 In 1909 the cottonseed meal and nitrate of soda were mixed with 

 the other materials, broadcasted and plowed under; but in the 



