Xew York Agricultural Experiment Station. 597 



Table XV. — Yield of Grapes on Plats Differently Fertilized in 



Grandin Vineyard. 

 Calculated to tons per acre. 



Table XV gives the yields in tons per acre for each plat during 

 the four years that the test has run, with the four-year average. 

 A study of the table shows that for the years 1910 and 1911 none 

 of the treatments have brought about yields greater than the unfertil- 

 ized check. In 1912, however, the increased returns from the 

 stable manure plats, 12 and 13, returned a profit over the check 

 plat, 10. Further than this no consistent increase can be noted. 

 No gains are apparent from the use of commercial fertilizers in 

 1913. There is evidently a gain from the use of clover as a green 

 manure and again the use of stable manure has proved profitable. 

 Lime used in conjunction with the clover and the stable manure 

 has contributed profitably to greater yields. The apparent gain 

 from its use in Plat 7 as compared with Plat 8 is offset when we 

 compare the yields of the two in 1912 and note how the 1913 yield 

 has been influenced by each. Plat 8 which produced .40 of a ton 

 more than Plat 7 in 1912 yielded .34 of a ton less in 1913. 



HAMILTON VINEYARD. 



The Hamilton vineyard, located at State Line and consisting of 

 two acres, is situated on Dunkirk clay loam. This vineyard is 



