598 Beport of the Department of Horticulture of the 



wet. Much seepage water from the hills above rises to the surfacj 

 over it. The west part is worse in this respect than the east portion. 

 The vines, while they have been planted 7 or 8 years, have the appear- 

 ance of vines set only 3 or 4. During an extremely dry season 

 fair wood growth is made but in a wet one it is very limited, with 

 a correspondingly short crop. This vineyard has not been sprayed 

 during the time the experiment has run. The plats consist of 

 two rows, each of which runs in a north and south direction. Each 

 row contains 44 vines. Thus each plat comprises about .14 of an 

 acre. The stable manure and lime, clover and lime and the barley- 

 turnips and lime plats were limed a year previous to the beginning 

 of the test. No commercial fertilizers nor stable manure had been 

 applied for two or three years previous to 1910. Table XVI gives 

 the order in which the plats occur in the vineyard with the yields 

 in tons per acre for each year and the four-year average. 



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



Hamilton Vineyard 



Calculated to tons per acre. 





Treatment. 



4-year 

 average. 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 

 14 



Check _ 



Phosphorus and potassium. . . . 



Nitrogen and potassium 



Check 



Nitrogen and phosphorus 



Complete fertilizer 



Complete fertilizer; lime 



Stable manure 



Wheat and cowhorn turnips. . . 



Mammoth clover 



Check 



Wheat and cowhorn turnips; 



lime 



Mammoth clover; lime 



Stable manure; lime 



Tons 

 1 

 2 

 1 

 1 

 1 

 1 



59 

 10 



87 

 60 

 46 

 76 



1.47 



.43 

 ,57 

 ,06 

 .23 



1.20 

 1.26 



1.47 



Consideration of the data discloses nothing that would indicate 

 any material gain for the season of 1910. In 1911, however, two 

 plats, one the nitrogen-potassium and the other the phosphorus- 



