FERTILIZERS FOR GRAPES 99 



draw their own conclusions. An account of the experiment 

 and the results for the first five years follows : l 



Tests at Fredonia. 



"In the vineyard at Fredonia eleven plats were laid out in a 

 section of the vineyard where inequalities of soil and other con- 

 ditions were slight or were neutralized. Each plat included 

 three rows (about one-sixth of an acre) and was separated 

 from the adjoining plats by a 'buffer' row not under test. 

 One plat in the center of the section served as a check, and five 

 different fertilizer combinations were used on duplicate plats 

 at either side of the check. Plats 1 and 7 received lime and a 

 complete fertilizer with quick-acting and slow-acting nitrogen ; 

 Plats 2 and 8 received the complete fertilizer but no lime ; on 

 Plats 3 and 9 potash was omitted from the complete fertilizer 

 combination; Plats 4 and 10 received no phosphorus; Plats 

 5 and 11, no nitrogen ; and Plat 6 was the check. The materials 

 were applied at such rates that they provided for the first year 

 72 pounds of nitrogen per acre, 25 pounds of phosphorus and 

 59 pounds of potassium; and for each of the last four years 

 two-thirds as much nitrogen and phosphorus and eight-ninths 

 as much potassium. The lime was applied the first and fourth 

 years in quantity to make a ton to the acre annually. Cover- 

 crops were sown on all plats alike and were plowed under in 

 late April or early May of each year. These differed in suc- 

 cessive years, but included no legumes. The crops used were 

 rye, wheat, barley and cowhorn turnips separately and the 

 last two in combination. 



"The cultivation differed only in thoroughness from that 

 generally used in the Belt, the aim being to maintain a good 

 dust mulch during the whole growing season. Pruning by 

 the Chautauqua System was done throughout by one man, 

 who pruned solely according to the vigor of the individual 

 1 Quoted from Bui. No. 381, N. Y. Agr. Exp. Sta. 



