19. 



Talkie l^k ^ Summary of fertilizer tests at the Fredoni^ laboratory 



and other Chautauqua County vineyards 







■'TIKEOBD LABORATOPY, FREDONIA., 



1109-1930 











« 

 1 



' • J 





, Value of : 



Chance 







[ Plant 



fo.od TOT acre; 



: Grape 



; Increase over: 



increase : 

 over ferti-: 



occur- 

 ences 





Soil 











type 



:Nitro-* 



;Phos- : 





: yie Ids: 



check yield : 



, llzer cost : 



' in 100 







: gen 



:phoric; 



iPotash: 



1' "pe r : 





at 19 2 P : 



: trial£r 









; acid : 





; acre : 





: prices l/: 



: 2/ 







: pounds 



: Pounds 



:PoundB" 



: Tons : 



: Tons: 



Percent: 



Dollars : 



> ' Number 







;3/ 5r- ' 



: 42 : 



: 96 : 



: 3.23 : 



; 1,04: 



47 



; - 3 ' 



iLess than 



1 



Dunkirk 



: 56 : 



. 42 : 



: 96 ' 



: 3.51 ' 



: 1.32' 



: 60 



: f 3 



n Tt 



?♦ 



gravelly : 



:" 56 : 



. 42 ; 



: 



: 3.18 : 



» . t^ &> < 



45 



: 4- 2 



tT tt 



tt 



loam ^/ ' 



:' 56 : 



: : 



: 96 



: 3.46 : 



; 1.27; 



58 



: f 5 • 



1 ft t» 



»f 





: 



: 42 , 



: 96 



: 2.7.6 : 



■ .57' 



: 26 " 



: ^f 3 

 > 



. ff ?♦ 



ft 





^ • 



> • 



MTI^ER YITTEVARD , DUTEPriRK, 1910-1913 









;S/ 56 : 



: , 42 : 



: 96 ' 



; 1.89 : 



: .08; 



: 4 : 



; -24 ; 



; 83 





Dunkirk , ; 



1 56 ■ 



; 42 . 



96 



: 1.70 : 



.^.11 



: -6 : 



: -28 



: 54 





clay : 



; 56 , 



: 42 



; : 



1.90 : 



: .09 ■ 



: 5 



: -18 



: 74 





loam 5_/ : 



56 



: ;; 



; 96 



: 2.06 . 



: .48; 



: 26 



: -14 



; 14 







; 



42 : 



96 



: 1.74 ' 



: .10 



: 6 , 



; - 7 • 



: 15 









BAR]: 



lES TIJmYP^D, PROSPECT STATIC?!, 1910-1913 





Dunkirk 



;3/ 56 ; 



. 42 ' • 



: ■ 96 



. 1.65 - 



; .33: 25 



: -19 



: 15 





shale loam 



56 ; 



42 : 



; 96 ; 



1.41 : 



.06: 4 . 



; -25 



; 65 







; 56 ; 



42 : 



96 : 



. 1/78 : 



. .24: 16 



: -21 



; 25 





Upland vine- : 



5/ ; 



' 42 : 



96 : 



. 1.55 : 



: .23: 17 



: - 4 



: 40 





yard ^/ : 



3/ : 



42 : 



96 : 



1.31 : 



; -,05: - 4 : 



: -11 



: 60 







,3/ : 



- : 42 : 



96 : 



' 1.77 : 



.23: 15 " 



; - 4 



: 15 • 





1/ I'ertilizer' applications ?;ere charged as follo77?i' Sodiimi nitrate, 100 pounds 

 1*2. 94; dried blood, 400 pounds '^a3. 49 ; aci d phosphate , 500 pounds, $2,79; 

 sulphate of potash, 200 pounds, ^^5.70. Tor cost of application, ^1 per acre ras 

 added, G-rapes '^'^ere valued on the vine at $22 per ton. 



2/ Number of times cut of 100 that an increase in yield as great as indicated 

 would occur from chance alone. This measure of thu significance of the differ- 

 ence wn yields is taken from R. A. Fisher, Statistical Methods for Research 

 Workers:, Edition 3, table 4, p." 139. Values of '*t'' are calculated from the 



difference in yield each year according' to the formula t = x >y vJ v^here 



n 



X is the mean difference in yield between the fertilised and the check plats, 



n' is the number of years recorded, and s is the standard deviation of the 



differences between the- fertilized and check plats » 



3^/ Lime ras applied every third year' at the rate of 2,000 pounds per acre. No 



charge Fas m.ade for lime. 



V IData reported in table 10. 



5^/ Hedrick, U. P. and Gladvin, P. E. A Test of Commercial Fertilizers for 



grapes^ Ner York Agricultural Experiment Station, Bull. No. 381. Geneva, 1914. 



