318 



STATE BOARD OF AGRICULTURE. 



PLAT VIII. 



Fungicide used. 



Sodium Benzoate Bordeaux Formula (2) 



l-l-i-60 



l-l-*-50 



l-l-i-50 



l-l-i-50 



1-1-+-50 



4-2-50 Bordeaux 



Stage of growth. 



Shoots about 8 inches long. 

 Shoots 18-20 inches long. 

 Just after blossoming. 

 Grapes the size of peas. 

 Grapes about three-fourths grown. 

 Grapes nearly lull grown. 



PL.A.T IX. 



Fungicide used. 



Sodium Benzoate Bordeaux Formula (1) 



2-1-1-50 



2-1-1-50 



2-1-1-50 



2-1-1-50 



2-1-1-50 



4r-2-50 Bordeaux 



Stage of growth. 



Shoots about 8 inches long. 

 Shoots 16-20 inches long. 

 Just after blossoming. 

 Grapes the size of peas. 

 Grapes about three-fourths grown. 

 Grapes nearly full grown. 



The results are shown in the following table : 



No. of 

 plat. 



I... 



II. . 



III. 



IV.. 



V... 



VI.. 



VII. 



VIII 



IX.. 



No. of ap- 

 plication. 



6 

 6 

 6 

 None 

 6 

 6 

 6 

 6 

 6 



Fungicides used. 



Percentage 



of rot 

 by count. 



I 



4-4-50 Bordeaux 1st 5 applications 



4-.3-50 Bordeaux 1st 5 applications 



4—2-50 Bordeaux 



Check unsprayed 



5-5-50 Bordeaux 1st 5 applications 



5-4-50 Bordeaux 1st 5 applications 



5-3-50 Bordeaux 1st 5 applications 



Sodium Benzoate Bordeaux l-l-i-50 formula (2) 

 Sodium Benzoate Bordeaux 2-1-1-50 formula (1) 



0.0,3 



0.097 



0.042 



7.36 



0.051 



0.07 



. 064 



. 083 



0.127 



4-2-50 Bordeaux was used in 6th spraying on all plats. 



The percentages of rot given were obtained by actual count of the 

 rotten grapes on clusters showing average condition of each plat as in 

 the other cases. It will be noted that the smallest percentage of rot 

 was found on Plat I treated Avith 4-4-50 Bordeaux mixture. The differ- 

 ence in amount of rot, however, on the various plats was so slight in 

 most cases as to give no very decided indication as to the comparative 

 value of the different mixtures. The amount of rot on the check plat 

 was also small, 



MR, GIDDING's VINEYARD. 



This vineyard consisted of Concord vines about 14 years old. Eleven 

 plats of one-third acre each were used in the experiments. Tiie work 

 was done with a geared traction sprayer, using fixed nozzles for the 

 first three applications, and trailers with the nozzles directed by hand, 

 for the last three applications. 



The following tables show the treatment given each plat : 



