K"e\v York Agricultural Experimeis^t Station. 329 



a good growth, considering the weakened condition they were in 

 in the spring omng to previous serious attacks of the disease. 



In all tests a check row was left for comparison. In Series I 

 there was one row of each treatment and one check row set aside 

 for the purpose of clipping off the mildewed tips as they appeared. 

 The object was to determine whether or not it would pay to do 

 this extra labor in a commercial plantation. It was necessary 

 to drop this part of the experiment because no mildew appeared 

 on the tips. A fair crop of fruit was marketed green the latter 

 part of Jime. 



RESULTS. 



Table III shows th-e percentages of mildew from the various 

 tests. Series IV is the part which received winter treatment. 



Table III. — Percentage of Mildewed Fruit in Geneva Experiment. 



Fungicides. 



cS S =i 



•^ I 







•£ 5f.2 ft 



03 



Soda Bordeaux — 1 to 10 formula. . . . 



Ammoniacal solution of copper car- 

 bonate 



Strong ammoniacal solution of cop- 

 per carbonate plus sodium-carbonate. 



Potassium sulphide, 1 oz. to 2 gals, 

 water 



Checks 



Copper sulphate, 1 oz. to 1 gal 



Iron sulphate, saturated solution, plus 

 1 per cent, sulphuric acid 



Soda Bordeaux — 1 to 5 formula .... 



Ammoniacal solution of copper car- 

 bonate, 1 oz. to 5 gals, water 



Ammoniacal solution of copper car- 

 bonate, 1 pound to 25 pals, water, 

 plus sodium carbonate, ^2 pound... 



Potassium sulphide, 1 oz. to 1 gal. 

 water 



Copper sulphate, 1 oz. to 1 gal. — check 

 row with winter treatment only... 



Check 



1.3 

 2.3 

 1.3 

 3.5 



7.8 



t> — — 

 ft ft 

 Waft 



- OS 



"Z. <- '^ 

 M 3 a 



Si t£o o 



^ .9 fe 'Z! 



2.2 



3.2 



1.8 



3. 



5.9 





a a- 



So 

 = ^ s ^ 



gO_g 

 ftfthC 



1.4 



2. 

 2.9 

 9.3 

 16.5 



