310 Eeport of THE! Horticulturist of the 



Lysol and formalin were each used in three strengths, 1 oz. to 1 

 gal. of water, 1 oz. to 2 gals, and 1 oz. to 4 gals. These strengths 

 were settled upon arbitrarily for trial since there were no pre- 

 vious experiments which might be followed as a guide. 



The foliage was not injured by any of the solutions. 



Method of Application. 



The first spraying was given with a knapsack sprayer, but this 

 was inconvenient, especially where so many different solutions 

 were used and the sprayer had to be washed out after each solu- 

 tion was applied. After the first application a bucket pump 

 made by the Deming Co., Salem, Ohio, was tried and gave good 

 satisfaction. With a seven-foot hose all parts of the plant could 

 be readily reached. 



Division of Series and Dates of Spraying. 

 The table opposite shows upon which rows the different 

 strengths of fungicides were applied and gives the dates of appli- 

 cation. The division into series is shown in the diagram opposite 

 page 309. 



RESULTS. 



Development of Mildew. 



The plantation was closely watched for the first appearance of 

 mildew and at the fifth spraying, May 26, a little was found on 

 the fruit, especially on the untreated rows. On the ti'eated rows 

 there was a very slight difference in favor of the potassium sul- 

 phide treatments. All of the bushes had made a good, healthy 

 growth and nearly all were loaded with fruit. At this time the 

 berries were so large that potassium sulphide, 1 oz. to 2 gals, of 

 water, was substituted for all Bordeaux mixture treatments so 

 as to avoid having spotted fruits at the marketing season. 



At the time of the sixth spraying, June 7, the entire plantation 

 was examined to find out which treatments seemed to be most 

 effective. During the few days previous to this date the disease 

 ajppeared on the young leaves; and in the amount of mildew on 

 the foliage there seemed to be no difference between the treated 

 and untreated bushes. The fruit on the untreated bushes was 



