REPORT OF THE HORTICULTURIST. 

 SESSIONAL PAPER No. 16 



121 



The results obtained in this experiment were very convincing. It was clearly 

 proven that it was not necessary to add anything to the mixture for the purpose of 

 making it stick better to the tree, as the loosening of the scales by the lime must have 

 occurred within the first two weeks after the mixture was applied, as the wash was 

 cracking off badly within ten days after the trees received the second application. It 

 was also clearly- shown by this experiment that two sprayings were quite sufficient 

 to give satisfactory results. 



EXPEEIMENT MADE IN MAECH, 1900. 



The experiment tried in the autumn of 1899 had afforded much proof that it was 

 the caustic property of the lime which had been the means of loosening the scales and 

 that there need not be many applications to get the results desired. From this evidence 

 experiments were planned for the purpose of determining, if possible, the minimum 

 strength of lime necessary to obtain satisfactory results and also to get further proof 

 regarding the number of sprayings which it was necessary to make. Up to that period 

 the time of the year at which it was best to do this work had not been given serious 

 attention, as it was thought that any time when the trees were dormant would do. 



The following table gives the various formulte used, the dates of application and 

 the results obtained. The sprayings were made during the month of March. 



EXPERIMENT MADE IN MARCH, 1900. 



The results obtained from the experiments tried in March, 1900, are rather con- 

 flicting. One accurate conclusion, however, may be drawn, namely, that autumn, 

 and not late winter or spring, is the best time to spray the trees for this purpose. 



