18 



THE REPORT OF THE 



No. 19 



White Rose-scale. 



This insect has taken to our Raspberry plantations and seems to be widely spread. In 

 fields situated east of Grimsby, it was found in good form both a< the beginning and end of 

 April. On the 10th of May it was rapidly increasing in size and by the 20th nearing matur- 

 ity, but down to this date no eggs had been observed. On May 3lst eggs were plentiful and 

 on June 7th were found to be hatching ; on the 23rd June eggs were still plentiful, hatching 

 and larvpe fixing on the old canes ; at this date the scales were present in all stages of develop- 

 ment. These fields were not seen again till September 22nd when eggs were more plentiful 

 than at any previous examination, lice running and fixing on both old and new wood and there 

 were growing scales in all stages particularly on the o d canes. The same conditions prevailed 

 on the 25th of October except that the new canes were then heavily infested. 



It appears from these investigations that while this scale resembles scurfy barklouse in 

 appearance it differs from it in baing multibrooded and in passing the winter alive. I intend 

 making a careful search for eggs at the end of the season to determine whether or not there 

 are eggs in good condition at that time, as the opinion is held thpt some of the eggs winter over. 

 On September 22nd there were very few scales on the young wood in comparison with the 

 old and not many of these were of advanced growth. If the old canes be removed and des- 

 troyed immediately after fruiting much of the spreading will be prevented as it is no doubt 

 later in the season, when larvas are more plentiful, that most spreading occurs. This precaution 

 followed by a thorough treatment before growth starts in the spring with a suitable wash such 

 as soap, crude oil or lime and sulphur will in my judgment meet the difficulty. 



San Jose Scale (Figs. 4 and 5). 



Owing to the cold late spring the larvfe of the San Jcse scale did not appear till a week or 

 ten days after the usual time, but notwithstanding this and the unfavorable weather which 



iLh San Jose scale. 



-Portion of a branch infested with the 

 San Jose scale. 



followed, reproduction was rapid and the pest was discovered in many orchards where it had' 

 not previously been found. In many instances trees that were but slightly infested in the 

 spring are encrusted now and likely to be ruined before the end of the season. 



